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/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:38:07,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:38:07,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:38:07,843 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:38:07,844 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:38:07,845 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:38:07,847 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:38:07,849 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:38:07,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:38:07,854 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:38:07,856 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:38:07,857 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:38:07,858 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:38:07,858 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:38:07,860 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:38:07,860 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:38:07,861 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:38:07,863 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:38:07,865 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:38:07,866 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:38:07,867 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:38:07,869 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:38:07,871 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:38:07,878 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:38:07,879 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:38:07,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:38:07,880 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:38:07,881 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 03:38:07,904 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:38:07,904 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:38:07,905 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:38:07,905 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:38:07,905 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:38:07,906 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:38:07,906 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:38:07,906 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:38:07,906 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:38:07,906 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:38:07,907 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:38:07,907 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:38:07,908 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:38:07,908 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:38:07,909 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:38:07,909 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:38:07,909 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:38:07,909 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:38:07,909 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:38:07,909 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:38:07,911 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:38:07,911 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:38:07,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:38:07,912 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:38:07,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:38:07,912 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:38:07,912 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:38:07,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:38:07,913 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:38:07,913 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:38:07,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:38:07,913 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:38:07,914 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:38:07,914 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:38:07,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:38:07,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:38:08,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:38:08,003 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:38:08,003 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:38:08,004 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-07 03:38:08,070 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8d10c5dd/b833204de1d8411f9775d32b1b0e65d8/FLAG94a6e9b36 [2018-11-07 03:38:08,761 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:38:08,762 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-07 03:38:08,787 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8d10c5dd/b833204de1d8411f9775d32b1b0e65d8/FLAG94a6e9b36 [2018-11-07 03:38:08,802 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8d10c5dd/b833204de1d8411f9775d32b1b0e65d8 [2018-11-07 03:38:08,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:38:08,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:38:08,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:38:08,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:38:08,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:38:08,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:38:08" (1/1) ... [2018-11-07 03:38:08,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c37f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:08, skipping insertion in model container [2018-11-07 03:38:08,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:38:08" (1/1) ... [2018-11-07 03:38:08,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:38:08,918 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:38:09,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:38:09,754 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:38:10,117 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:38:10,137 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:38:10,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10 WrapperNode [2018-11-07 03:38:10,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:38:10,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:38:10,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:38:10,139 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:38:10,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:38:10,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:38:10,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:38:10,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:38:10,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (1/1) ... [2018-11-07 03:38:10,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:38:10,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:38:10,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:38:10,548 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:38:10,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (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 03:38:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:38:10,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:38:10,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:38:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:38:10,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:38:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:38:10,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:38:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:38:10,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:38:10,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:38:10,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:38:17,409 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:38:17,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:38:17 BoogieIcfgContainer [2018-11-07 03:38:17,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:38:17,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:38:17,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:38:17,415 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:38:17,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:38:08" (1/3) ... [2018-11-07 03:38:17,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acff73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:38:17, skipping insertion in model container [2018-11-07 03:38:17,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:38:10" (2/3) ... [2018-11-07 03:38:17,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acff73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:38:17, skipping insertion in model container [2018-11-07 03:38:17,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:38:17" (3/3) ... [2018-11-07 03:38:17,419 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-11-07 03:38:17,429 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:38:17,438 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:38:17,456 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:38:17,497 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:38:17,497 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:38:17,497 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:38:17,498 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:38:17,498 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:38:17,498 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:38:17,498 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:38:17,498 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:38:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:38:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 03:38:17,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:38:17,543 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:38:17,546 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:38:17,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash -224629815, now seen corresponding path program 1 times [2018-11-07 03:38:17,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:38:17,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:17,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:38:17,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:17,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:38:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:38:18,064 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 03:38:18,090 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 03:38:18,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:38:18,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:38:18,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:38:18,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:38:18,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:38:18,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:38:18,119 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:38:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:38:24,798 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 03:38:24,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:38:24,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-11-07 03:38:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:38:24,831 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 03:38:24,831 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 03:38:24,848 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:38:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 03:38:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 03:38:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 03:38:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 03:38:24,978 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 59 [2018-11-07 03:38:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:38:24,979 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 03:38:24,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:38:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 03:38:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 03:38:24,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:38:24,988 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 03:38:24,988 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:38:24,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:24,989 INFO L82 PathProgramCache]: Analyzing trace with hash 311881044, now seen corresponding path program 1 times [2018-11-07 03:38:24,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:38:24,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:24,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:38:24,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:24,991 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:38:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:38:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:38:25,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:38:25,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:38:25,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:38:25,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:38:25,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:38:25,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:38:25,407 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 03:38:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:38:30,570 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 03:38:30,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:38:30,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 03:38:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:38:30,582 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 03:38:30,582 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 03:38:30,587 INFO L604 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 [2018-11-07 03:38:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 03:38:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 03:38:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 03:38:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 03:38:30,639 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 132 [2018-11-07 03:38:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:38:30,640 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 03:38:30,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:38:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 03:38:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 03:38:30,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:38:30,644 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:30,644 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:38:30,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash 827365732, now seen corresponding path program 1 times [2018-11-07 03:38:30,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:38:30,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:30,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:38:30,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:30,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:38:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:38:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:38:30,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:38:30,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:38:30,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:38:30,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:38:30,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:38:30,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:38:30,949 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 03:38:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:38:36,669 INFO L93 Difference]: Finished difference Result 5402 states and 8304 transitions. [2018-11-07 03:38:36,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:38:36,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-11-07 03:38:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:38:36,709 INFO L225 Difference]: With dead ends: 5402 [2018-11-07 03:38:36,709 INFO L226 Difference]: Without dead ends: 3951 [2018-11-07 03:38:36,724 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:38:36,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2018-11-07 03:38:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3948. [2018-11-07 03:38:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3948 states. [2018-11-07 03:38:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5455 transitions. [2018-11-07 03:38:36,853 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5455 transitions. Word has length 140 [2018-11-07 03:38:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:38:36,854 INFO L480 AbstractCegarLoop]: Abstraction has 3948 states and 5455 transitions. [2018-11-07 03:38:36,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:38:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5455 transitions. [2018-11-07 03:38:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 03:38:36,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:38:36,859 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:36,860 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:38:36,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1388399790, now seen corresponding path program 1 times [2018-11-07 03:38:36,860 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:38:36,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:36,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:38:36,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:36,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:38:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:38:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:38:37,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:38:37,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:38:37,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:38:37,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:38:37,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:38:37,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:38:37,110 INFO L87 Difference]: Start difference. First operand 3948 states and 5455 transitions. Second operand 6 states. [2018-11-07 03:38:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:38:41,138 INFO L93 Difference]: Finished difference Result 9145 states and 12423 transitions. [2018-11-07 03:38:41,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:38:41,140 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 03:38:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:38:41,169 INFO L225 Difference]: With dead ends: 9145 [2018-11-07 03:38:41,169 INFO L226 Difference]: Without dead ends: 5203 [2018-11-07 03:38:41,193 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 03:38:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2018-11-07 03:38:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5145. [2018-11-07 03:38:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5145 states. [2018-11-07 03:38:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 6605 transitions. [2018-11-07 03:38:41,358 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 6605 transitions. Word has length 146 [2018-11-07 03:38:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:38:41,358 INFO L480 AbstractCegarLoop]: Abstraction has 5145 states and 6605 transitions. [2018-11-07 03:38:41,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:38:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 6605 transitions. [2018-11-07 03:38:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 03:38:41,362 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:38:41,363 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:38:41,363 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:38:41,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash 389844774, now seen corresponding path program 1 times [2018-11-07 03:38:41,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:38:41,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:41,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:38:41,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:38:41,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:38:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:38:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:38:42,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:38:42,107 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:38:42,108 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-07 03:38:42,111 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:38:42,198 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:38:42,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:38:44,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:38:44,740 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:38:44,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:38:44,755 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:38:46,273 INFO L227 lantSequenceWeakener]: Weakened 166 states. On average, predicates are now at 78.48% of their original sizes. [2018-11-07 03:38:46,273 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:38:46,810 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-07 03:38:46,811 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:38:46,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:38:46,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 03:38:46,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:38:46,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:38:46,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:38:46,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:38:46,813 INFO L87 Difference]: Start difference. First operand 5145 states and 6605 transitions. Second operand 8 states. [2018-11-07 03:38:50,178 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:40:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:19,999 INFO L93 Difference]: Finished difference Result 10594 states and 13568 transitions. [2018-11-07 03:40:19,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:40:19,999 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2018-11-07 03:40:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:20,023 INFO L225 Difference]: With dead ends: 10594 [2018-11-07 03:40:20,023 INFO L226 Difference]: Without dead ends: 5455 [2018-11-07 03:40:20,036 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:40:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2018-11-07 03:40:20,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5453. [2018-11-07 03:40:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2018-11-07 03:40:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 6922 transitions. [2018-11-07 03:40:20,174 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 6922 transitions. Word has length 171 [2018-11-07 03:40:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:20,174 INFO L480 AbstractCegarLoop]: Abstraction has 5453 states and 6922 transitions. [2018-11-07 03:40:20,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:40:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 6922 transitions. [2018-11-07 03:40:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 03:40:20,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:20,180 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:40:20,180 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:20,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:20,181 INFO L82 PathProgramCache]: Analyzing trace with hash -34095748, now seen corresponding path program 1 times [2018-11-07 03:40:20,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:20,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:20,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:20,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:20,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:21,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:40:21,602 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:40:21,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 03:40:21,603 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:40:21,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:40:21,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:40:22,696 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:40:30,488 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:40:30,489 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:40:30,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:30,498 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:40:33,630 INFO L227 lantSequenceWeakener]: Weakened 34 states. On average, predicates are now at 80.21% of their original sizes. [2018-11-07 03:40:33,631 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 03:42:01,594 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:42:01,599 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:42:01,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:42:01 BoogieIcfgContainer [2018-11-07 03:42:01,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:42:01,600 INFO L168 Benchmark]: Toolchain (without parser) took 232785.69 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 1.9 GB in the end (delta: -501.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:42:01,601 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. [2018-11-07 03:42:01,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1321.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:42:01,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 223.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:42:01,604 INFO L168 Benchmark]: Boogie Preprocessor took 184.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:42:01,605 INFO L168 Benchmark]: RCFGBuilder took 6862.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.6 MB). Peak memory consumption was 297.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:42:01,606 INFO L168 Benchmark]: TraceAbstraction took 224187.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 6.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 03:42:01,611 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 1321.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 223.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -914.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6862.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 297.6 MB). Peak memory consumption was 297.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224187.97 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 6.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was analyzing trace of length 268 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 224.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 115.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1473 SDtfs, 4993 SDslu, 1353 SDs, 0 SdLazy, 9818 SolverSat, 1977 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5453occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953712937109427 AbsIntWeakeningRatio, 0.10550458715596331 AbsIntAvgWeakeningVarsNumRemoved, 431.10091743119267 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 442 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 643 ConstructedInterpolants, 0 QuantifiedInterpolants, 314565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 156/208 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown