java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:35:38,934 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:35:38,936 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:35:38,949 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:35:38,949 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:35:38,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:35:38,952 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:35:38,954 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:35:38,955 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:35:38,956 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:35:38,957 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:35:38,957 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:35:38,958 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:35:38,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:35:38,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:35:38,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:35:38,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:35:38,964 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:35:38,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:35:38,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:35:38,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:35:38,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:35:38,978 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:35:38,978 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:35:38,978 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:35:38,980 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:35:38,981 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:35:38,982 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:35:38,982 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:35:38,987 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:35:38,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:35:38,989 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:35:38,989 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:35:38,989 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:35:38,990 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:35:38,992 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:35:38,992 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:35:39,022 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:35:39,022 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:35:39,028 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:35:39,028 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:35:39,029 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:35:39,029 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:35:39,029 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:35:39,029 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:35:39,029 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:35:39,030 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:35:39,030 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:35:39,030 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:35:39,031 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:35:39,031 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:35:39,031 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:35:39,031 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:35:39,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:35:39,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:35:39,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:35:39,032 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:35:39,032 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:35:39,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:35:39,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:35:39,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:35:39,033 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:35:39,033 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:35:39,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:35:39,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:35:39,034 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:35:39,034 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:35:39,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:35:39,035 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:35:39,035 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:35:39,035 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:35:39,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:35:39,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:35:39,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:35:39,125 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:35:39,126 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:35:39,127 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-11-07 14:35:39,192 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a396e5627/bd56cd53fd1f49c8ac3eb2981a498b58/FLAG0c48f312b [2018-11-07 14:35:39,784 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:35:39,785 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label54_true-unreach-call.c [2018-11-07 14:35:39,806 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a396e5627/bd56cd53fd1f49c8ac3eb2981a498b58/FLAG0c48f312b [2018-11-07 14:35:39,832 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a396e5627/bd56cd53fd1f49c8ac3eb2981a498b58 [2018-11-07 14:35:39,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:35:39,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:35:39,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:35:39,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:35:39,856 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:35:39,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:35:39" (1/1) ... [2018-11-07 14:35:39,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd5ea2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:39, skipping insertion in model container [2018-11-07 14:35:39,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:35:39" (1/1) ... [2018-11-07 14:35:39,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:35:39,968 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:35:40,628 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:35:40,633 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:35:40,843 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:35:40,865 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:35:40,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40 WrapperNode [2018-11-07 14:35:40,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:35:40,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:35:40,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:35:40,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:35:40,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:40,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:35:41,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:35:41,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:35:41,041 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:35:41,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... [2018-11-07 14:35:41,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:35:41,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:35:41,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:35:41,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:35:41,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:35:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:35:41,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:35:41,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:35:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:35:41,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:35:41,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:35:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:35:41,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:35:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:35:45,363 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:35:45,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:35:45 BoogieIcfgContainer [2018-11-07 14:35:45,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:35:45,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:35:45,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:35:45,372 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:35:45,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:35:39" (1/3) ... [2018-11-07 14:35:45,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ad45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:35:45, skipping insertion in model container [2018-11-07 14:35:45,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:35:40" (2/3) ... [2018-11-07 14:35:45,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319ad45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:35:45, skipping insertion in model container [2018-11-07 14:35:45,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:35:45" (3/3) ... [2018-11-07 14:35:45,376 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label54_true-unreach-call.c [2018-11-07 14:35:45,386 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:35:45,394 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:35:45,409 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:35:45,449 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:35:45,450 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:35:45,450 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:35:45,450 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:35:45,450 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:35:45,450 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:35:45,450 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:35:45,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:35:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:35:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-07 14:35:45,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:35:45,491 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:35:45,493 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:35:45,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:35:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash -639357604, now seen corresponding path program 1 times [2018-11-07 14:35:45,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:35:45,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:35:45,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:35:45,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:35:45,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:35:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:35:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:35:45,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:35:45,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:35:45,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:35:45,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:35:46,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:35:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:35:46,011 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:35:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:35:49,234 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-11-07 14:35:49,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:35:49,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-07 14:35:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:35:49,259 INFO L225 Difference]: With dead ends: 998 [2018-11-07 14:35:49,260 INFO L226 Difference]: Without dead ends: 699 [2018-11-07 14:35:49,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:35:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-11-07 14:35:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-11-07 14:35:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-11-07 14:35:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-11-07 14:35:49,372 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 44 [2018-11-07 14:35:49,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:35:49,373 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-11-07 14:35:49,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:35:49,373 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-11-07 14:35:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 14:35:49,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:35:49,386 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:35:49,387 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:35:49,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:35:49,387 INFO L82 PathProgramCache]: Analyzing trace with hash 731087552, now seen corresponding path program 1 times [2018-11-07 14:35:49,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:35:49,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:35:49,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:35:49,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:35:49,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:35:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:35:49,911 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:35:49,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:35:49,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 14:35:49,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:35:49,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:35:49,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:35:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:35:49,915 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 7 states. [2018-11-07 14:35:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:35:55,917 INFO L93 Difference]: Finished difference Result 2549 states and 4241 transitions. [2018-11-07 14:35:55,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 14:35:55,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2018-11-07 14:35:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:35:55,931 INFO L225 Difference]: With dead ends: 2549 [2018-11-07 14:35:55,932 INFO L226 Difference]: Without dead ends: 1862 [2018-11-07 14:35:55,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 14:35:55,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2018-11-07 14:35:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1435. [2018-11-07 14:35:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2018-11-07 14:35:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2153 transitions. [2018-11-07 14:35:56,025 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2153 transitions. Word has length 118 [2018-11-07 14:35:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:35:56,026 INFO L480 AbstractCegarLoop]: Abstraction has 1435 states and 2153 transitions. [2018-11-07 14:35:56,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:35:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2153 transitions. [2018-11-07 14:35:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-07 14:35:56,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:35:56,038 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:35:56,039 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:35:56,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:35:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash 162053839, now seen corresponding path program 1 times [2018-11-07 14:35:56,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:35:56,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:35:56,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:35:56,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:35:56,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:35:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:35:56,324 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:35:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 74 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:35:56,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:35:56,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:35:56,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-11-07 14:35:56,394 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [253], [255], [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], [506], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:35:56,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:35:56,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:35:57,010 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:35:57,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:35:57,519 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:35:57,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:35:57,571 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:35:58,645 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 73.46% of their original sizes. [2018-11-07 14:35:58,645 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:35:58,988 INFO L415 sIntCurrentIteration]: We unified 190 AI predicates to 190 [2018-11-07 14:35:58,988 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:35:58,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:35:58,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:35:58,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:35:58,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:35:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:35:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:35:58,994 INFO L87 Difference]: Start difference. First operand 1435 states and 2153 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown