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/Problem10_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:14:37,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:14:37,977 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:14:37,993 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:14:37,993 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:14:37,994 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:14:37,996 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:14:37,997 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:14:37,999 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:14:38,000 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:14:38,001 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:14:38,001 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:14:38,002 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:14:38,003 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:14:38,004 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:14:38,005 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:14:38,006 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:14:38,009 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:14:38,011 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:14:38,013 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:14:38,019 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:14:38,021 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:14:38,023 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:14:38,023 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:14:38,024 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:14:38,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:14:38,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:14:38,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:14:38,027 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:14:38,028 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:14:38,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:14:38,029 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:14:38,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:14:38,030 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:14:38,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:14:38,031 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:14:38,032 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 14:14:38,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:14:38,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:14:38,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:14:38,055 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:14:38,055 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:14:38,056 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:14:38,056 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:14:38,056 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:14:38,056 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:14:38,056 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:14:38,056 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:14:38,060 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:14:38,060 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:14:38,061 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:14:38,061 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:14:38,061 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:14:38,061 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:14:38,061 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:14:38,062 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:14:38,062 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:14:38,062 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:14:38,062 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:14:38,062 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:14:38,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:14:38,064 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:14:38,064 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:14:38,064 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:14:38,064 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:14:38,065 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:14:38,065 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:14:38,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:14:38,065 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:14:38,065 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:14:38,065 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:14:38,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:14:38,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:14:38,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:14:38,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:14:38,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:14:38,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c [2018-11-07 14:14:38,199 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac743f9f/9b41a5d8b9024265a35946c4498b1ea7/FLAGd4a8d2b76 [2018-11-07 14:14:38,756 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:14:38,757 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c [2018-11-07 14:14:38,772 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac743f9f/9b41a5d8b9024265a35946c4498b1ea7/FLAGd4a8d2b76 [2018-11-07 14:14:38,796 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ac743f9f/9b41a5d8b9024265a35946c4498b1ea7 [2018-11-07 14:14:38,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:14:38,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:14:38,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:14:38,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:14:38,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:14:38,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:38" (1/1) ... [2018-11-07 14:14:38,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68185dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:38, skipping insertion in model container [2018-11-07 14:14:38,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:38" (1/1) ... [2018-11-07 14:14:38,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:14:38,902 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:14:39,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:14:39,406 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:14:39,520 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:14:39,538 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:14:39,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39 WrapperNode [2018-11-07 14:14:39,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:14:39,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:14:39,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:14:39,540 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:14:39,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:14:39,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:14:39,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:14:39,697 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:14:39,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (1/1) ... [2018-11-07 14:14:39,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:14:39,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:14:39,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:14:39,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:14:39,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (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 14:14:39,869 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:14:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:14:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:14:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:14:39,870 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:14:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:14:39,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:14:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:14:39,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:14:43,067 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:14:43,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:43 BoogieIcfgContainer [2018-11-07 14:14:43,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:14:43,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:14:43,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:14:43,077 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:14:43,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:14:38" (1/3) ... [2018-11-07 14:14:43,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bd021b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:43, skipping insertion in model container [2018-11-07 14:14:43,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:39" (2/3) ... [2018-11-07 14:14:43,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74bd021b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:43, skipping insertion in model container [2018-11-07 14:14:43,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:43" (3/3) ... [2018-11-07 14:14:43,082 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label14_true-unreach-call.c [2018-11-07 14:14:43,094 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:14:43,107 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:14:43,131 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:14:43,173 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:14:43,174 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:14:43,174 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:14:43,174 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:14:43,174 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:14:43,175 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:14:43,175 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:14:43,175 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:14:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:14:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 14:14:43,215 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:43,216 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] [2018-11-07 14:14:43,219 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:43,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:43,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1440498332, now seen corresponding path program 1 times [2018-11-07 14:14:43,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:43,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:43,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:43,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:43,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:43,618 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:14:43,727 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 14:14:43,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:14:43,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:14:43,731 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:43,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:14:43,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:14:43,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:14:43,752 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:14:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:14:45,818 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:14:45,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:14:45,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-07 14:14:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:14:45,839 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:14:45,840 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:14:45,847 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 14:14:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:14:45,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:14:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:14:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 14:14:45,935 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 38 [2018-11-07 14:14:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:14:45,936 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 14:14:45,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:14:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 14:14:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 14:14:45,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:45,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:45,945 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:45,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:45,946 INFO L82 PathProgramCache]: Analyzing trace with hash 247043784, now seen corresponding path program 1 times [2018-11-07 14:14:45,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:45,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:45,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:45,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:45,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:46,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:14:46,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:14:46,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:46,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:14:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:14:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:14:46,366 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 14:14:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:14:48,973 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-11-07 14:14:48,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:14:48,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-11-07 14:14:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:14:48,983 INFO L225 Difference]: With dead ends: 1140 [2018-11-07 14:14:48,983 INFO L226 Difference]: Without dead ends: 790 [2018-11-07 14:14:48,986 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:14:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-11-07 14:14:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-11-07 14:14:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-11-07 14:14:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-11-07 14:14:49,045 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 158 [2018-11-07 14:14:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:14:49,046 INFO L480 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-11-07 14:14:49,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:14:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-11-07 14:14:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-07 14:14:49,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:49,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:49,053 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:49,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:49,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1650350691, now seen corresponding path program 1 times [2018-11-07 14:14:49,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:49,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:49,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:49,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:49,058 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:49,421 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:14:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:49,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:14:49,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:14:49,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:49,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:14:49,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:14:49,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:14:49,690 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-11-07 14:14:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:14:53,734 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-11-07 14:14:53,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:14:53,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-11-07 14:14:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:14:53,748 INFO L225 Difference]: With dead ends: 1975 [2018-11-07 14:14:53,748 INFO L226 Difference]: Without dead ends: 1197 [2018-11-07 14:14:53,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:14:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-11-07 14:14:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-11-07 14:14:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-11-07 14:14:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-11-07 14:14:53,794 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 165 [2018-11-07 14:14:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:14:53,796 INFO L480 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-11-07 14:14:53,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:14:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-11-07 14:14:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-07 14:14:53,804 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:14:53,804 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:14:53,804 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:14:53,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:53,805 INFO L82 PathProgramCache]: Analyzing trace with hash -837763145, now seen corresponding path program 1 times [2018-11-07 14:14:53,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:14:53,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:53,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:14:53,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:14:53,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:14:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:14:54,310 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 14:14:54,816 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 14:14:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:14:55,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:14:55,269 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:14:55,270 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-11-07 14:14:55,273 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:14:55,327 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:14:55,327 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:14:55,756 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:14:56,589 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:14:56,591 INFO L272 AbstractInterpreter]: Visited 128 different actions 371 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:14:56,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:14:56,641 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:14:57,425 INFO L227 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 74.85% of their original sizes. [2018-11-07 14:14:57,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:14:58,593 INFO L415 sIntCurrentIteration]: We unified 228 AI predicates to 228 [2018-11-07 14:14:58,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:14:58,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:14:58,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [13] total 32 [2018-11-07 14:14:58,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:14:58,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 14:14:58,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 14:14:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-11-07 14:14:58,596 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 21 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown