java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:19:03,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:19:03,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:19:03,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:19:03,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:19:03,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:19:03,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:19:03,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:19:03,152 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:19:03,154 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:19:03,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:19:03,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:19:03,158 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:19:03,159 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:19:03,161 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:19:03,162 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:19:03,163 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:19:03,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:19:03,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:19:03,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:19:03,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:19:03,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:19:03,184 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:19:03,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:19:03,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:19:03,187 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:19:03,188 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:19:03,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:19:03,189 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:19:03,193 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:19:03,193 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:19:03,194 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:19:03,194 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:19:03,194 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:19:03,196 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:19:03,197 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:19:03,197 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:19:03,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:19:03,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:19:03,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:19:03,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:19:03,223 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:19:03,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:19:03,223 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:19:03,223 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:19:03,224 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:19:03,224 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:19:03,224 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:19:03,224 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:19:03,225 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:19:03,225 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:19:03,225 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:19:03,225 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:19:03,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:19:03,226 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:19:03,226 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:19:03,226 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:19:03,226 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:19:03,226 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:19:03,227 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:19:03,227 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:19:03,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:19:03,227 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:19:03,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:19:03,228 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:19:03,228 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:19:03,228 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:19:03,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:19:03,228 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:19:03,228 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:19:03,229 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:19:03,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:19:03,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:19:03,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:19:03,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:19:03,292 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:19:03,293 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-10-27 14:19:03,356 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c02b35f8/26196cbe92734db6b5089a725be484b4/FLAG6e8c9b121 [2018-10-27 14:19:04,196 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:19:04,197 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-10-27 14:19:04,235 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c02b35f8/26196cbe92734db6b5089a725be484b4/FLAG6e8c9b121 [2018-10-27 14:19:04,254 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c02b35f8/26196cbe92734db6b5089a725be484b4 [2018-10-27 14:19:04,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:19:04,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:19:04,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:19:04,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:19:04,276 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:19:04,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:19:04" (1/1) ... [2018-10-27 14:19:04,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f3d0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:04, skipping insertion in model container [2018-10-27 14:19:04,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:19:04" (1/1) ... [2018-10-27 14:19:04,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:19:04,495 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:19:05,954 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:19:05,958 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:19:06,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:19:06,744 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:19:06,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06 WrapperNode [2018-10-27 14:19:06,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:19:06,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:19:06,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:19:06,747 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:19:06,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:06,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:19:07,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:19:07,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:19:07,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:19:07,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... [2018-10-27 14:19:07,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:19:07,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:19:07,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:19:07,741 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:19:07,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 14:19:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:19:07,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:19:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:19:07,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:19:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:19:07,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:19:07,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:19:07,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:19:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:19:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:19:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:19:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:19:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:19:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:19:19,901 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:19:19,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:19:19 BoogieIcfgContainer [2018-10-27 14:19:19,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:19:19,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:19:19,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:19:19,906 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:19:19,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:19:04" (1/3) ... [2018-10-27 14:19:19,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3466a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:19:19, skipping insertion in model container [2018-10-27 14:19:19,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:19:06" (2/3) ... [2018-10-27 14:19:19,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3466a226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:19:19, skipping insertion in model container [2018-10-27 14:19:19,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:19:19" (3/3) ... [2018-10-27 14:19:19,910 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42_true-unreach-call.c [2018-10-27 14:19:19,921 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:19:19,936 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:19:19,954 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:19:20,003 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:19:20,003 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:19:20,003 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:19:20,003 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:19:20,004 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:19:20,004 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:19:20,004 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:19:20,004 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:19:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 14:19:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-27 14:19:20,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:19:20,059 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:19:20,061 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:19:20,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:20,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1770921932, now seen corresponding path program 1 times [2018-10-27 14:19:20,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:19:20,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:20,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:19:20,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:20,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:19:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:19:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:19:20,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:19:20,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:19:20,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:19:20,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:19:20,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:19:20,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:19:20,736 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 14:19:36,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:19:36,773 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-10-27 14:19:36,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:19:36,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-10-27 14:19:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:19:36,827 INFO L225 Difference]: With dead ends: 4105 [2018-10-27 14:19:36,828 INFO L226 Difference]: Without dead ends: 2979 [2018-10-27 14:19:36,845 INFO L605 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 [2018-10-27 14:19:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-10-27 14:19:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-10-27 14:19:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-10-27 14:19:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-10-27 14:19:37,072 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 72 [2018-10-27 14:19:37,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:19:37,072 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-10-27 14:19:37,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:19:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-10-27 14:19:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 14:19:37,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:19:37,095 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:19:37,095 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:19:37,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:37,095 INFO L82 PathProgramCache]: Analyzing trace with hash -646362735, now seen corresponding path program 1 times [2018-10-27 14:19:37,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:19:37,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:37,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:19:37,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:37,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:19:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:19:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:19:37,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:19:37,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:19:37,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:19:37,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:19:37,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:19:37,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:19:37,582 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-10-27 14:19:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:19:50,662 INFO L93 Difference]: Finished difference Result 8249 states and 15059 transitions. [2018-10-27 14:19:50,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:19:50,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-27 14:19:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:19:50,698 INFO L225 Difference]: With dead ends: 8249 [2018-10-27 14:19:50,699 INFO L226 Difference]: Without dead ends: 5406 [2018-10-27 14:19:50,710 INFO L605 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 [2018-10-27 14:19:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2018-10-27 14:19:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 5361. [2018-10-27 14:19:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5361 states. [2018-10-27 14:19:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8751 transitions. [2018-10-27 14:19:50,856 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8751 transitions. Word has length 143 [2018-10-27 14:19:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:19:50,857 INFO L481 AbstractCegarLoop]: Abstraction has 5361 states and 8751 transitions. [2018-10-27 14:19:50,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:19:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8751 transitions. [2018-10-27 14:19:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-27 14:19:50,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:19:50,862 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:19:50,862 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:19:50,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:50,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1327608448, now seen corresponding path program 1 times [2018-10-27 14:19:50,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:19:50,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:50,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:19:50,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:50,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:19:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:19:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:19:51,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:19:51,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:19:51,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:19:51,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:19:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:19:51,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:19:51,237 INFO L87 Difference]: Start difference. First operand 5361 states and 8751 transitions. Second operand 6 states. [2018-10-27 14:20:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:20:05,897 INFO L93 Difference]: Finished difference Result 18313 states and 30872 transitions. [2018-10-27 14:20:05,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:20:05,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-27 14:20:05,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:20:05,980 INFO L225 Difference]: With dead ends: 18313 [2018-10-27 14:20:05,980 INFO L226 Difference]: Without dead ends: 12958 [2018-10-27 14:20:06,024 INFO L605 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 [2018-10-27 14:20:06,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12958 states. [2018-10-27 14:20:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12958 to 12892. [2018-10-27 14:20:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12892 states. [2018-10-27 14:20:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12892 states to 12892 states and 19349 transitions. [2018-10-27 14:20:06,609 INFO L78 Accepts]: Start accepts. Automaton has 12892 states and 19349 transitions. Word has length 146 [2018-10-27 14:20:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:20:06,610 INFO L481 AbstractCegarLoop]: Abstraction has 12892 states and 19349 transitions. [2018-10-27 14:20:06,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:20:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 12892 states and 19349 transitions. [2018-10-27 14:20:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-27 14:20:06,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:20:06,621 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 14:20:06,622 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:20:06,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:20:06,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2095905532, now seen corresponding path program 1 times [2018-10-27 14:20:06,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:20:06,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:06,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:20:06,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:20:06,624 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:20:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:20:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:20:06,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:20:06,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:20:06,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-27 14:20:06,931 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], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3091], [3099], [3103], [3105], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3171], [3176], [3178], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 14:20:06,975 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:20:06,975 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:20:07,624 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:20:07,626 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:20:07,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:20:07,658 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:20:08,468 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 72.05% of their original sizes. [2018-10-27 14:20:08,468 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:20:08,865 INFO L415 sIntCurrentIteration]: We unified 226 AI predicates to 226 [2018-10-27 14:20:08,866 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:20:08,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:20:08,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-10-27 14:20:08,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:20:08,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 14:20:08,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 14:20:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:20:08,869 INFO L87 Difference]: Start difference. First operand 12892 states and 19349 transitions. Second operand 9 states. [2018-10-27 14:20:13,409 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown