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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:34:59,036 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:34:59,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:34:59,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:34:59,050 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:34:59,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:34:59,052 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:34:59,054 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:34:59,056 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:34:59,057 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:34:59,057 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:34:59,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:34:59,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:34:59,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:34:59,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:34:59,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:34:59,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:34:59,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:34:59,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:34:59,069 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:34:59,070 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:34:59,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:34:59,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:34:59,074 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:34:59,074 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:34:59,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:34:59,076 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:34:59,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:34:59,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:34:59,079 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:34:59,080 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:34:59,080 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:34:59,081 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:34:59,081 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:34:59,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:34:59,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:34:59,083 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:34:59,100 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:34:59,101 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:34:59,102 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:34:59,102 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:34:59,102 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:34:59,102 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:34:59,102 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:34:59,103 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:34:59,103 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:34:59,103 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:34:59,103 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:34:59,103 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:34:59,104 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:34:59,105 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:34:59,106 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:34:59,107 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:34:59,107 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:34:59,107 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:34:59,107 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:34:59,107 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:34:59,108 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:34:59,108 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:34:59,108 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:34:59,108 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:34:59,108 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:34:59,110 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:34:59,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:34:59,110 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:34:59,110 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:34:59,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:34:59,111 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:34:59,111 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:34:59,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:34:59,112 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:34:59,112 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:34:59,112 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:34:59,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:34:59,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:34:59,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:34:59,194 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:34:59,195 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:34:59,195 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label16_true-unreach-call.c [2018-11-07 09:34:59,267 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e38eca97/a34e0cb88ee547cc897b148d39d3bcc0/FLAG8038aeda0 [2018-11-07 09:34:59,984 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:34:59,985 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label16_true-unreach-call.c [2018-11-07 09:35:00,013 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e38eca97/a34e0cb88ee547cc897b148d39d3bcc0/FLAG8038aeda0 [2018-11-07 09:35:00,034 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e38eca97/a34e0cb88ee547cc897b148d39d3bcc0 [2018-11-07 09:35:00,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:35:00,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:35:00,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:35:00,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:35:00,059 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:35:00,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:35:00" (1/1) ... [2018-11-07 09:35:00,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f10323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:00, skipping insertion in model container [2018-11-07 09:35:00,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:35:00" (1/1) ... [2018-11-07 09:35:00,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:35:00,220 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:35:01,375 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:35:01,380 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:35:01,836 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:35:01,863 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:35:01,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01 WrapperNode [2018-11-07 09:35:01,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:35:01,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:35:01,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:35:01,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:35:01,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:35:02,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:35:02,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:35:02,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:35:02,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (1/1) ... [2018-11-07 09:35:02,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:35:02,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:35:02,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:35:02,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:35:02,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (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 09:35:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:35:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:35:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:35:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:35:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:35:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:35:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:35:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:35:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:35:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:35:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:35:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:35:02,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:35:09,940 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:35:09,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:35:09 BoogieIcfgContainer [2018-11-07 09:35:09,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:35:09,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:35:09,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:35:09,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:35:09,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:35:00" (1/3) ... [2018-11-07 09:35:09,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e95455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:35:09, skipping insertion in model container [2018-11-07 09:35:09,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:35:01" (2/3) ... [2018-11-07 09:35:09,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e95455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:35:09, skipping insertion in model container [2018-11-07 09:35:09,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:35:09" (3/3) ... [2018-11-07 09:35:09,950 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label16_true-unreach-call.c [2018-11-07 09:35:09,961 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:35:09,974 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:35:09,994 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:35:10,053 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:35:10,054 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:35:10,054 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:35:10,054 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:35:10,054 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:35:10,055 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:35:10,055 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:35:10,055 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:35:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:35:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-07 09:35:10,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:10,123 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] [2018-11-07 09:35:10,126 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:10,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:10,133 INFO L82 PathProgramCache]: Analyzing trace with hash -83199201, now seen corresponding path program 1 times [2018-11-07 09:35:10,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:10,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:10,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:10,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:10,189 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:10,647 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:35:10,762 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 09:35:10,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:10,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:35:10,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:10,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:35:10,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:35:10,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:35:10,793 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:35:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:18,050 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:35:18,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:35:18,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-11-07 09:35:18,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:18,100 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:35:18,100 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:35:18,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:35:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:35:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:35:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:35:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 09:35:18,329 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 53 [2018-11-07 09:35:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:18,330 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 09:35:18,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:35:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 09:35:18,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 09:35:18,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:18,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:18,345 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:18,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:18,346 INFO L82 PathProgramCache]: Analyzing trace with hash -159843752, now seen corresponding path program 1 times [2018-11-07 09:35:18,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:18,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:18,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:18,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:18,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:18,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:18,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:35:18,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:18,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:35:18,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:35:18,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:35:18,634 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 09:35:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:30,201 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-11-07 09:35:30,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:35:30,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 09:35:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:30,246 INFO L225 Difference]: With dead ends: 5789 [2018-11-07 09:35:30,247 INFO L226 Difference]: Without dead ends: 4321 [2018-11-07 09:35:30,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:35:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-11-07 09:35:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-11-07 09:35:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-11-07 09:35:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-11-07 09:35:30,396 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 127 [2018-11-07 09:35:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:30,397 INFO L480 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-11-07 09:35:30,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:35:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-11-07 09:35:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 09:35:30,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:30,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:30,402 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:30,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:30,403 INFO L82 PathProgramCache]: Analyzing trace with hash -204584991, now seen corresponding path program 1 times [2018-11-07 09:35:30,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:30,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:30,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:30,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:30,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:30,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:30,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:35:30,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:30,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:35:30,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:35:30,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:35:30,573 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-11-07 09:35:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:41,143 INFO L93 Difference]: Finished difference Result 14334 states and 23466 transitions. [2018-11-07 09:35:41,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:35:41,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 09:35:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:41,195 INFO L225 Difference]: With dead ends: 14334 [2018-11-07 09:35:41,195 INFO L226 Difference]: Without dead ends: 10045 [2018-11-07 09:35:41,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:35:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2018-11-07 09:35:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9941. [2018-11-07 09:35:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2018-11-07 09:35:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 14577 transitions. [2018-11-07 09:35:41,458 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 14577 transitions. Word has length 130 [2018-11-07 09:35:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:41,459 INFO L480 AbstractCegarLoop]: Abstraction has 9941 states and 14577 transitions. [2018-11-07 09:35:41,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:35:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 14577 transitions. [2018-11-07 09:35:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 09:35:41,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:41,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:35:41,465 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:41,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:41,465 INFO L82 PathProgramCache]: Analyzing trace with hash -167780547, now seen corresponding path program 1 times [2018-11-07 09:35:41,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:41,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:41,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:41,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:41,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:35:41,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:35:41,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:35:41,736 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:41,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:35:41,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:35:41,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:35:41,737 INFO L87 Difference]: Start difference. First operand 9941 states and 14577 transitions. Second operand 4 states. [2018-11-07 09:35:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:35:48,623 INFO L93 Difference]: Finished difference Result 26970 states and 40877 transitions. [2018-11-07 09:35:48,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:35:48,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2018-11-07 09:35:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:35:48,685 INFO L225 Difference]: With dead ends: 26970 [2018-11-07 09:35:48,685 INFO L226 Difference]: Without dead ends: 17035 [2018-11-07 09:35:48,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 09:35:48,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2018-11-07 09:35:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 17035. [2018-11-07 09:35:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17035 states. [2018-11-07 09:35:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17035 states to 17035 states and 24166 transitions. [2018-11-07 09:35:49,064 INFO L78 Accepts]: Start accepts. Automaton has 17035 states and 24166 transitions. Word has length 160 [2018-11-07 09:35:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:35:49,065 INFO L480 AbstractCegarLoop]: Abstraction has 17035 states and 24166 transitions. [2018-11-07 09:35:49,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:35:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states and 24166 transitions. [2018-11-07 09:35:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-07 09:35:49,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:35:49,075 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, 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] [2018-11-07 09:35:49,075 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:35:49,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:49,079 INFO L82 PathProgramCache]: Analyzing trace with hash 153625489, now seen corresponding path program 1 times [2018-11-07 09:35:49,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:35:49,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:49,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:35:49,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:35:49,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:35:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:35:49,425 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:35:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:35:49,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:35:49,633 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:35:49,634 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-07 09:35:49,637 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1947], [1949], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2164], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:35:49,696 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:35:49,697 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:35:50,201 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:35:50,203 INFO L272 AbstractInterpreter]: Visited 103 different actions 103 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:35:50,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:35:50,246 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:35:50,770 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 78.02% of their original sizes. [2018-11-07 09:35:50,771 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:35:50,893 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-11-07 09:35:50,893 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:35:50,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:35:50,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:35:50,895 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:35:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:35:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:35:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:35:50,896 INFO L87 Difference]: Start difference. First operand 17035 states and 24166 transitions. Second operand 6 states. [2018-11-07 09:37:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:37:49,630 INFO L93 Difference]: Finished difference Result 34769 states and 49115 transitions. [2018-11-07 09:37:49,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:37:49,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-11-07 09:37:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:37:49,687 INFO L225 Difference]: With dead ends: 34769 [2018-11-07 09:37:49,687 INFO L226 Difference]: Without dead ends: 17740 [2018-11-07 09:37:49,726 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:37:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17740 states. [2018-11-07 09:37:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17740 to 17738. [2018-11-07 09:37:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17738 states. [2018-11-07 09:37:50,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17738 states to 17738 states and 24881 transitions. [2018-11-07 09:37:50,045 INFO L78 Accepts]: Start accepts. Automaton has 17738 states and 24881 transitions. Word has length 233 [2018-11-07 09:37:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:37:50,045 INFO L480 AbstractCegarLoop]: Abstraction has 17738 states and 24881 transitions. [2018-11-07 09:37:50,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:37:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17738 states and 24881 transitions. [2018-11-07 09:37:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-11-07 09:37:50,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:37:50,060 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:37:50,061 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:37:50,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash -75631712, now seen corresponding path program 1 times [2018-11-07 09:37:50,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:37:50,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:50,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:37:50,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:37:50,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:37:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:37:50,634 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:37:50,839 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:37:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 197 proven. 179 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:37:51,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:37:51,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:37:51,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-11-07 09:37:51,520 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1947], [1949], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2132], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:37:51,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:37:51,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:37:56,224 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:37:56,225 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:37:56,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:37:56,265 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:37:58,819 INFO L227 lantSequenceWeakener]: Weakened 406 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 09:37:58,821 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:37:59,221 INFO L415 sIntCurrentIteration]: We unified 408 AI predicates to 408 [2018-11-07 09:37:59,221 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:37:59,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:37:59,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:37:59,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:37:59,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:37:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:37:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:37:59,224 INFO L87 Difference]: Start difference. First operand 17738 states and 24881 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown