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/Problem14_label43_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:32:54,927 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:32:54,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:32:54,944 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:32:54,944 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:32:54,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:32:54,947 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:32:54,949 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:32:54,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:32:54,953 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:32:54,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:32:54,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:32:54,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:32:54,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:32:54,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:32:54,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:32:54,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:32:54,966 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:32:54,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:32:54,969 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:32:54,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:32:54,972 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:32:54,977 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:32:54,979 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:32:54,979 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:32:54,980 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:32:54,984 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:32:54,985 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:32:54,985 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:32:54,989 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:32:54,989 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:32:54,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 18:32:54,994 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 18:32:55,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:32:55,015 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:32:55,016 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:32:55,016 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:32:55,016 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:32:55,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:32:55,017 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:32:55,017 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:32:55,017 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:32:55,017 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:32:55,017 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:32:55,017 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:32:55,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:32:55,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:32:55,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:32:55,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:32:55,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:32:55,019 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:32:55,019 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:32:55,020 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:32:55,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:32:55,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:32:55,020 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:32:55,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:32:55,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:32:55,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:32:55,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:32:55,021 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:32:55,021 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:32:55,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:32:55,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:32:55,022 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:32:55,022 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:32:55,022 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:32:55,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:32:55,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:32:55,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:32:55,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:32:55,115 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:32:55,116 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43_false-unreach-call_false-termination.c [2018-10-24 18:32:55,181 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c46ee5ed3/2d9a2ea3a85948e38053d2a4c2964fac/FLAG799618e29 [2018-10-24 18:32:55,809 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:32:55,810 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label43_false-unreach-call_false-termination.c [2018-10-24 18:32:55,829 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c46ee5ed3/2d9a2ea3a85948e38053d2a4c2964fac/FLAG799618e29 [2018-10-24 18:32:55,859 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c46ee5ed3/2d9a2ea3a85948e38053d2a4c2964fac [2018-10-24 18:32:55,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:32:55,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:32:55,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:55,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:32:55,875 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:32:55,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:55" (1/1) ... [2018-10-24 18:32:55,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:55, skipping insertion in model container [2018-10-24 18:32:55,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:55" (1/1) ... [2018-10-24 18:32:55,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:32:55,957 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:32:56,540 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:56,547 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:32:56,760 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:56,781 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:32:56,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56 WrapperNode [2018-10-24 18:32:56,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:56,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:32:56,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:32:56,783 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:32:56,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:56,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:32:57,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:32:57,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:32:57,028 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:32:57,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (1/1) ... [2018-10-24 18:32:57,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:32:57,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:32:57,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:32:57,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:32:57,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (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 18:32:57,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:32:57,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:32:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:32:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:32:57,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:32:57,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:32:57,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:32:57,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:33:00,894 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:33:00,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:00 BoogieIcfgContainer [2018-10-24 18:33:00,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:33:00,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:33:00,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:33:00,900 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:33:00,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:32:55" (1/3) ... [2018-10-24 18:33:00,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:00, skipping insertion in model container [2018-10-24 18:33:00,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:56" (2/3) ... [2018-10-24 18:33:00,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:00, skipping insertion in model container [2018-10-24 18:33:00,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:00" (3/3) ... [2018-10-24 18:33:00,905 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label43_false-unreach-call_false-termination.c [2018-10-24 18:33:00,916 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:33:00,929 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:33:00,946 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:33:00,988 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:33:00,989 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:33:00,989 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:33:00,989 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:33:00,990 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:33:00,990 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:33:00,990 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:33:00,990 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:33:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:33:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 18:33:01,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:01,029 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] [2018-10-24 18:33:01,032 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:01,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:01,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1620735268, now seen corresponding path program 1 times [2018-10-24 18:33:01,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:01,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:01,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:01,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:01,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:01,487 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:33:01,600 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 18:33:01,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:01,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:33:01,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:01,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:33:01,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:33:01,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:01,627 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:33:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:03,691 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:33:03,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:33:03,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-24 18:33:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:03,715 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:33:03,715 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:33:03,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:33:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:33:03,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:33:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:33:03,814 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 22 [2018-10-24 18:33:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:03,814 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:33:03,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:33:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:33:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 18:33:03,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:03,822 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:33:03,822 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:03,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:03,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1438641935, now seen corresponding path program 1 times [2018-10-24 18:33:03,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:03,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:03,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:03,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:03,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:04,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:04,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:33:04,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:04,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:33:04,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:33:04,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:33:04,203 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:33:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:06,387 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 18:33:06,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:06,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-24 18:33:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:06,396 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 18:33:06,397 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 18:33:06,400 INFO L605 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 [2018-10-24 18:33:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 18:33:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 18:33:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 18:33:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 18:33:06,442 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 109 [2018-10-24 18:33:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:06,442 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 18:33:06,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:33:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 18:33:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 18:33:06,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:06,446 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:33:06,446 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:06,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:06,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1680025772, now seen corresponding path program 1 times [2018-10-24 18:33:06,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:06,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:06,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:06,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:06,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:06,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:06,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:33:06,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:06,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:33:06,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:33:06,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:33:06,726 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 18:33:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:10,706 INFO L93 Difference]: Finished difference Result 2350 states and 4002 transitions. [2018-10-24 18:33:10,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:33:10,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-24 18:33:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:10,730 INFO L225 Difference]: With dead ends: 2350 [2018-10-24 18:33:10,730 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 18:33:10,739 INFO L605 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 [2018-10-24 18:33:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 18:33:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 18:33:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 18:33:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2678 transitions. [2018-10-24 18:33:10,824 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2678 transitions. Word has length 118 [2018-10-24 18:33:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:10,828 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2678 transitions. [2018-10-24 18:33:10,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:33:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2678 transitions. [2018-10-24 18:33:10,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-24 18:33:10,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:10,849 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:10,849 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:10,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:10,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1765816872, now seen corresponding path program 1 times [2018-10-24 18:33:10,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:10,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:10,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:10,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:10,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:11,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:11,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:11,909 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-24 18:33:11,911 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:11,982 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:11,983 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:13,926 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:18,270 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:18,272 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:33:18,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:18,316 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:21,073 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-24 18:33:21,074 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:33:21,392 INFO L413 sIntCurrentIteration]: We have 221 unified AI predicates [2018-10-24 18:33:21,392 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:33:21,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:33:21,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 18:33:21,393 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:21,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:33:21,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:33:21,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:33:21,396 INFO L87 Difference]: Start difference. First operand 1731 states and 2678 transitions. Second operand 7 states. [2018-10-24 18:33:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:37,264 INFO L93 Difference]: Finished difference Result 3641 states and 5641 transitions. [2018-10-24 18:33:37,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:37,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-10-24 18:33:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:37,282 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 18:33:37,282 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 18:33:37,293 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:33:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 18:33:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 18:33:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 18:33:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2869 transitions. [2018-10-24 18:33:37,365 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2869 transitions. Word has length 222 [2018-10-24 18:33:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:37,366 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2869 transitions. [2018-10-24 18:33:37,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:33:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2869 transitions. [2018-10-24 18:33:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-24 18:33:37,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:37,376 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:33:37,377 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:37,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:37,378 INFO L82 PathProgramCache]: Analyzing trace with hash -709448537, now seen corresponding path program 1 times [2018-10-24 18:33:37,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:37,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:37,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:37,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:37,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:37,890 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:33:38,286 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-24 18:33:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 133 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:33:38,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:38,589 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:38,589 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-24 18:33:38,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:38,596 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:38,597 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:42,884 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:52,505 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:52,505 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:33:52,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:52,514 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:57,174 INFO L232 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-24 18:33:57,174 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:34:17,681 INFO L413 sIntCurrentIteration]: We have 306 unified AI predicates [2018-10-24 18:34:17,681 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:34:17,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:34:17,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [12] total 31 [2018-10-24 18:34:17,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:34:17,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 18:34:17,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 18:34:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2018-10-24 18:34:17,684 INFO L87 Difference]: Start difference. First operand 1914 states and 2869 transitions. Second operand 21 states. [2018-10-24 18:36:18,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:36:18,862 INFO L93 Difference]: Finished difference Result 4559 states and 6683 transitions. [2018-10-24 18:36:18,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 18:36:18,863 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 307 [2018-10-24 18:36:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:36:18,876 INFO L225 Difference]: With dead ends: 4559 [2018-10-24 18:36:18,876 INFO L226 Difference]: Without dead ends: 1919 [2018-10-24 18:36:18,887 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 316 GetRequests, 257 SyntacticMatches, 30 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2018-10-24 18:36:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2018-10-24 18:36:18,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1914. [2018-10-24 18:36:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 18:36:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2863 transitions. [2018-10-24 18:36:18,986 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2863 transitions. Word has length 307 [2018-10-24 18:36:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:36:18,987 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2863 transitions. [2018-10-24 18:36:18,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 18:36:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2863 transitions. [2018-10-24 18:36:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-24 18:36:18,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:36:18,997 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:36:18,998 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:36:18,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:36:18,998 INFO L82 PathProgramCache]: Analyzing trace with hash 2029899283, now seen corresponding path program 1 times [2018-10-24 18:36:18,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:36:18,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:36:19,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:36:19,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:36:19,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:36:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:36:19,521 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:36:19,737 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:36:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 58 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:36:20,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:36:20,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:36:20,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-24 18:36:20,455 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:36:20,460 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:36:20,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:36:23,394 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:36:30,858 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:36:30,858 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:36:30,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:36:30,860 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:36:32,966 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 78.08% of their original sizes. [2018-10-24 18:36:32,966 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:36:38,025 INFO L413 sIntCurrentIteration]: We have 332 unified AI predicates [2018-10-24 18:36:38,025 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:36:38,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:36:38,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [15] total 33 [2018-10-24 18:36:38,026 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:36:38,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 18:36:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 18:36:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-24 18:36:38,027 INFO L87 Difference]: Start difference. First operand 1914 states and 2863 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 18:36:47,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 18:36:47,541 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:36:47,546 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:36:47,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:36:47 BoogieIcfgContainer [2018-10-24 18:36:47,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:36:47,548 INFO L168 Benchmark]: Toolchain (without parser) took 231677.64 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 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 894.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:47,549 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:36:47,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 910.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:47,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 244.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:47,551 INFO L168 Benchmark]: Boogie Preprocessor took 106.76 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. [2018-10-24 18:36:47,552 INFO L168 Benchmark]: RCFGBuilder took 3760.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.9 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:47,553 INFO L168 Benchmark]: TraceAbstraction took 226650.85 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 810.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:36:47,558 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 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 910.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 244.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.76 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 3760.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.9 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226650.85 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 810.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (40 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 226.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 154.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 791 SDtfs, 6563 SDslu, 398 SDs, 0 SdLazy, 4654 SolverSat, 1305 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 895 GetRequests, 794 SyntacticMatches, 33 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 28.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9954847227143121 AbsIntWeakeningRatio, 0.10477299185098952 AbsIntAvgWeakeningVarsNumRemoved, 601.1850989522701 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1111 NumberOfCodeBlocks, 1111 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4240970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 346/779 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown