java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:18:42,039 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:18:42,041 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:18:42,054 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:18:42,055 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:18:42,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:18:42,061 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:18:42,064 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:18:42,066 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:18:42,074 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:18:42,075 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:18:42,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:18:42,079 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:18:42,080 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:18:42,083 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:18:42,084 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:18:42,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:18:42,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:18:42,094 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:18:42,096 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:18:42,097 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:18:42,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:18:42,107 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:18:42,107 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:18:42,107 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:18:42,109 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:18:42,109 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:18:42,110 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:18:42,114 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:18:42,115 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:18:42,115 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:18:42,116 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:18:42,117 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:18:42,117 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:18:42,118 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:18:42,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:18:42,120 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:18:42,147 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:18:42,148 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:18:42,149 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:18:42,149 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:18:42,150 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:18:42,150 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:18:42,150 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:18:42,150 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:18:42,151 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:18:42,151 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:18:42,151 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:18:42,152 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:18:42,152 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:18:42,152 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:18:42,153 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:18:42,153 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:18:42,153 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:18:42,153 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:18:42,153 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:18:42,154 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:18:42,155 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:18:42,155 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:18:42,155 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:18:42,155 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:18:42,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:18:42,156 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:18:42,156 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:18:42,156 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:18:42,156 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:18:42,157 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:18:42,157 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:18:42,157 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:18:42,157 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:18:42,157 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:18:42,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:18:42,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:18:42,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:18:42,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:18:42,240 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:18:42,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12_true-unreach-call.c [2018-11-07 15:18:42,301 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8705618/d6049395d5d54985b1a40b1104da7004/FLAGb4840bfc3 [2018-11-07 15:18:42,943 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:18:42,944 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label12_true-unreach-call.c [2018-11-07 15:18:42,960 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8705618/d6049395d5d54985b1a40b1104da7004/FLAGb4840bfc3 [2018-11-07 15:18:42,977 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8705618/d6049395d5d54985b1a40b1104da7004 [2018-11-07 15:18:42,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:18:42,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:18:42,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:18:42,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:18:42,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:18:42,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:18:42" (1/1) ... [2018-11-07 15:18:43,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bd1723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:43, skipping insertion in model container [2018-11-07 15:18:43,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:18:42" (1/1) ... [2018-11-07 15:18:43,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:18:43,119 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:18:43,826 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:18:43,830 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:18:44,112 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:18:44,135 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:18:44,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44 WrapperNode [2018-11-07 15:18:44,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:18:44,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:18:44,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:18:44,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:18:44,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:18:44,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:18:44,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:18:44,380 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:18:44,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (1/1) ... [2018-11-07 15:18:44,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:18:44,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:18:44,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:18:44,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:18:44,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (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 15:18:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:18:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:18:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:18:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:18:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:18:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:18:44,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:18:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:18:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:18:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:18:44,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:18:50,719 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:18:50,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:18:50 BoogieIcfgContainer [2018-11-07 15:18:50,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:18:50,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:18:50,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:18:50,725 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:18:50,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:18:42" (1/3) ... [2018-11-07 15:18:50,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbee0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:18:50, skipping insertion in model container [2018-11-07 15:18:50,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:18:44" (2/3) ... [2018-11-07 15:18:50,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbee0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:18:50, skipping insertion in model container [2018-11-07 15:18:50,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:18:50" (3/3) ... [2018-11-07 15:18:50,729 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label12_true-unreach-call.c [2018-11-07 15:18:50,740 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:18:50,751 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:18:50,766 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:18:50,817 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:18:50,817 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:18:50,817 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:18:50,817 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:18:50,817 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:18:50,818 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:18:50,818 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:18:50,818 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:18:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:18:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 15:18:50,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:18:50,874 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] [2018-11-07 15:18:50,876 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:18:50,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:18:50,883 INFO L82 PathProgramCache]: Analyzing trace with hash 806508676, now seen corresponding path program 1 times [2018-11-07 15:18:50,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:18:50,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:18:50,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:18:50,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:18:50,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:18:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:18:51,473 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 15:18:51,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:18:51,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:18:51,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:18:51,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:18:51,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:18:51,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:18:51,505 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 15:18:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:18:54,992 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 15:18:54,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:18:54,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-07 15:18:54,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:18:55,017 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 15:18:55,017 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 15:18:55,028 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:18:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 15:18:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 15:18:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 15:18:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 15:18:55,184 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 46 [2018-11-07 15:18:55,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:18:55,185 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 15:18:55,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:18:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 15:18:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 15:18:55,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:18:55,197 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] [2018-11-07 15:18:55,200 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:18:55,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:18:55,200 INFO L82 PathProgramCache]: Analyzing trace with hash 875777906, now seen corresponding path program 1 times [2018-11-07 15:18:55,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:18:55,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:18:55,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:18:55,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:18:55,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:18:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:18:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:18:55,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:18:55,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:18:55,509 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:18:55,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:18:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:18:55,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:18:55,512 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 15:19:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:01,792 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-07 15:19:01,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:01,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-07 15:19:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:01,808 INFO L225 Difference]: With dead ends: 2194 [2018-11-07 15:19:01,809 INFO L226 Difference]: Without dead ends: 1456 [2018-11-07 15:19:01,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:19:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-07 15:19:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-07 15:19:01,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 15:19:01,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-07 15:19:01,888 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 116 [2018-11-07 15:19:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:01,889 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-07 15:19:01,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:19:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-07 15:19:01,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 15:19:01,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:01,904 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, 1, 1, 1, 1, 1, 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 15:19:01,904 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:01,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:01,905 INFO L82 PathProgramCache]: Analyzing trace with hash -545095373, now seen corresponding path program 1 times [2018-11-07 15:19:01,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:01,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:01,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:01,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:01,909 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:02,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:02,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:19:02,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:02,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:19:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:19:02,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:19:02,187 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-07 15:19:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:06,704 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-07 15:19:06,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:06,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 15:19:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:06,724 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 15:19:06,725 INFO L226 Difference]: Without dead ends: 2506 [2018-11-07 15:19:06,734 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 15:19:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-07 15:19:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-07 15:19:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-07 15:19:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-07 15:19:06,822 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 145 [2018-11-07 15:19:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:06,824 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-07 15:19:06,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:19:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-07 15:19:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-07 15:19:06,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:06,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:06,828 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:06,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:06,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1167752721, now seen corresponding path program 1 times [2018-11-07 15:19:06,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:06,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:06,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:06,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:06,831 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:19:07,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:19:07,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:19:07,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:07,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:19:07,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:19:07,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:19:07,111 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-07 15:19:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:19:10,178 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-07 15:19:10,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:19:10,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-11-07 15:19:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:19:10,214 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 15:19:10,214 INFO L226 Difference]: Without dead ends: 3577 [2018-11-07 15:19:10,226 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 15:19:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-07 15:19:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-07 15:19:10,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-07 15:19:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-07 15:19:10,353 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 163 [2018-11-07 15:19:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:19:10,354 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-07 15:19:10,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:19:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-07 15:19:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 15:19:10,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:19:10,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:10,362 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:19:10,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:10,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1830344664, now seen corresponding path program 1 times [2018-11-07 15:19:10,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:19:10,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:10,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:19:10,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:19:10,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:19:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:19:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 106 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:19:10,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:19:10,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:19:10,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 15:19:10,764 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:19:10,839 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:19:10,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:19:11,704 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:19:11,708 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:19:11,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:19:11,757 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:19:12,453 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 77.95% of their original sizes. [2018-11-07 15:19:12,453 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:19:13,706 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 15:19:13,706 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:19:13,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:19:13,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 15:19:13,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:19:13,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 15:19:13,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 15:19:13,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:19:13,709 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 11 states. [2018-11-07 15:19:19,795 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