java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:39:32,035 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:39:32,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:39:32,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:39:32,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:39:32,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:39:32,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:39:32,061 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:39:32,064 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:39:32,065 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:39:32,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:39:32,067 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:39:32,068 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:39:32,069 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:39:32,070 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:39:32,071 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:39:32,078 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:39:32,083 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:39:32,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:39:32,089 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:39:32,092 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:39:32,094 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:39:32,100 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:39:32,100 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:39:32,100 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:39:32,101 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:39:32,103 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:39:32,104 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:39:32,106 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:39:32,107 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:39:32,107 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:39:32,110 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:39:32,110 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:39:32,110 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:39:32,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:39:32,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:39:32,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:39:32,136 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:39:32,136 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:39:32,137 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:39:32,137 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:39:32,137 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:39:32,138 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:39:32,141 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:39:32,141 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:39:32,141 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:39:32,142 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:39:32,142 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:39:32,142 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:39:32,143 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:39:32,143 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:39:32,143 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:39:32,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:39:32,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:39:32,144 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:39:32,144 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:39:32,144 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:39:32,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:39:32,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:39:32,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:39:32,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:39:32,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:39:32,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:39:32,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:39:32,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:39:32,148 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:39:32,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:39:32,149 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:39:32,149 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:39:32,149 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:39:32,149 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:39:32,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:39:32,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:39:32,227 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:39:32,228 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:39:32,229 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:39:32,230 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-10-27 14:39:32,293 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9aa8f0093/4bf8777991e04ed7938fb24c0cc252e9/FLAG3e7b89da3 [2018-10-27 14:39:33,034 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:39:33,035 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-10-27 14:39:33,064 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9aa8f0093/4bf8777991e04ed7938fb24c0cc252e9/FLAG3e7b89da3 [2018-10-27 14:39:33,087 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9aa8f0093/4bf8777991e04ed7938fb24c0cc252e9 [2018-10-27 14:39:33,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:39:33,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:39:33,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:39:33,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:39:33,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:39:33,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:39:33" (1/1) ... [2018-10-27 14:39:33,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:33, skipping insertion in model container [2018-10-27 14:39:33,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:39:33" (1/1) ... [2018-10-27 14:39:33,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:39:33,252 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:39:34,015 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:39:34,021 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:39:34,329 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:39:34,353 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:39:34,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34 WrapperNode [2018-10-27 14:39:34,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:39:34,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:39:34,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:39:34,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:39:34,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:39:34,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:39:34,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:39:34,766 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:39:34,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:34,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... [2018-10-27 14:39:35,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:39:35,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:39:35,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:39:35,021 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:39:35,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:39:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:39:35,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:39:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:39:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:39:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:39:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:39:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:39:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:39:35,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:39:35,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:39:42,214 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:39:42,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:39:42 BoogieIcfgContainer [2018-10-27 14:39:42,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:39:42,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:39:42,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:39:42,222 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:39:42,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:39:33" (1/3) ... [2018-10-27 14:39:42,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4213d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:39:42, skipping insertion in model container [2018-10-27 14:39:42,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:34" (2/3) ... [2018-10-27 14:39:42,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4213d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:39:42, skipping insertion in model container [2018-10-27 14:39:42,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:39:42" (3/3) ... [2018-10-27 14:39:42,227 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label52_true-unreach-call.c [2018-10-27 14:39:42,237 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:39:42,246 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:39:42,264 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:39:42,307 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:39:42,307 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:39:42,307 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:39:42,307 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:39:42,308 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:39:42,308 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:39:42,308 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:39:42,308 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:39:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:39:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-27 14:39:42,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:39:42,360 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] [2018-10-27 14:39:42,362 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:39:42,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:39:42,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1248930748, now seen corresponding path program 1 times [2018-10-27 14:39:42,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:39:42,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:42,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:39:42,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:42,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:39:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:39:42,874 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 14:39:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:39:42,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:39:42,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:39:42,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:39:42,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:39:42,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:39:42,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:39:42,967 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 14:39:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:39:52,471 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-27 14:39:52,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:39:52,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-27 14:39:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:39:52,503 INFO L225 Difference]: With dead ends: 1501 [2018-10-27 14:39:52,503 INFO L226 Difference]: Without dead ends: 1057 [2018-10-27 14:39:52,513 INFO L605 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 [2018-10-27 14:39:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-27 14:39:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-27 14:39:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 14:39:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-27 14:39:52,627 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 46 [2018-10-27 14:39:52,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:39:52,628 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-27 14:39:52,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:39:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-27 14:39:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-27 14:39:52,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:39:52,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:39:52,638 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:39:52,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:39:52,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1082195663, now seen corresponding path program 1 times [2018-10-27 14:39:52,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:39:52,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:52,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:39:52,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:52,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:39:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:39:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:39:52,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:39:52,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:39:52,906 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:39:52,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:39:52,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:39:52,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:39:52,909 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-10-27 14:40:00,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:40:00,687 INFO L93 Difference]: Finished difference Result 2729 states and 4237 transitions. [2018-10-27 14:40:00,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:40:00,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2018-10-27 14:40:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:40:00,710 INFO L225 Difference]: With dead ends: 2729 [2018-10-27 14:40:00,711 INFO L226 Difference]: Without dead ends: 1991 [2018-10-27 14:40:00,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:40:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2018-10-27 14:40:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1989. [2018-10-27 14:40:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-10-27 14:40:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2772 transitions. [2018-10-27 14:40:00,828 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2772 transitions. Word has length 116 [2018-10-27 14:40:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:40:00,829 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 2772 transitions. [2018-10-27 14:40:00,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:40:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2772 transitions. [2018-10-27 14:40:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-27 14:40:00,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:40:00,850 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:40:00,850 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:40:00,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:40:00,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1707826587, now seen corresponding path program 1 times [2018-10-27 14:40:00,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:40:00,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:40:00,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:40:00,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:40:00,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:40:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:40:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 81 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 14:40:01,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:40:01,622 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:40:01,623 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-27 14:40:01,625 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:40:01,693 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:40:01,693 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:40:02,254 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:40:04,588 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:40:04,590 INFO L272 AbstractInterpreter]: Visited 164 different actions 1112 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 14:40:04,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:40:04,631 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:40:06,392 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-27 14:40:06,392 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:40:11,925 INFO L415 sIntCurrentIteration]: We unified 299 AI predicates to 299 [2018-10-27 14:40:11,926 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:40:11,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:40:11,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 14:40:11,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:40:11,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 14:40:11,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 14:40:11,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-27 14:40:11,929 INFO L87 Difference]: Start difference. First operand 1989 states and 2772 transitions. Second operand 18 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown