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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:43:01,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:43:01,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:43:01,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:43:01,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:43:01,943 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:43:01,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:43:01,947 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:43:01,949 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:43:01,950 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:43:01,959 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:43:01,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:43:01,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:43:01,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:43:01,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:43:01,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:43:01,967 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:43:01,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:43:01,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:43:01,979 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:43:01,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:43:01,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:43:01,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:43:01,988 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:43:01,988 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:43:01,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:43:01,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:43:01,992 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:43:01,992 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:43:01,993 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:43:01,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:43:01,994 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 23:43:01,994 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 23:43:01,994 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 23:43:01,997 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 23:43:01,998 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 23:43:01,998 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:43:02,024 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:43:02,026 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:43:02,027 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:43:02,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:43:02,027 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:43:02,028 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:43:02,028 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:43:02,028 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:43:02,028 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:43:02,028 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:43:02,029 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:43:02,029 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:43:02,029 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:43:02,029 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:43:02,030 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:43:02,030 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:43:02,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:43:02,031 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:43:02,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:43:02,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:43:02,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:43:02,032 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:43:02,033 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:43:02,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:43:02,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:43:02,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:43:02,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:43:02,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:43:02,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:43:02,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:43:02,034 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:43:02,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:43:02,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:43:02,035 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:43:02,035 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:43:02,035 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:43:02,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:43:02,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:43:02,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:43:02,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:43:02,137 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:43:02,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label06_false-unreach-call.c [2018-10-24 23:43:02,212 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab44c4d74/826c5b4186244e14b0ba75102b467793/FLAGf1a4daa19 [2018-10-24 23:43:02,864 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:43:02,865 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label06_false-unreach-call.c [2018-10-24 23:43:02,888 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab44c4d74/826c5b4186244e14b0ba75102b467793/FLAGf1a4daa19 [2018-10-24 23:43:02,912 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ab44c4d74/826c5b4186244e14b0ba75102b467793 [2018-10-24 23:43:02,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:43:02,929 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:43:02,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:43:02,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:43:02,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:43:02,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:02" (1/1) ... [2018-10-24 23:43:02,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7904a4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:02, skipping insertion in model container [2018-10-24 23:43:02,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:43:02" (1/1) ... [2018-10-24 23:43:02,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:43:03,062 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:43:03,867 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:43:03,875 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:43:04,134 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:43:04,159 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:43:04,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04 WrapperNode [2018-10-24 23:43:04,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:43:04,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:43:04,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:43:04,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:43:04,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:43:04,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:43:04,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:43:04,495 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:43:04,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (1/1) ... [2018-10-24 23:43:04,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:43:04,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:43:04,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:43:04,656 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:43:04,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (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 23:43:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:43:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:43:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:43:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:43:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:43:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:43:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:43:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:43:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:43:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:43:10,447 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:43:10,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:10 BoogieIcfgContainer [2018-10-24 23:43:10,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:43:10,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:43:10,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:43:10,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:43:10,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:43:02" (1/3) ... [2018-10-24 23:43:10,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfc9a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:10, skipping insertion in model container [2018-10-24 23:43:10,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:43:04" (2/3) ... [2018-10-24 23:43:10,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfc9a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:43:10, skipping insertion in model container [2018-10-24 23:43:10,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:43:10" (3/3) ... [2018-10-24 23:43:10,457 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label06_false-unreach-call.c [2018-10-24 23:43:10,468 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:43:10,477 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:43:10,495 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:43:10,535 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:43:10,535 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:43:10,535 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:43:10,535 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:43:10,536 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:43:10,536 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:43:10,536 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:43:10,536 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:43:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 23:43:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-24 23:43:10,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:43:10,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:43:10,579 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:43:10,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 973214763, now seen corresponding path program 1 times [2018-10-24 23:43:10,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:43:10,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:10,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:10,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:10,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:43:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:11,011 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 23:43:11,017 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 23:43:11,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:43:11,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:43:11,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:43:11,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:43:11,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:43:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:43:11,045 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-24 23:43:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:43:17,551 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-24 23:43:17,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:43:17,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-24 23:43:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:43:17,583 INFO L225 Difference]: With dead ends: 1513 [2018-10-24 23:43:17,583 INFO L226 Difference]: Without dead ends: 1097 [2018-10-24 23:43:17,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:43:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-24 23:43:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-24 23:43:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-24 23:43:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-24 23:43:17,712 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 17 [2018-10-24 23:43:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:43:17,713 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-24 23:43:17,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:43:17,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-24 23:43:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 23:43:17,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:43:17,723 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:43:17,724 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:43:17,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:17,725 INFO L82 PathProgramCache]: Analyzing trace with hash -804123419, now seen corresponding path program 1 times [2018-10-24 23:43:17,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:43:17,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:17,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:17,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:17,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:43:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:18,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:43:18,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:43:18,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:43:18,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:43:18,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:43:18,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:43:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:43:18,048 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-24 23:43:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:43:23,014 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-24 23:43:23,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:43:23,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-10-24 23:43:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:43:23,045 INFO L225 Difference]: With dead ends: 3259 [2018-10-24 23:43:23,046 INFO L226 Difference]: Without dead ends: 2168 [2018-10-24 23:43:23,053 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 23:43:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-24 23:43:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-24 23:43:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-24 23:43:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-24 23:43:23,148 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 88 [2018-10-24 23:43:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:43:23,150 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-24 23:43:23,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:43:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-24 23:43:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 23:43:23,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:43:23,156 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:43:23,156 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:43:23,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:23,157 INFO L82 PathProgramCache]: Analyzing trace with hash -778915235, now seen corresponding path program 1 times [2018-10-24 23:43:23,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:43:23,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:23,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:23,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:23,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:43:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:43:23,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:43:23,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:43:23,448 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:43:23,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:43:23,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:43:23,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:43:23,449 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-24 23:43:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:43:30,918 INFO L93 Difference]: Finished difference Result 7047 states and 12676 transitions. [2018-10-24 23:43:30,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:43:30,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 23:43:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:43:30,960 INFO L225 Difference]: With dead ends: 7047 [2018-10-24 23:43:30,961 INFO L226 Difference]: Without dead ends: 4911 [2018-10-24 23:43:30,982 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 23:43:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2018-10-24 23:43:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4871. [2018-10-24 23:43:31,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4871 states. [2018-10-24 23:43:31,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4871 states to 4871 states and 7884 transitions. [2018-10-24 23:43:31,152 INFO L78 Accepts]: Start accepts. Automaton has 4871 states and 7884 transitions. Word has length 116 [2018-10-24 23:43:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:43:31,153 INFO L481 AbstractCegarLoop]: Abstraction has 4871 states and 7884 transitions. [2018-10-24 23:43:31,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:43:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4871 states and 7884 transitions. [2018-10-24 23:43:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 23:43:31,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:43:31,168 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:31,168 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:43:31,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2071209528, now seen corresponding path program 1 times [2018-10-24 23:43:31,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:43:31,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:31,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:31,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:31,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:43:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:31,519 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:43:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:43:31,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:43:31,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:43:31,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:43:31,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:43:31,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:43:31,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:43:31,608 INFO L87 Difference]: Start difference. First operand 4871 states and 7884 transitions. Second operand 6 states. [2018-10-24 23:43:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:43:36,209 INFO L93 Difference]: Finished difference Result 12812 states and 21358 transitions. [2018-10-24 23:43:36,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:43:36,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-24 23:43:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:43:36,254 INFO L225 Difference]: With dead ends: 12812 [2018-10-24 23:43:36,254 INFO L226 Difference]: Without dead ends: 7947 [2018-10-24 23:43:36,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:43:36,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2018-10-24 23:43:36,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 7906. [2018-10-24 23:43:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2018-10-24 23:43:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 12226 transitions. [2018-10-24 23:43:36,497 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 12226 transitions. Word has length 181 [2018-10-24 23:43:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:43:36,498 INFO L481 AbstractCegarLoop]: Abstraction has 7906 states and 12226 transitions. [2018-10-24 23:43:36,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:43:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 12226 transitions. [2018-10-24 23:43:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 23:43:36,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:43:36,504 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:36,505 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:43:36,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:36,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1111726163, now seen corresponding path program 1 times [2018-10-24 23:43:36,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:43:36,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:36,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:43:36,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:43:36,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:43:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:43:36,798 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:43:36,991 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:43:36,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:43:36,991 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:43:36,992 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-10-24 23:43:36,995 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [215], [217], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [684], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [860], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 23:43:37,047 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:43:37,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:43:37,584 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:43:37,586 INFO L272 AbstractInterpreter]: Visited 122 different actions 122 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 23:43:37,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:43:37,619 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:43:38,123 INFO L232 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 77.29% of their original sizes. [2018-10-24 23:43:38,124 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:43:38,363 INFO L413 sIntCurrentIteration]: We have 206 unified AI predicates [2018-10-24 23:43:38,364 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:43:38,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:43:38,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-24 23:43:38,365 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:43:38,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:43:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:43:38,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:43:38,367 INFO L87 Difference]: Start difference. First operand 7906 states and 12226 transitions. Second operand 6 states. [2018-10-24 23:45:04,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:45:04,259 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger: modulus not positive at java.math.BigInteger.mod(BigInteger.java:2458) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:154) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:100) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:249) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-24 23:45:04,270 INFO L168 Benchmark]: Toolchain (without parser) took 121343.30 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 23:45:04,271 INFO L168 Benchmark]: CDTParser took 0.19 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 23:45:04,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1229.25 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:45:04,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 333.59 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: -884.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 23:45:04,275 INFO L168 Benchmark]: Boogie Preprocessor took 161.11 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:45:04,276 INFO L168 Benchmark]: RCFGBuilder took 5792.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 7.1 GB. [2018-10-24 23:45:04,278 INFO L168 Benchmark]: TraceAbstraction took 113819.53 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -639.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 23:45:04,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1229.25 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 333.59 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: -884.4 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.11 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5792.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 113819.53 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -639.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger: modulus not positive: java.math.BigInteger.mod(BigInteger.java:2458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...