java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:38:22,136 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:38:22,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:38:22,154 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:38:22,154 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:38:22,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:38:22,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:38:22,159 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:38:22,162 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:38:22,163 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:38:22,164 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:38:22,164 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:38:22,165 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:38:22,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:38:22,171 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:38:22,172 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:38:22,173 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:38:22,177 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:38:22,181 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:38:22,183 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:38:22,187 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:38:22,188 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:38:22,190 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:38:22,191 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:38:22,191 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:38:22,192 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:38:22,193 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:38:22,193 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:38:22,194 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:38:22,195 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:38:22,196 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:38:22,196 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:38:22,196 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:38:22,197 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:38:22,198 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:38:22,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:38:22,198 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:38:22,214 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:38:22,214 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:38:22,215 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:38:22,215 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:38:22,216 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:38:22,216 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:38:22,216 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:38:22,216 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:38:22,216 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:38:22,217 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:38:22,217 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:38:22,217 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:38:22,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:38:22,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:38:22,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:38:22,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:38:22,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:38:22,219 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:38:22,219 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:38:22,219 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:38:22,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:38:22,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:38:22,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:38:22,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:38:22,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:38:22,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:38:22,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:38:22,221 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:38:22,221 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:38:22,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:38:22,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:38:22,221 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:38:22,222 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:38:22,222 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:38:22,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:38:22,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:38:22,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:38:22,289 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:38:22,290 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:38:22,290 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-11-07 14:38:22,353 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de7e6a7f/3289be0c875748e0a52c6610166a720b/FLAG2df0cbef4 [2018-11-07 14:38:23,125 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:38:23,126 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-11-07 14:38:23,161 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de7e6a7f/3289be0c875748e0a52c6610166a720b/FLAG2df0cbef4 [2018-11-07 14:38:23,183 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de7e6a7f/3289be0c875748e0a52c6610166a720b [2018-11-07 14:38:23,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:38:23,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:38:23,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:38:23,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:38:23,207 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:38:23,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:38:23" (1/1) ... [2018-11-07 14:38:23,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be89149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:23, skipping insertion in model container [2018-11-07 14:38:23,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:38:23" (1/1) ... [2018-11-07 14:38:23,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:38:23,389 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:38:24,767 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:38:24,779 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:38:25,424 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:38:25,463 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:38:25,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25 WrapperNode [2018-11-07 14:38:25,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:38:25,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:38:25,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:38:25,465 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:38:25,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:25,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:25,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:38:25,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:38:25,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:38:25,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:38:25,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:25,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:25,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:25,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:26,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:26,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:26,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (1/1) ... [2018-11-07 14:38:26,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:38:26,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:38:26,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:38:26,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:38:26,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (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 14:38:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:38:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:38:26,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:38:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:38:26,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:38:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:38:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:38:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:38:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:38:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:38:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:38:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:38:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:38:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:38:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:38:35,596 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:38:35,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:38:35 BoogieIcfgContainer [2018-11-07 14:38:35,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:38:35,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:38:35,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:38:35,602 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:38:35,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:38:23" (1/3) ... [2018-11-07 14:38:35,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f36387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:38:35, skipping insertion in model container [2018-11-07 14:38:35,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:38:25" (2/3) ... [2018-11-07 14:38:35,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f36387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:38:35, skipping insertion in model container [2018-11-07 14:38:35,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:38:35" (3/3) ... [2018-11-07 14:38:35,606 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15_true-unreach-call.c [2018-11-07 14:38:35,616 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:38:35,626 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:38:35,641 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:38:35,687 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:38:35,687 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:38:35,687 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:38:35,687 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:38:35,687 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:38:35,688 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:38:35,688 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:38:35,688 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:38:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 14:38:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 14:38:35,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:38:35,754 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:38:35,756 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:38:35,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:38:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 394736435, now seen corresponding path program 1 times [2018-11-07 14:38:35,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:38:35,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:35,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:38:35,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:35,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:38:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:38:36,415 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:38:36,588 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 14:38:36,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:38:36,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:38:36,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:38:36,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:38:36,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:38:36,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:38:36,610 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 14:38:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:38:44,379 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 14:38:44,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:38:44,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 14:38:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:38:44,429 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 14:38:44,429 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 14:38:44,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:38:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 14:38:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 14:38:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 14:38:44,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 14:38:44,630 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 61 [2018-11-07 14:38:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:38:44,631 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 14:38:44,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:38:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 14:38:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 14:38:44,643 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:38:44,643 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:38:44,644 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:38:44,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:38:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2085230804, now seen corresponding path program 1 times [2018-11-07 14:38:44,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:38:44,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:44,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:38:44,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:44,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:38:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:38:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:38:45,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:38:45,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:38:45,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:38:45,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:38:45,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:38:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:38:45,122 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 14:38:54,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:38:54,840 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 14:38:54,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:38:54,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 14:38:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:38:54,870 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 14:38:54,870 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 14:38:54,877 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:38:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 14:38:54,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 14:38:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 14:38:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 14:38:55,006 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 135 [2018-11-07 14:38:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:38:55,007 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 14:38:55,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:38:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 14:38:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 14:38:55,012 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:38:55,012 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:38:55,012 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:38:55,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:38:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1091528155, now seen corresponding path program 1 times [2018-11-07 14:38:55,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:38:55,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:55,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:38:55,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:55,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:38:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:38:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:38:55,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:38:55,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:38:55,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:38:55,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:38:55,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:38:55,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:38:55,282 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 14:39:06,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:39:06,782 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 14:39:06,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:39:06,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 14:39:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:39:06,841 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 14:39:06,841 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 14:39:06,856 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:39:06,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 14:39:07,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 14:39:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 14:39:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 14:39:07,113 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 140 [2018-11-07 14:39:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:39:07,114 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 14:39:07,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:39:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 14:39:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 14:39:07,118 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:39:07,118 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:39:07,118 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:39:07,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:39:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash 266956725, now seen corresponding path program 1 times [2018-11-07 14:39:07,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:39:07,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:07,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:39:07,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:07,120 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:39:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:39:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:39:07,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:39:07,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:39:07,340 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:39:07,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:39:07,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:39:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:39:07,341 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 14:39:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:39:16,466 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 14:39:16,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:39:16,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-07 14:39:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:39:16,534 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 14:39:16,534 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 14:39:16,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:39:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 14:39:16,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 14:39:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 14:39:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 14:39:16,949 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 148 [2018-11-07 14:39:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:39:16,950 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 14:39:16,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:39:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 14:39:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 14:39:16,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:39:16,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:39:16,963 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:39:16,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:39:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1611009688, now seen corresponding path program 1 times [2018-11-07 14:39:16,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:39:16,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:16,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:39:16,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:16,965 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:39:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:39:17,293 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:39:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:39:17,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:39:17,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:39:17,598 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:39:17,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:39:17,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:39:17,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:39:17,599 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 14:39:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:39:26,231 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-11-07 14:39:26,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:39:26,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 14:39:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:39:26,338 INFO L225 Difference]: With dead ends: 35956 [2018-11-07 14:39:26,339 INFO L226 Difference]: Without dead ends: 21743 [2018-11-07 14:39:26,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:39:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-11-07 14:39:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-11-07 14:39:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-11-07 14:39:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-11-07 14:39:26,910 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 181 [2018-11-07 14:39:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:39:26,911 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-11-07 14:39:26,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:39:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-11-07 14:39:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 14:39:26,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:39:26,927 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 14:39:26,928 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:39:26,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:39:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash -849945464, now seen corresponding path program 1 times [2018-11-07 14:39:26,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:39:26,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:26,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:39:26,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:26,930 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:39:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:39:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 14:39:27,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:39:27,638 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:39:27,640 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 14:39:27,645 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2255], [2257], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 14:39:27,712 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:39:27,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:39:28,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:39:28,641 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 14:39:28,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:39:28,674 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:39:29,392 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-07 14:39:29,394 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:39:29,684 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 14:39:29,684 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:39:29,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:39:29,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 14:39:29,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:39:29,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:39:29,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:39:29,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:39:29,687 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 11 states. [2018-11-07 14:39:38,849 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown