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_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:32:18,808 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:32:18,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:32:18,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:32:18,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:32:18,824 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:32:18,825 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:32:18,827 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:32:18,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:32:18,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:32:18,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:32:18,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:32:18,831 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:32:18,832 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:32:18,833 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:32:18,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:32:18,835 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:32:18,837 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:32:18,839 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:32:18,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:32:18,842 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:32:18,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:32:18,845 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:32:18,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:32:18,846 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:32:18,847 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:32:18,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:32:18,848 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:32:18,849 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:32:18,850 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:32:18,851 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:32:18,851 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:32:18,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:32:18,852 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:32:18,853 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:32:18,853 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:32:18,854 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 14:32:18,870 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:32:18,871 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:32:18,872 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:32:18,872 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:32:18,872 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:32:18,872 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:32:18,872 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:32:18,873 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:32:18,873 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:32:18,873 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:32:18,873 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:32:18,873 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:32:18,874 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:32:18,874 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:32:18,875 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:32:18,875 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:32:18,875 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:32:18,875 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:32:18,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:32:18,876 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:32:18,876 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:32:18,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:32:18,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:32:18,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:32:18,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:32:18,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:32:18,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:32:18,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:32:18,877 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:32:18,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:32:18,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:32:18,878 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:32:18,878 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:32:18,878 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:32:18,925 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:32:18,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:32:18,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:32:18,942 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:32:18,943 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:32:18,943 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label38_true-unreach-call.c [2018-11-07 14:32:19,001 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b3e8443/908a1bb06c7741018ac53ded141f2b88/FLAGf4fca5424 [2018-11-07 14:32:19,666 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:32:19,667 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label38_true-unreach-call.c [2018-11-07 14:32:19,699 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b3e8443/908a1bb06c7741018ac53ded141f2b88/FLAGf4fca5424 [2018-11-07 14:32:19,719 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b3e8443/908a1bb06c7741018ac53ded141f2b88 [2018-11-07 14:32:19,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:32:19,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:32:19,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:32:19,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:32:19,735 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:32:19,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:32:19" (1/1) ... [2018-11-07 14:32:19,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea3de14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:19, skipping insertion in model container [2018-11-07 14:32:19,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:32:19" (1/1) ... [2018-11-07 14:32:19,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:32:19,822 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:32:20,409 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:32:20,414 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:32:20,670 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:32:20,697 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:32:20,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20 WrapperNode [2018-11-07 14:32:20,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:32:20,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:32:20,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:32:20,700 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:32:20,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:20,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:20,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:32:20,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:32:20,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:32:20,911 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:32:20,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:20,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:20,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:20,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:20,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:21,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:21,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (1/1) ... [2018-11-07 14:32:21,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:32:21,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:32:21,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:32:21,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:32:21,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (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 14:32:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:32:21,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:32:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:32:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:32:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:32:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:32:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:32:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:32:21,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:32:25,345 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:32:25,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:32:25 BoogieIcfgContainer [2018-11-07 14:32:25,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:32:25,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:32:25,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:32:25,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:32:25,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:32:19" (1/3) ... [2018-11-07 14:32:25,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f2def6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:32:25, skipping insertion in model container [2018-11-07 14:32:25,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:20" (2/3) ... [2018-11-07 14:32:25,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f2def6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:32:25, skipping insertion in model container [2018-11-07 14:32:25,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:32:25" (3/3) ... [2018-11-07 14:32:25,356 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label38_true-unreach-call.c [2018-11-07 14:32:25,365 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:32:25,375 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:32:25,391 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:32:25,438 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:32:25,438 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:32:25,439 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:32:25,439 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:32:25,439 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:32:25,439 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:32:25,439 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:32:25,440 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:32:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:32:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 14:32:25,485 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:25,486 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:25,488 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:25,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash 296004705, now seen corresponding path program 1 times [2018-11-07 14:32:25,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:25,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:25,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:25,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:25,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:26,057 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:32:26,131 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 14:32:26,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:26,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:32:26,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:26,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:32:26,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:32:26,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:32:26,162 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 14:32:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:28,527 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 14:32:28,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:32:28,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 14:32:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:28,550 INFO L225 Difference]: With dead ends: 782 [2018-11-07 14:32:28,551 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 14:32:28,560 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:32:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 14:32:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 14:32:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 14:32:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-11-07 14:32:28,651 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 67 [2018-11-07 14:32:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:28,652 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-11-07 14:32:28,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:32:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-11-07 14:32:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 14:32:28,662 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:28,663 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:32:28,663 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:28,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1433084721, now seen corresponding path program 1 times [2018-11-07 14:32:28,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:28,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:28,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:28,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:28,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:29,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:29,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:32:29,005 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:29,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:32:29,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:32:29,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:32:29,009 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-11-07 14:32:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:33,942 INFO L93 Difference]: Finished difference Result 1802 states and 3378 transitions. [2018-11-07 14:32:33,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:32:33,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-07 14:32:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:33,957 INFO L225 Difference]: With dead ends: 1802 [2018-11-07 14:32:33,957 INFO L226 Difference]: Without dead ends: 1326 [2018-11-07 14:32:33,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:32:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2018-11-07 14:32:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1284. [2018-11-07 14:32:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2018-11-07 14:32:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1948 transitions. [2018-11-07 14:32:34,059 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1948 transitions. Word has length 138 [2018-11-07 14:32:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:34,060 INFO L480 AbstractCegarLoop]: Abstraction has 1284 states and 1948 transitions. [2018-11-07 14:32:34,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:32:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1948 transitions. [2018-11-07 14:32:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 14:32:34,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:34,074 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:34,074 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:34,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:34,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1675544195, now seen corresponding path program 1 times [2018-11-07 14:32:34,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:34,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:34,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:34,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:34,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:34,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:34,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:32:34,365 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:34,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:32:34,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:32:34,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:32:34,367 INFO L87 Difference]: Start difference. First operand 1284 states and 1948 transitions. Second operand 6 states. [2018-11-07 14:32:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:38,430 INFO L93 Difference]: Finished difference Result 4497 states and 7268 transitions. [2018-11-07 14:32:38,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:32:38,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-07 14:32:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:38,457 INFO L225 Difference]: With dead ends: 4497 [2018-11-07 14:32:38,457 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 14:32:38,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:32:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 14:32:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3180. [2018-11-07 14:32:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3180 states. [2018-11-07 14:32:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 4560 transitions. [2018-11-07 14:32:38,586 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 4560 transitions. Word has length 148 [2018-11-07 14:32:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:38,587 INFO L480 AbstractCegarLoop]: Abstraction has 3180 states and 4560 transitions. [2018-11-07 14:32:38,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:32:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 4560 transitions. [2018-11-07 14:32:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 14:32:38,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:38,596 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:38,596 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:38,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:38,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1977764724, now seen corresponding path program 1 times [2018-11-07 14:32:38,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:38,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:38,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:38,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:38,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:39,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:32:39,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:32:39,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 14:32:39,205 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], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:32:39,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:32:39,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:32:39,897 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:32:40,424 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:32:40,425 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 14:32:40,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:40,471 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:32:41,733 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 73.86% of their original sizes. [2018-11-07 14:32:41,733 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:32:42,113 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 14:32:42,114 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:32:42,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:32:42,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:32:42,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:42,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:32:42,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:32:42,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:32:42,117 INFO L87 Difference]: Start difference. First operand 3180 states and 4560 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown