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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:15:20,024 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:15:20,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:15:20,042 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:15:20,043 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:15:20,044 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:15:20,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:15:20,049 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:15:20,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:15:20,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:15:20,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:15:20,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:15:20,060 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:15:20,063 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:15:20,064 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:15:20,065 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:15:20,068 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:15:20,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:15:20,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:15:20,075 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:15:20,076 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:15:20,079 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:15:20,083 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:15:20,083 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:15:20,084 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:15:20,084 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:15:20,086 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:15:20,087 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:15:20,088 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:15:20,090 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:15:20,091 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:15:20,092 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:15:20,092 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:15:20,094 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:15:20,095 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:15:20,095 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:15:20,096 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:15:20,124 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:15:20,124 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:15:20,125 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:15:20,125 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:15:20,125 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:15:20,125 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:15:20,125 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:15:20,126 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:15:20,126 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:15:20,126 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:15:20,127 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:15:20,127 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:15:20,127 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:15:20,128 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:15:20,128 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:15:20,128 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:15:20,128 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:15:20,128 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:15:20,130 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:15:20,130 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:15:20,131 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:15:20,131 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:15:20,131 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:15:20,131 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:15:20,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:15:20,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:15:20,132 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:15:20,132 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:15:20,132 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:15:20,133 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:15:20,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:15:20,133 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:15:20,133 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:15:20,133 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:15:20,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:15:20,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:15:20,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:15:20,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:15:20,217 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:15:20,218 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-11-07 03:15:20,282 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa8f6580/f333c889fd94403595521a471d9ffa85/FLAG9c8a1b1c0 [2018-11-07 03:15:21,096 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:15:21,097 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-11-07 03:15:21,149 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa8f6580/f333c889fd94403595521a471d9ffa85/FLAG9c8a1b1c0 [2018-11-07 03:15:21,164 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa8f6580/f333c889fd94403595521a471d9ffa85 [2018-11-07 03:15:21,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:15:21,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:15:21,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:15:21,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:15:21,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:15:21,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:15:21" (1/1) ... [2018-11-07 03:15:21,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ec1c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:21, skipping insertion in model container [2018-11-07 03:15:21,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:15:21" (1/1) ... [2018-11-07 03:15:21,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:15:21,375 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:15:22,736 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:15:22,740 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:15:23,444 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:15:23,480 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:15:23,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23 WrapperNode [2018-11-07 03:15:23,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:15:23,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:15:23,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:15:23,483 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:15:23,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:23,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:23,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:15:23,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:15:23,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:15:23,882 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:15:23,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:23,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:23,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:23,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:24,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:24,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:24,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (1/1) ... [2018-11-07 03:15:24,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:15:24,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:15:24,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:15:24,168 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:15:24,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (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 03:15:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:15:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:15:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:15:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:15:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:15:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:15:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:15:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:15:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:15:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:15:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:15:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:15:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:15:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:15:24,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:15:33,814 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:15:33,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:15:33 BoogieIcfgContainer [2018-11-07 03:15:33,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:15:33,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:15:33,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:15:33,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:15:33,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:15:21" (1/3) ... [2018-11-07 03:15:33,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791dfe7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:15:33, skipping insertion in model container [2018-11-07 03:15:33,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:23" (2/3) ... [2018-11-07 03:15:33,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791dfe7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:15:33, skipping insertion in model container [2018-11-07 03:15:33,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:15:33" (3/3) ... [2018-11-07 03:15:33,823 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-11-07 03:15:33,833 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:15:33,843 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:15:33,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:15:33,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:15:33,907 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:15:33,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:15:33,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:15:33,908 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:15:33,908 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:15:33,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:15:33,908 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:15:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 03:15:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 03:15:33,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:15:33,969 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:15:33,971 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:15:33,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:15:33,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2099536220, now seen corresponding path program 1 times [2018-11-07 03:15:33,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:15:34,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:34,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:15:34,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:34,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:15:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:15:34,423 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 03:15:34,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:15:34,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:15:34,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:15:34,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:15:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:15:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:15:34,451 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 03:15:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:15:48,173 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-11-07 03:15:48,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:15:48,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 03:15:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:15:48,227 INFO L225 Difference]: With dead ends: 4105 [2018-11-07 03:15:48,227 INFO L226 Difference]: Without dead ends: 2979 [2018-11-07 03:15:48,240 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:15:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-11-07 03:15:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-11-07 03:15:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-11-07 03:15:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-11-07 03:15:48,434 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 54 [2018-11-07 03:15:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:15:48,434 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-11-07 03:15:48,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:15:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-11-07 03:15:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 03:15:48,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:15:48,460 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:15:48,461 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:15:48,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:15:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 5864073, now seen corresponding path program 1 times [2018-11-07 03:15:48,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:15:48,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:48,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:15:48,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:15:48,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:15:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:15:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:15:48,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:15:48,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:15:48,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:15:48,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:15:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:15:48,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:15:48,870 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-11-07 03:16:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:16:04,571 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-11-07 03:16:04,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:16:04,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 03:16:04,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:16:04,620 INFO L225 Difference]: With dead ends: 10635 [2018-11-07 03:16:04,621 INFO L226 Difference]: Without dead ends: 7792 [2018-11-07 03:16:04,640 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:16:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-11-07 03:16:04,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-11-07 03:16:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-11-07 03:16:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-11-07 03:16:04,852 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 125 [2018-11-07 03:16:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:16:04,852 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-11-07 03:16:04,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:16:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-11-07 03:16:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 03:16:04,856 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:04,856 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:04,856 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:04,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:04,857 INFO L82 PathProgramCache]: Analyzing trace with hash 652308344, now seen corresponding path program 1 times [2018-11-07 03:16:04,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:04,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:04,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:04,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:04,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:16:05,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:16:05,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:16:05,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:05,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:16:05,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:16:05,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:16:05,146 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-11-07 03:16:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:16:16,472 INFO L93 Difference]: Finished difference Result 20526 states and 33998 transitions. [2018-11-07 03:16:16,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:16:16,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 03:16:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:16:16,539 INFO L225 Difference]: With dead ends: 20526 [2018-11-07 03:16:16,539 INFO L226 Difference]: Without dead ends: 12803 [2018-11-07 03:16:16,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:16:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2018-11-07 03:16:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12725. [2018-11-07 03:16:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12725 states. [2018-11-07 03:16:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 19312 transitions. [2018-11-07 03:16:16,876 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 19312 transitions. Word has length 128 [2018-11-07 03:16:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:16:16,877 INFO L480 AbstractCegarLoop]: Abstraction has 12725 states and 19312 transitions. [2018-11-07 03:16:16,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:16:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 19312 transitions. [2018-11-07 03:16:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 03:16:16,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:16,889 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:16,889 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:16,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1098248393, now seen corresponding path program 1 times [2018-11-07 03:16:16,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:16,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:16,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:16,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:16,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:16:17,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:16:17,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:16:17,307 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:17,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:16:17,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:16:17,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:16:17,310 INFO L87 Difference]: Start difference. First operand 12725 states and 19312 transitions. Second operand 5 states. [2018-11-07 03:16:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:16:26,895 INFO L93 Difference]: Finished difference Result 38404 states and 61833 transitions. [2018-11-07 03:16:26,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:16:26,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-11-07 03:16:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:16:27,000 INFO L225 Difference]: With dead ends: 38404 [2018-11-07 03:16:27,000 INFO L226 Difference]: Without dead ends: 25685 [2018-11-07 03:16:27,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:16:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25685 states. [2018-11-07 03:16:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25685 to 25392. [2018-11-07 03:16:27,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25392 states. [2018-11-07 03:16:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25392 states to 25392 states and 37263 transitions. [2018-11-07 03:16:27,619 INFO L78 Accepts]: Start accepts. Automaton has 25392 states and 37263 transitions. Word has length 214 [2018-11-07 03:16:27,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:16:27,620 INFO L480 AbstractCegarLoop]: Abstraction has 25392 states and 37263 transitions. [2018-11-07 03:16:27,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:16:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25392 states and 37263 transitions. [2018-11-07 03:16:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-11-07 03:16:27,649 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:16:27,650 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 03:16:27,650 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:16:27,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:27,651 INFO L82 PathProgramCache]: Analyzing trace with hash -426955638, now seen corresponding path program 1 times [2018-11-07 03:16:27,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:16:27,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:27,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:16:27,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:16:27,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:16:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:16:28,002 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:16:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:16:28,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:16:28,405 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:16:28,408 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-11-07 03:16:28,419 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2959], [2961], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3132], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3571], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 03:16:28,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:16:28,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:16:37,155 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:16:37,157 INFO L272 AbstractInterpreter]: Visited 165 different actions 165 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:16:37,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:16:37,191 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:16:43,234 INFO L227 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 71.59% of their original sizes. [2018-11-07 03:16:43,236 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:16:45,549 INFO L415 sIntCurrentIteration]: We unified 286 AI predicates to 286 [2018-11-07 03:16:45,549 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:16:45,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:16:45,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-11-07 03:16:45,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:16:45,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 03:16:45,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 03:16:45,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-07 03:16:45,552 INFO L87 Difference]: Start difference. First operand 25392 states and 37263 transitions. Second operand 12 states. [2018-11-07 03:17:09,790 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