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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:49:41,027 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:49:41,029 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:49:41,042 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:49:41,042 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:49:41,043 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:49:41,045 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:49:41,047 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:49:41,051 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:49:41,052 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:49:41,053 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:49:41,053 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:49:41,054 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:49:41,055 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:49:41,057 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:49:41,058 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:49:41,058 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:49:41,062 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:49:41,066 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:49:41,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:49:41,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:49:41,080 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:49:41,082 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:49:41,086 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:49:41,086 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:49:41,087 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:49:41,088 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:49:41,091 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:49:41,092 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:49:41,094 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:49:41,096 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:49:41,097 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:49:41,097 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:49:41,098 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:49:41,099 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:49:41,102 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:49:41,102 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:49:41,136 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:49:41,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:49:41,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:49:41,139 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:49:41,139 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:49:41,139 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:49:41,139 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:49:41,139 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:49:41,140 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:49:41,142 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:49:41,142 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:49:41,143 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:49:41,143 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:49:41,144 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:49:41,144 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:49:41,144 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:49:41,144 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:49:41,145 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:49:41,146 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:49:41,146 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:49:41,147 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:49:41,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:49:41,147 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:49:41,147 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:49:41,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:49:41,148 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:49:41,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:49:41,149 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:49:41,149 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:49:41,149 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:49:41,149 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:49:41,149 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:49:41,150 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:49:41,150 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:49:41,222 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:49:41,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:49:41,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:49:41,246 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:49:41,246 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:49:41,247 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-10-27 02:49:41,313 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/396ef5f7d/01f34cfed43d411b92d6b25dd78ede9e/FLAGcd2762b79 [2018-10-27 02:49:42,123 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:49:42,124 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-10-27 02:49:42,162 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/396ef5f7d/01f34cfed43d411b92d6b25dd78ede9e/FLAGcd2762b79 [2018-10-27 02:49:42,182 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/396ef5f7d/01f34cfed43d411b92d6b25dd78ede9e [2018-10-27 02:49:42,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:49:42,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:49:42,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:49:42,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:49:42,206 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:49:42,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:49:42" (1/1) ... [2018-10-27 02:49:42,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bb8d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:42, skipping insertion in model container [2018-10-27 02:49:42,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:49:42" (1/1) ... [2018-10-27 02:49:42,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:49:42,380 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:49:43,644 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:49:43,649 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:49:44,260 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:49:44,296 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:49:44,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44 WrapperNode [2018-10-27 02:49:44,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:49:44,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:49:44,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:49:44,299 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:49:44,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:49:44,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:49:44,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:49:44,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:49:44,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:44,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:45,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (1/1) ... [2018-10-27 02:49:45,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:49:45,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:49:45,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:49:45,075 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:49:45,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (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 02:49:45,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:49:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:49:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:49:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:49:45,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:49:45,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:49:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:49:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:49:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:49:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:49:45,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:49:45,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:49:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:49:45,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:49:57,138 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:49:57,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:49:57 BoogieIcfgContainer [2018-10-27 02:49:57,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:49:57,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:49:57,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:49:57,146 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:49:57,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:49:42" (1/3) ... [2018-10-27 02:49:57,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7790de7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:49:57, skipping insertion in model container [2018-10-27 02:49:57,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:49:44" (2/3) ... [2018-10-27 02:49:57,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7790de7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:49:57, skipping insertion in model container [2018-10-27 02:49:57,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:49:57" (3/3) ... [2018-10-27 02:49:57,150 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label57_true-unreach-call.c [2018-10-27 02:49:57,160 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:49:57,171 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:49:57,189 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:49:57,237 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:49:57,237 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:49:57,237 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:49:57,237 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:49:57,237 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:49:57,238 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:49:57,238 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:49:57,238 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:49:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 02:49:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-27 02:49:57,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:49:57,287 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:49:57,290 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:49:57,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:49:57,296 INFO L82 PathProgramCache]: Analyzing trace with hash -937997924, now seen corresponding path program 1 times [2018-10-27 02:49:57,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:49:57,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:49:57,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:49:57,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:49:57,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:49:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:49:57,766 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 02:49:57,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:49:57,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:49:57,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:49:57,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:49:57,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:49:57,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:49:57,798 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-27 02:50:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:50:10,775 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-27 02:50:10,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:50:10,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-27 02:50:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:50:10,837 INFO L225 Difference]: With dead ends: 3234 [2018-10-27 02:50:10,837 INFO L226 Difference]: Without dead ends: 2388 [2018-10-27 02:50:10,858 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 02:50:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-27 02:50:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-27 02:50:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-27 02:50:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-10-27 02:50:11,093 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 44 [2018-10-27 02:50:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:50:11,093 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-10-27 02:50:11,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:50:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-10-27 02:50:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-27 02:50:11,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:50:11,106 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:11,106 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:50:11,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:50:11,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1418156750, now seen corresponding path program 1 times [2018-10-27 02:50:11,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:50:11,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:50:11,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:50:11,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:50:11,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:50:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:50:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:50:11,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:50:11,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:50:11,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:50:11,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:50:11,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:50:11,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:50:11,679 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-10-27 02:50:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:50:30,537 INFO L93 Difference]: Finished difference Result 9459 states and 16272 transitions. [2018-10-27 02:50:30,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 02:50:30,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-27 02:50:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:50:30,591 INFO L225 Difference]: With dead ends: 9459 [2018-10-27 02:50:30,591 INFO L226 Difference]: Without dead ends: 7077 [2018-10-27 02:50:30,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:50:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2018-10-27 02:50:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 7026. [2018-10-27 02:50:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7026 states. [2018-10-27 02:50:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 10545 transitions. [2018-10-27 02:50:30,823 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 10545 transitions. Word has length 144 [2018-10-27 02:50:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:50:30,824 INFO L481 AbstractCegarLoop]: Abstraction has 7026 states and 10545 transitions. [2018-10-27 02:50:30,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:50:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 10545 transitions. [2018-10-27 02:50:30,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-27 02:50:30,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:50:30,832 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:50:30,833 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:50:30,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:50:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash -455141647, now seen corresponding path program 1 times [2018-10-27 02:50:30,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:50:30,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:50:30,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:50:30,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:50:30,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:50:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:50:31,056 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:50:31,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:50:31,057 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:50:31,058 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-27 02:50:31,060 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2119], [2121], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 02:50:31,136 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:50:31,136 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:50:33,456 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:50:33,458 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 02:50:33,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:50:33,471 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:50:35,745 INFO L227 lantSequenceWeakener]: Weakened 189 states. On average, predicates are now at 75.61% of their original sizes. [2018-10-27 02:50:35,746 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:50:36,168 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-10-27 02:50:36,169 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:50:36,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:50:36,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 02:50:36,171 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:50:36,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 02:50:36,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 02:50:36,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:50:36,174 INFO L87 Difference]: Start difference. First operand 7026 states and 10545 transitions. Second operand 8 states. [2018-10-27 02:50:42,358 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown