java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:52:32,007 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:52:32,009 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:52:32,030 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:52:32,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:52:32,031 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:52:32,032 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:52:32,034 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:52:32,036 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:52:32,037 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:52:32,038 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:52:32,038 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:52:32,039 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:52:32,040 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:52:32,041 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:52:32,042 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:52:32,043 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:52:32,045 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:52:32,047 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:52:32,049 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:52:32,050 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:52:32,051 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:52:32,054 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:52:32,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:52:32,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:52:32,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:52:32,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:52:32,058 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:52:32,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:52:32,060 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:52:32,060 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:52:32,061 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:52:32,061 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:52:32,061 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:52:32,062 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:52:32,063 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:52:32,064 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:52:32,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:52:32,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:52:32,091 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:52:32,091 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:52:32,092 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:52:32,092 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:52:32,092 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:52:32,092 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:52:32,092 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:52:32,093 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:52:32,093 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:52:32,093 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:52:32,094 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:52:32,094 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:52:32,094 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:52:32,094 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:52:32,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:52:32,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:52:32,095 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:52:32,095 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:52:32,095 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:52:32,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:52:32,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:52:32,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:52:32,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:52:32,097 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:52:32,097 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:52:32,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:52:32,097 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:52:32,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:52:32,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:52:32,098 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:52:32,098 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:52:32,098 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:52:32,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:52:32,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:52:32,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:52:32,161 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:52:32,161 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:52:32,162 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-11-07 00:52:32,227 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e742d776/d5e824810b314fbfabc69c810c4efb38/FLAG2f1faa9e5 [2018-11-07 00:52:33,151 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:52:33,152 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-11-07 00:52:33,195 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e742d776/d5e824810b314fbfabc69c810c4efb38/FLAG2f1faa9e5 [2018-11-07 00:52:33,210 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e742d776/d5e824810b314fbfabc69c810c4efb38 [2018-11-07 00:52:33,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:52:33,225 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:52:33,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:52:33,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:52:33,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:52:33,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:33" (1/1) ... [2018-11-07 00:52:33,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7716928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33, skipping insertion in model container [2018-11-07 00:52:33,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:33" (1/1) ... [2018-11-07 00:52:33,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:52:33,492 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:52:35,503 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:52:35,508 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:52:36,859 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:52:36,924 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:52:36,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36 WrapperNode [2018-11-07 00:52:36,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:52:36,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:52:36,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:52:36,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:52:36,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:52:37,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:52:37,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:52:37,478 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:52:37,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:37,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (1/1) ... [2018-11-07 00:52:38,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:52:38,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:52:38,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:52:38,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:52:38,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (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 00:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:52:38,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 00:52:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 00:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 00:52:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 00:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:52:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:52:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:52:38,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:52:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:52:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:52:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:52:38,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:52:38,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:52:53,454 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:52:53,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:53 BoogieIcfgContainer [2018-11-07 00:52:53,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:52:53,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:52:53,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:52:53,459 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:52:53,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:33" (1/3) ... [2018-11-07 00:52:53,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a6ac1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:53, skipping insertion in model container [2018-11-07 00:52:53,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:36" (2/3) ... [2018-11-07 00:52:53,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a6ac1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:53, skipping insertion in model container [2018-11-07 00:52:53,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:53" (3/3) ... [2018-11-07 00:52:53,463 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label26_false-unreach-call.c [2018-11-07 00:52:53,473 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:52:53,483 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:52:53,499 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:52:53,547 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:52:53,547 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:52:53,548 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:52:53,548 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:52:53,548 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:52:53,548 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:52:53,548 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:52:53,548 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:52:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 00:52:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-07 00:52:53,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:52:53,622 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] [2018-11-07 00:52:53,625 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:52:53,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:52:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash 709193730, now seen corresponding path program 1 times [2018-11-07 00:52:53,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:52:53,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:52:53,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:52:53,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:52:53,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:52:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:52:54,078 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:52:54,205 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 00:52:54,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:52:54,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:52:54,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:52:54,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:52:54,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:52:54,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:52:54,264 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 00:53:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:53:07,774 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-11-07 00:53:07,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:53:07,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-11-07 00:53:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:53:07,828 INFO L225 Difference]: With dead ends: 5042 [2018-11-07 00:53:07,828 INFO L226 Difference]: Without dead ends: 3262 [2018-11-07 00:53:07,842 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:53:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-11-07 00:53:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-11-07 00:53:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-11-07 00:53:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-11-07 00:53:08,066 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 33 [2018-11-07 00:53:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:53:08,067 INFO L480 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-11-07 00:53:08,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:53:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-11-07 00:53:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 00:53:08,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:53:08,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:08,077 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:53:08,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:53:08,077 INFO L82 PathProgramCache]: Analyzing trace with hash 160362912, now seen corresponding path program 1 times [2018-11-07 00:53:08,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:53:08,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:08,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:53:08,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:08,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:53:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:53:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:53:08,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:53:08,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:53:08,582 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:53:08,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:53:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:53:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:53:08,585 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-11-07 00:53:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:53:28,399 INFO L93 Difference]: Finished difference Result 9608 states and 17975 transitions. [2018-11-07 00:53:28,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:53:28,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-11-07 00:53:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:53:28,441 INFO L225 Difference]: With dead ends: 9608 [2018-11-07 00:53:28,441 INFO L226 Difference]: Without dead ends: 6400 [2018-11-07 00:53:28,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:53:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2018-11-07 00:53:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6337. [2018-11-07 00:53:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2018-11-07 00:53:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 10076 transitions. [2018-11-07 00:53:28,658 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 10076 transitions. Word has length 133 [2018-11-07 00:53:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:53:28,659 INFO L480 AbstractCegarLoop]: Abstraction has 6337 states and 10076 transitions. [2018-11-07 00:53:28,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:53:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 10076 transitions. [2018-11-07 00:53:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 00:53:28,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:53:28,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:28,664 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:53:28,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:53:28,665 INFO L82 PathProgramCache]: Analyzing trace with hash 738882868, now seen corresponding path program 1 times [2018-11-07 00:53:28,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:53:28,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:28,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:53:28,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:28,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:53:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:53:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:53:28,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:53:28,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:53:28,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:53:28,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:53:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:53:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:53:28,943 INFO L87 Difference]: Start difference. First operand 6337 states and 10076 transitions. Second operand 6 states. [2018-11-07 00:53:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:53:44,660 INFO L93 Difference]: Finished difference Result 19001 states and 30529 transitions. [2018-11-07 00:53:44,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:53:44,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 00:53:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:53:44,721 INFO L225 Difference]: With dead ends: 19001 [2018-11-07 00:53:44,721 INFO L226 Difference]: Without dead ends: 12670 [2018-11-07 00:53:44,740 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:53:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12670 states. [2018-11-07 00:53:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12670 to 12414. [2018-11-07 00:53:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2018-11-07 00:53:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 18890 transitions. [2018-11-07 00:53:45,054 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 18890 transitions. Word has length 143 [2018-11-07 00:53:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:53:45,055 INFO L480 AbstractCegarLoop]: Abstraction has 12414 states and 18890 transitions. [2018-11-07 00:53:45,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:53:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 18890 transitions. [2018-11-07 00:53:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-07 00:53:45,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:53:45,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:45,059 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:53:45,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:53:45,060 INFO L82 PathProgramCache]: Analyzing trace with hash -587070887, now seen corresponding path program 1 times [2018-11-07 00:53:45,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:53:45,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:45,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:53:45,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:53:45,061 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:53:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:53:45,411 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:53:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:53:45,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:53:45,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:53:45,829 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:53:45,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:53:45,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:53:45,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:53:45,833 INFO L87 Difference]: Start difference. First operand 12414 states and 18890 transitions. Second operand 6 states. [2018-11-07 00:54:00,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:54:00,357 INFO L93 Difference]: Finished difference Result 36974 states and 57795 transitions. [2018-11-07 00:54:00,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:54:00,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2018-11-07 00:54:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:54:00,482 INFO L225 Difference]: With dead ends: 36974 [2018-11-07 00:54:00,482 INFO L226 Difference]: Without dead ends: 24566 [2018-11-07 00:54:00,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:54:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2018-11-07 00:54:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24168. [2018-11-07 00:54:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24168 states. [2018-11-07 00:54:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24168 states to 24168 states and 36341 transitions. [2018-11-07 00:54:01,024 INFO L78 Accepts]: Start accepts. Automaton has 24168 states and 36341 transitions. Word has length 198 [2018-11-07 00:54:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:54:01,024 INFO L480 AbstractCegarLoop]: Abstraction has 24168 states and 36341 transitions. [2018-11-07 00:54:01,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:54:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 24168 states and 36341 transitions. [2018-11-07 00:54:01,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-07 00:54:01,030 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:54:01,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:54:01,031 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:54:01,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:01,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1436298043, now seen corresponding path program 1 times [2018-11-07 00:54:01,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:54:01,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:01,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:54:01,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:01,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:54:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:54:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:54:01,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:54:01,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 00:54:01,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:54:01,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:54:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:54:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:54:01,884 INFO L87 Difference]: Start difference. First operand 24168 states and 36341 transitions. Second operand 7 states. [2018-11-07 00:54:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:54:31,843 INFO L93 Difference]: Finished difference Result 88826 states and 148889 transitions. [2018-11-07 00:54:31,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:54:31,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-11-07 00:54:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:54:32,151 INFO L225 Difference]: With dead ends: 88826 [2018-11-07 00:54:32,152 INFO L226 Difference]: Without dead ends: 64664 [2018-11-07 00:54:32,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:54:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64664 states. [2018-11-07 00:54:33,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64664 to 63946. [2018-11-07 00:54:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63946 states. [2018-11-07 00:54:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63946 states to 63946 states and 92988 transitions. [2018-11-07 00:54:34,101 INFO L78 Accepts]: Start accepts. Automaton has 63946 states and 92988 transitions. Word has length 250 [2018-11-07 00:54:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:54:34,102 INFO L480 AbstractCegarLoop]: Abstraction has 63946 states and 92988 transitions. [2018-11-07 00:54:34,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:54:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 63946 states and 92988 transitions. [2018-11-07 00:54:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-11-07 00:54:34,119 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:54:34,119 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:54:34,119 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:54:34,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1489751987, now seen corresponding path program 1 times [2018-11-07 00:54:34,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:54:34,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:34,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:54:34,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:54:34,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:54:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:54:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:54:34,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:54:34,769 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:54:34,770 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-11-07 00:54:34,773 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5390], [5392], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 00:54:34,879 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:54:34,879 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:54:43,071 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:54:43,917 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:54:43,919 INFO L272 AbstractInterpreter]: Visited 220 different actions 220 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:54:43,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:54:43,966 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:54:49,460 INFO L227 lantSequenceWeakener]: Weakened 452 states. On average, predicates are now at 75.15% of their original sizes. [2018-11-07 00:54:49,461 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:54:50,053 INFO L415 sIntCurrentIteration]: We unified 461 AI predicates to 461 [2018-11-07 00:54:50,053 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:54:50,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:54:50,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:54:50,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:54:50,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:54:50,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:54:50,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:54:50,061 INFO L87 Difference]: Start difference. First operand 63946 states and 92988 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown