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/Problem12_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:03:36,192 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:03:36,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:03:36,211 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:03:36,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:03:36,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:03:36,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:03:36,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:03:36,217 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:03:36,218 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:03:36,218 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:03:36,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:03:36,220 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:03:36,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:03:36,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:03:36,223 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:03:36,224 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:03:36,225 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:03:36,227 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:03:36,229 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:03:36,230 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:03:36,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:03:36,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:03:36,234 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:03:36,234 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:03:36,235 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:03:36,236 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:03:36,237 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:03:36,238 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:03:36,239 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:03:36,239 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:03:36,240 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:03:36,240 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:03:36,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:03:36,242 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:03:36,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:03:36,243 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 00:03:36,259 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:03:36,259 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:03:36,260 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:03:36,260 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:03:36,260 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:03:36,261 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:03:36,261 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:03:36,261 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:03:36,261 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:03:36,261 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:03:36,262 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:03:36,262 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:03:36,262 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:03:36,263 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:03:36,263 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:03:36,263 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:03:36,263 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:03:36,263 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:03:36,264 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:03:36,264 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:03:36,264 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:03:36,264 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:03:36,264 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:03:36,265 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:03:36,265 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:03:36,265 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:03:36,265 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:03:36,265 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:03:36,266 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:03:36,266 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:03:36,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:03:36,266 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:03:36,266 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:03:36,267 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:03:36,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:03:36,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:03:36,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:03:36,328 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:03:36,328 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:03:36,329 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c [2018-11-07 00:03:36,390 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec6664a1/09d21200b0db4439a2a0a6e8f745c39b/FLAG9325c7710 [2018-11-07 00:03:37,178 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:03:37,179 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c [2018-11-07 00:03:37,216 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec6664a1/09d21200b0db4439a2a0a6e8f745c39b/FLAG9325c7710 [2018-11-07 00:03:37,237 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ec6664a1/09d21200b0db4439a2a0a6e8f745c39b [2018-11-07 00:03:37,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:03:37,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:03:37,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:03:37,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:03:37,262 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:03:37,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:03:37" (1/1) ... [2018-11-07 00:03:37,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:37, skipping insertion in model container [2018-11-07 00:03:37,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:03:37" (1/1) ... [2018-11-07 00:03:37,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:03:37,458 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:03:38,852 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:03:38,857 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:03:39,412 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:03:39,446 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:03:39,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39 WrapperNode [2018-11-07 00:03:39,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:03:39,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:03:39,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:03:39,449 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:03:39,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:39,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:39,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:03:39,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:03:39,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:03:39,789 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:03:39,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:39,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:39,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:39,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:39,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:40,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:40,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (1/1) ... [2018-11-07 00:03:40,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:03:40,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:03:40,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:03:40,079 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:03:40,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (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 00:03:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:03:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:03:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:03:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:03:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:03:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:03:40,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:03:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:03:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:03:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:03:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:03:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:03:40,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:03:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:03:40,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:03:50,717 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:03:50,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:03:50 BoogieIcfgContainer [2018-11-07 00:03:50,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:03:50,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:03:50,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:03:50,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:03:50,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:03:37" (1/3) ... [2018-11-07 00:03:50,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:03:50, skipping insertion in model container [2018-11-07 00:03:50,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:03:39" (2/3) ... [2018-11-07 00:03:50,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:03:50, skipping insertion in model container [2018-11-07 00:03:50,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:03:50" (3/3) ... [2018-11-07 00:03:50,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label13_false-unreach-call.c [2018-11-07 00:03:50,737 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:03:50,751 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:03:50,769 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:03:50,815 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:03:50,815 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:03:50,815 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:03:50,815 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:03:50,815 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:03:50,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:03:50,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:03:50,816 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:03:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 00:03:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-07 00:03:50,877 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:03:50,878 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] [2018-11-07 00:03:50,880 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:03:50,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:03:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1319252181, now seen corresponding path program 1 times [2018-11-07 00:03:50,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:03:50,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:03:50,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:03:50,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:03:50,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:03:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:03:51,367 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:03:51,468 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 00:03:51,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:03:51,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:03:51,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:03:51,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:03:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:03:51,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:03:51,498 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 00:03:59,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:03:59,110 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 00:03:59,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:03:59,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-07 00:03:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:03:59,149 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 00:03:59,149 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 00:03:59,160 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 00:03:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 00:03:59,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 00:03:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 00:03:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 00:03:59,352 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 35 [2018-11-07 00:03:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:03:59,353 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 00:03:59,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:03:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 00:03:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 00:03:59,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:03:59,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:59,367 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:03:59,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:03:59,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1587812788, now seen corresponding path program 1 times [2018-11-07 00:03:59,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:03:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:03:59,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:03:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:03:59,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:03:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:03:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:03:59,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:03:59,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:03:59,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:03:59,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:03:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:03:59,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:03:59,812 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 00:04:14,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:04:14,332 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 00:04:14,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:04:14,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 00:04:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:04:14,371 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 00:04:14,371 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 00:04:14,382 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:04:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 00:04:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 00:04:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 00:04:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 00:04:14,543 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 113 [2018-11-07 00:04:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:04:14,543 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 00:04:14,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:04:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 00:04:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 00:04:14,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:04:14,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:14,551 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:04:14,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:04:14,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1750714015, now seen corresponding path program 1 times [2018-11-07 00:04:14,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:04:14,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:14,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:04:14,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:14,553 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:04:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:04:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:04:14,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:04:14,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:04:14,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:04:14,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:04:14,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:04:14,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:04:14,811 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 00:04:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:04:22,622 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 00:04:22,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:04:22,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-07 00:04:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:04:22,681 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 00:04:22,681 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 00:04:22,695 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:04:22,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 00:04:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 00:04:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 00:04:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 00:04:22,960 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 116 [2018-11-07 00:04:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:04:22,961 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 00:04:22,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:04:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 00:04:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 00:04:22,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:04:22,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:22,965 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:04:22,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:04:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash 716449312, now seen corresponding path program 1 times [2018-11-07 00:04:22,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:04:22,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:22,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:04:22,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:22,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:04:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:04:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:04:23,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:04:23,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:04:23,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:04:23,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:04:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:04:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:04:23,235 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 00:04:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:04:39,136 INFO L93 Difference]: Finished difference Result 38548 states and 63646 transitions. [2018-11-07 00:04:39,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 00:04:39,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 00:04:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:04:39,311 INFO L225 Difference]: With dead ends: 38548 [2018-11-07 00:04:39,311 INFO L226 Difference]: Without dead ends: 29027 [2018-11-07 00:04:39,405 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:04:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29027 states. [2018-11-07 00:04:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29027 to 28824. [2018-11-07 00:04:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28824 states. [2018-11-07 00:04:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28824 states to 28824 states and 42272 transitions. [2018-11-07 00:04:40,314 INFO L78 Accepts]: Start accepts. Automaton has 28824 states and 42272 transitions. Word has length 139 [2018-11-07 00:04:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:04:40,316 INFO L480 AbstractCegarLoop]: Abstraction has 28824 states and 42272 transitions. [2018-11-07 00:04:40,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:04:40,316 INFO L276 IsEmpty]: Start isEmpty. Operand 28824 states and 42272 transitions. [2018-11-07 00:04:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 00:04:40,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:04:40,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:40,319 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:04:40,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:04:40,320 INFO L82 PathProgramCache]: Analyzing trace with hash 72543737, now seen corresponding path program 1 times [2018-11-07 00:04:40,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:04:40,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:40,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:04:40,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:40,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:04:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:04:40,631 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:04:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:04:41,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:04:41,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:04:41,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:04:41,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:04:41,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:04:41,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:04:41,036 INFO L87 Difference]: Start difference. First operand 28824 states and 42272 transitions. Second operand 6 states. [2018-11-07 00:04:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:04:50,859 INFO L93 Difference]: Finished difference Result 77165 states and 121238 transitions. [2018-11-07 00:04:50,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:04:50,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-07 00:04:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:04:51,121 INFO L225 Difference]: With dead ends: 77165 [2018-11-07 00:04:51,122 INFO L226 Difference]: Without dead ends: 48347 [2018-11-07 00:04:51,249 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:04:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48347 states. [2018-11-07 00:04:52,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48347 to 48115. [2018-11-07 00:04:52,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48115 states. [2018-11-07 00:04:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48115 states to 48115 states and 68182 transitions. [2018-11-07 00:04:52,835 INFO L78 Accepts]: Start accepts. Automaton has 48115 states and 68182 transitions. Word has length 160 [2018-11-07 00:04:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:04:52,837 INFO L480 AbstractCegarLoop]: Abstraction has 48115 states and 68182 transitions. [2018-11-07 00:04:52,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:04:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 48115 states and 68182 transitions. [2018-11-07 00:04:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 00:04:52,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:04:52,848 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:04:52,848 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:04:52,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:04:52,849 INFO L82 PathProgramCache]: Analyzing trace with hash -737174824, now seen corresponding path program 1 times [2018-11-07 00:04:52,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:04:52,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:52,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:04:52,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:04:52,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:04:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:04:53,138 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:04:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 56 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:04:53,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:04:53,491 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:04:53,492 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-07 00:04:53,495 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], [2047], [2049], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 00:04:53,613 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:04:53,613 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:04:57,141 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:04:58,522 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:04:58,525 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:04:58,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:04:58,583 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:05:01,008 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 75.35% of their original sizes. [2018-11-07 00:05:01,009 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:05:01,589 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-11-07 00:05:01,589 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:05:01,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:05:01,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 00:05:01,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:01,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:05:01,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:05:01,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:05:01,591 INFO L87 Difference]: Start difference. First operand 48115 states and 68182 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown