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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:27:42,000 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:27:42,002 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:27:42,014 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:27:42,014 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:27:42,015 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:27:42,017 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:27:42,019 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:27:42,021 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:27:42,022 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:27:42,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:27:42,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:27:42,024 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:27:42,025 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:27:42,026 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:27:42,027 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:27:42,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:27:42,030 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:27:42,032 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:27:42,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:27:42,035 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:27:42,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:27:42,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:27:42,040 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:27:42,040 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:27:42,041 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:27:42,045 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:27:42,046 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:27:42,047 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:27:42,051 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:27:42,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:27:42,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:27:42,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:27:42,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:27:42,055 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:27:42,055 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:27:42,056 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-LIM.epf [2018-11-07 20:27:42,090 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:27:42,090 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:27:42,092 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:27:42,092 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:27:42,092 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:27:42,093 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:27:42,093 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:27:42,093 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:27:42,093 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:27:42,093 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:27:42,094 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:27:42,094 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:27:42,094 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:27:42,095 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:27:42,095 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:27:42,096 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:27:42,096 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:27:42,096 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:27:42,096 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:27:42,096 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:27:42,098 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:27:42,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:27:42,098 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:27:42,098 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:27:42,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:27:42,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:27:42,099 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:27:42,099 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:27:42,099 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:27:42,099 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:27:42,100 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:27:42,100 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:27:42,100 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:27:42,100 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:27:42,100 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:27:42,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:27:42,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:27:42,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:27:42,171 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:27:42,172 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:27:42,173 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-11-07 20:27:42,243 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f63a579/77b42f88cff04989b4e361971555abf7/FLAG7d1c0e9f0 [2018-11-07 20:27:43,084 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:27:43,087 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-11-07 20:27:43,128 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f63a579/77b42f88cff04989b4e361971555abf7/FLAG7d1c0e9f0 [2018-11-07 20:27:43,150 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22f63a579/77b42f88cff04989b4e361971555abf7 [2018-11-07 20:27:43,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:27:43,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:27:43,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:27:43,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:27:43,175 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:27:43,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:43" (1/1) ... [2018-11-07 20:27:43,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:43, skipping insertion in model container [2018-11-07 20:27:43,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:27:43" (1/1) ... [2018-11-07 20:27:43,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:27:43,377 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:27:44,912 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:27:44,919 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:27:45,727 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:27:45,768 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:27:45,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45 WrapperNode [2018-11-07 20:27:45,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:27:45,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:27:45,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:27:45,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:27:45,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:27:46,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:27:46,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:27:46,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:27:46,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (1/1) ... [2018-11-07 20:27:46,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:27:46,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:27:46,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:27:46,536 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:27:46,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (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 20:27:46,604 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:27:46,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:27:46,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:27:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:27:46,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:27:46,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:27:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:27:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:27:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:27:46,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:27:46,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:27:46,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:27:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:27:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:27:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:27:56,210 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:27:56,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:56 BoogieIcfgContainer [2018-11-07 20:27:56,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:27:56,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:27:56,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:27:56,216 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:27:56,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:27:43" (1/3) ... [2018-11-07 20:27:56,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:56, skipping insertion in model container [2018-11-07 20:27:56,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:27:45" (2/3) ... [2018-11-07 20:27:56,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:27:56, skipping insertion in model container [2018-11-07 20:27:56,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:27:56" (3/3) ... [2018-11-07 20:27:56,221 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22_true-unreach-call.c [2018-11-07 20:27:56,233 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:27:56,246 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:27:56,267 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:27:56,333 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:27:56,333 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:27:56,333 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:27:56,333 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:27:56,334 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:27:56,334 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:27:56,334 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:27:56,334 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:27:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 20:27:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 20:27:56,408 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:27:56,410 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] [2018-11-07 20:27:56,412 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:27:56,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:27:56,420 INFO L82 PathProgramCache]: Analyzing trace with hash -380938253, now seen corresponding path program 1 times [2018-11-07 20:27:56,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:27:56,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:56,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:27:56,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:27:56,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:27:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:27:56,974 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 20:27:56,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:27:56,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:27:56,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:27:56,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:27:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:27:57,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:27:57,029 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 20:28:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:11,038 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-11-07 20:28:11,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:28:11,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-07 20:28:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:11,099 INFO L225 Difference]: With dead ends: 4105 [2018-11-07 20:28:11,099 INFO L226 Difference]: Without dead ends: 2979 [2018-11-07 20:28:11,113 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:28:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-11-07 20:28:11,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-11-07 20:28:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-11-07 20:28:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-11-07 20:28:11,319 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 39 [2018-11-07 20:28:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:11,320 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-11-07 20:28:11,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:28:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-11-07 20:28:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 20:28:11,328 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:11,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:11,329 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:11,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:11,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1766897295, now seen corresponding path program 1 times [2018-11-07 20:28:11,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:11,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:11,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:11,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:11,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:28:11,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:28:11,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:28:11,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:11,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:28:11,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:28:11,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:28:11,764 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-11-07 20:28:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:26,912 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-11-07 20:28:26,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:28:26,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-11-07 20:28:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:26,968 INFO L225 Difference]: With dead ends: 10635 [2018-11-07 20:28:26,968 INFO L226 Difference]: Without dead ends: 7792 [2018-11-07 20:28:26,987 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 20:28:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-11-07 20:28:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-11-07 20:28:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-11-07 20:28:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-11-07 20:28:27,190 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 110 [2018-11-07 20:28:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:27,191 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-11-07 20:28:27,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:28:27,191 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-11-07 20:28:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 20:28:27,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:27,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:27,195 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:27,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:27,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1433958942, now seen corresponding path program 1 times [2018-11-07 20:28:27,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:27,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:27,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:27,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:27,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:28:27,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:28:27,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:28:27,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:27,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:28:27,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:28:27,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:28:27,437 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-11-07 20:28:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:38,354 INFO L93 Difference]: Finished difference Result 20526 states and 33998 transitions. [2018-11-07 20:28:38,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:28:38,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 20:28:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:38,430 INFO L225 Difference]: With dead ends: 20526 [2018-11-07 20:28:38,430 INFO L226 Difference]: Without dead ends: 12803 [2018-11-07 20:28:38,467 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 20:28:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2018-11-07 20:28:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12725. [2018-11-07 20:28:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12725 states. [2018-11-07 20:28:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 19312 transitions. [2018-11-07 20:28:38,815 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 19312 transitions. Word has length 113 [2018-11-07 20:28:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:38,816 INFO L480 AbstractCegarLoop]: Abstraction has 12725 states and 19312 transitions. [2018-11-07 20:28:38,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:28:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 19312 transitions. [2018-11-07 20:28:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 20:28:38,820 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:38,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:38,821 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:38,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:38,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1170956786, now seen corresponding path program 1 times [2018-11-07 20:28:38,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:38,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:38,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:38,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:38,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:28:39,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:28:39,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:28:39,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:39,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:28:39,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:28:39,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:28:39,170 INFO L87 Difference]: Start difference. First operand 12725 states and 19312 transitions. Second operand 5 states. [2018-11-07 20:28:48,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:28:48,917 INFO L93 Difference]: Finished difference Result 38404 states and 61833 transitions. [2018-11-07 20:28:48,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:28:48,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-11-07 20:28:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:28:49,039 INFO L225 Difference]: With dead ends: 38404 [2018-11-07 20:28:49,040 INFO L226 Difference]: Without dead ends: 25685 [2018-11-07 20:28:49,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 20:28:49,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25685 states. [2018-11-07 20:28:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25685 to 25392. [2018-11-07 20:28:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25392 states. [2018-11-07 20:28:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25392 states to 25392 states and 37263 transitions. [2018-11-07 20:28:49,745 INFO L78 Accepts]: Start accepts. Automaton has 25392 states and 37263 transitions. Word has length 123 [2018-11-07 20:28:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:28:49,745 INFO L480 AbstractCegarLoop]: Abstraction has 25392 states and 37263 transitions. [2018-11-07 20:28:49,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:28:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 25392 states and 37263 transitions. [2018-11-07 20:28:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 20:28:49,753 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:28:49,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:49,753 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:28:49,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:49,754 INFO L82 PathProgramCache]: Analyzing trace with hash 531830176, now seen corresponding path program 1 times [2018-11-07 20:28:49,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:28:49,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:49,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:28:49,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:28:49,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:28:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:28:50,063 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:28:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:28:50,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:28:50,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:28:50,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-07 20:28:50,350 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2839], [2841], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:28:50,398 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:28:50,398 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:28:51,853 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:28:51,855 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:28:51,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:28:51,902 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:28:52,454 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 72.25% of their original sizes. [2018-11-07 20:28:52,454 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:28:53,722 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-11-07 20:28:53,723 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:28:53,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:28:53,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-11-07 20:28:53,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:28:53,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:28:53,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:28:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:28:53,726 INFO L87 Difference]: Start difference. First operand 25392 states and 37263 transitions. Second operand 17 states. [2018-11-07 20:29:10,814 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:30:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:30:27,064 INFO L93 Difference]: Finished difference Result 52688 states and 77208 transitions. [2018-11-07 20:30:27,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:30:27,065 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 140 [2018-11-07 20:30:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:30:27,142 INFO L225 Difference]: With dead ends: 52688 [2018-11-07 20:30:27,142 INFO L226 Difference]: Without dead ends: 27302 [2018-11-07 20:30:27,196 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 157 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 20:30:27,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27302 states. [2018-11-07 20:30:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27302 to 27297. [2018-11-07 20:30:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27297 states. [2018-11-07 20:30:27,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27297 states to 27297 states and 39223 transitions. [2018-11-07 20:30:27,820 INFO L78 Accepts]: Start accepts. Automaton has 27297 states and 39223 transitions. Word has length 140 [2018-11-07 20:30:27,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:30:27,820 INFO L480 AbstractCegarLoop]: Abstraction has 27297 states and 39223 transitions. [2018-11-07 20:30:27,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:30:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 27297 states and 39223 transitions. [2018-11-07 20:30:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-07 20:30:27,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:30:27,832 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:30:27,832 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:30:27,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:30:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1246367810, now seen corresponding path program 1 times [2018-11-07 20:30:27,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:30:27,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:27,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:30:27,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:27,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:30:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:30:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:30:28,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:30:28,450 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:30:28,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-11-07 20:30:28,451 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2839], [2841], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:30:28,461 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:30:28,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:30:29,502 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:30:29,502 INFO L272 AbstractInterpreter]: Visited 139 different actions 684 times. Merged at 7 different actions 35 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 20:30:29,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:30:29,520 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:30:29,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:30:29,520 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:30:29,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:30:29,536 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:30:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:30:29,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:30:31,003 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-11-07 20:30:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 69 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-07 20:30:32,056 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:30:32,847 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 20:30:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 69 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:30:33,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:30:33,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 19 [2018-11-07 20:30:33,363 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:30:33,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 20:30:33,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 20:30:33,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:30:33,365 INFO L87 Difference]: Start difference. First operand 27297 states and 39223 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 20:31:07,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-11-07 20:31:07,386 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:31:07,392 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:31:07,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:31:07 BoogieIcfgContainer [2018-11-07 20:31:07,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:31:07,394 INFO L168 Benchmark]: Toolchain (without parser) took 204229.70 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 20:31:07,395 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:31:07,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2602.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:31:07,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 414.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:31:07,398 INFO L168 Benchmark]: Boogie Preprocessor took 349.94 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:31:07,399 INFO L168 Benchmark]: RCFGBuilder took 9675.89 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 157.8 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 29.0 MB). Peak memory consumption was 664.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:31:07,400 INFO L168 Benchmark]: TraceAbstraction took 191180.79 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -633.5 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:31:07,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2602.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 414.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 349.94 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9675.89 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 157.8 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 29.0 MB). Peak memory consumption was 664.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191180.79 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.4 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -633.5 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (27297states) and FLOYD_HOARE automaton (currently 64 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (48036 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 191.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 177.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3240 SDtfs, 33956 SDslu, 4114 SDs, 0 SdLazy, 60895 SolverSat, 12340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 823 GetRequests, 691 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27297occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.6s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9969730618667123 AbsIntWeakeningRatio, 0.1510791366906475 AbsIntAvgWeakeningVarsNumRemoved, 13.122302158273381 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 569 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 1065 NumberOfCodeBlocks, 1065 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 2103331 SizeOfPredicates, 10 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 454/623 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown