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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:42:40,164 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:42:40,166 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:42:40,181 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:42:40,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:42:40,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:42:40,184 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:42:40,185 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:42:40,187 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:42:40,188 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:42:40,189 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:42:40,189 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:42:40,190 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:42:40,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:42:40,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:42:40,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:42:40,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:42:40,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:42:40,198 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:42:40,203 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:42:40,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:42:40,208 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:42:40,210 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:42:40,210 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:42:40,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:42:40,211 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:42:40,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:42:40,213 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:42:40,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:42:40,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:42:40,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:42:40,215 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:42:40,215 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:42:40,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:42:40,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:42:40,217 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:42:40,218 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:42:40,233 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:42:40,233 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:42:40,234 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:42:40,234 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:42:40,234 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:42:40,234 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:42:40,235 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:42:40,235 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:42:40,235 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:42:40,235 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:42:40,235 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:42:40,236 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:42:40,236 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:42:40,236 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:42:40,237 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:42:40,237 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:42:40,237 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:42:40,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:42:40,237 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:42:40,238 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:42:40,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:42:40,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:42:40,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:42:40,238 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:42:40,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:42:40,239 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:42:40,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:42:40,239 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:42:40,239 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:42:40,239 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:42:40,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:42:40,240 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:42:40,240 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:42:40,240 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:42:40,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:42:40,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:42:40,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:42:40,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:42:40,304 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:42:40,305 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c [2018-10-24 18:42:40,371 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c4acea13/696f40a821fb481aa0b8712fef171b25/FLAG6b39d0373 [2018-10-24 18:42:41,080 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:42:41,081 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label03_false-unreach-call.c [2018-10-24 18:42:41,106 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c4acea13/696f40a821fb481aa0b8712fef171b25/FLAG6b39d0373 [2018-10-24 18:42:41,126 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c4acea13/696f40a821fb481aa0b8712fef171b25 [2018-10-24 18:42:41,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:42:41,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:42:41,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:42:41,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:42:41,146 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:42:41,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:42:41" (1/1) ... [2018-10-24 18:42:41,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:41, skipping insertion in model container [2018-10-24 18:42:41,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:42:41" (1/1) ... [2018-10-24 18:42:41,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:42:41,266 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:42:42,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:42:42,018 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:42:42,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:42:42,302 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:42:42,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42 WrapperNode [2018-10-24 18:42:42,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:42:42,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:42:42,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:42:42,304 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:42:42,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:42:42,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:42:42,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:42:42,634 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:42:42,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (1/1) ... [2018-10-24 18:42:42,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:42:42,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:42:42,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:42:42,793 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:42:42,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (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 [2018-10-24 18:42:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:42:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:42:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:42:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:42:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:42:42,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:42:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:42:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:42:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:42:42,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:42:48,665 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:42:48,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:42:48 BoogieIcfgContainer [2018-10-24 18:42:48,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:42:48,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:42:48,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:42:48,674 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:42:48,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:42:41" (1/3) ... [2018-10-24 18:42:48,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cb6a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:42:48, skipping insertion in model container [2018-10-24 18:42:48,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:42" (2/3) ... [2018-10-24 18:42:48,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40cb6a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:42:48, skipping insertion in model container [2018-10-24 18:42:48,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:42:48" (3/3) ... [2018-10-24 18:42:48,678 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label03_false-unreach-call.c [2018-10-24 18:42:48,689 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:42:48,698 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:42:48,716 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:42:48,758 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:42:48,758 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:42:48,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:42:48,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:42:48,759 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:42:48,759 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:42:48,759 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:42:48,759 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:42:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:42:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 18:42:48,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:48,800 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:42:48,802 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:48,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:48,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2114670117, now seen corresponding path program 1 times [2018-10-24 18:42:48,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:48,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:48,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:48,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:48,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:49,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:42:49,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:42:49,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:49,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:42:49,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:42:49,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:42:49,220 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:42:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:42:54,166 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:42:54,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:42:54,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-24 18:42:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:42:54,199 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:42:54,199 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:42:54,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:42:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:42:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:42:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:42:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-10-24 18:42:54,313 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 13 [2018-10-24 18:42:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:42:54,313 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-10-24 18:42:54,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:42:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-10-24 18:42:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 18:42:54,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:42:54,319 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:42:54,319 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:42:54,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:42:54,320 INFO L82 PathProgramCache]: Analyzing trace with hash -631689799, now seen corresponding path program 1 times [2018-10-24 18:42:54,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:42:54,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:54,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:42:54,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:42:54,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:42:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:42:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:42:54,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:42:54,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:42:54,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:42:54,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:42:54,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:42:54,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:42:54,671 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-10-24 18:43:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:03,709 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-10-24 18:43:03,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:03,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2018-10-24 18:43:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:03,739 INFO L225 Difference]: With dead ends: 2846 [2018-10-24 18:43:03,740 INFO L226 Difference]: Without dead ends: 2108 [2018-10-24 18:43:03,748 INFO L605 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 [2018-10-24 18:43:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-10-24 18:43:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-10-24 18:43:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-10-24 18:43:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-10-24 18:43:03,846 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 86 [2018-10-24 18:43:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:03,847 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-10-24 18:43:03,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:03,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-10-24 18:43:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 18:43:03,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:03,858 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:03,859 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:03,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1047339596, now seen corresponding path program 1 times [2018-10-24 18:43:03,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:03,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:03,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:03,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:03,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:04,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:04,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:04,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:04,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:04,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:04,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:04,167 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-10-24 18:43:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:11,143 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-10-24 18:43:11,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:11,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 18:43:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:11,169 INFO L225 Difference]: With dead ends: 5549 [2018-10-24 18:43:11,170 INFO L226 Difference]: Without dead ends: 3465 [2018-10-24 18:43:11,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:43:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-10-24 18:43:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-10-24 18:43:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-10-24 18:43:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-10-24 18:43:11,283 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 115 [2018-10-24 18:43:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:11,283 INFO L481 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-10-24 18:43:11,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-10-24 18:43:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 18:43:11,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:11,288 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:11,288 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:11,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:11,289 INFO L82 PathProgramCache]: Analyzing trace with hash -306297911, now seen corresponding path program 1 times [2018-10-24 18:43:11,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:11,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:11,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:11,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:11,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:11,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:11,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:11,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:11,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:11,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:11,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:11,588 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 6 states. [2018-10-24 18:43:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:18,797 INFO L93 Difference]: Finished difference Result 8911 states and 13439 transitions. [2018-10-24 18:43:18,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:18,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-24 18:43:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:18,829 INFO L225 Difference]: With dead ends: 8911 [2018-10-24 18:43:18,830 INFO L226 Difference]: Without dead ends: 5484 [2018-10-24 18:43:18,850 INFO L605 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 [2018-10-24 18:43:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2018-10-24 18:43:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5455. [2018-10-24 18:43:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5455 states. [2018-10-24 18:43:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 7720 transitions. [2018-10-24 18:43:19,081 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 7720 transitions. Word has length 158 [2018-10-24 18:43:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:19,083 INFO L481 AbstractCegarLoop]: Abstraction has 5455 states and 7720 transitions. [2018-10-24 18:43:19,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 7720 transitions. [2018-10-24 18:43:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 18:43:19,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:19,090 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:19,091 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:19,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1241846344, now seen corresponding path program 1 times [2018-10-24 18:43:19,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:19,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:19,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:19,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:19,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:19,436 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:43:19,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:19,684 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:43:19,685 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-24 18:43:19,687 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:43:19,776 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:43:19,777 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:43:22,993 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:43:22,995 INFO L272 AbstractInterpreter]: Visited 150 different actions 150 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:43:23,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:23,026 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:43:25,135 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 77.26% of their original sizes. [2018-10-24 18:43:25,135 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:43:25,647 INFO L413 sIntCurrentIteration]: We have 227 unified AI predicates [2018-10-24 18:43:25,647 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:43:25,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:43:25,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 18:43:25,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:25,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:43:25,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:43:25,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:43:25,650 INFO L87 Difference]: Start difference. First operand 5455 states and 7720 transitions. Second operand 8 states. [2018-10-24 18:43:28,607 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:44:03,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:44:03,621 INFO L93 Difference]: Finished difference Result 11244 states and 15945 transitions. [2018-10-24 18:44:03,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:44:03,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2018-10-24 18:44:03,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:44:03,643 INFO L225 Difference]: With dead ends: 11244 [2018-10-24 18:44:03,644 INFO L226 Difference]: Without dead ends: 5795 [2018-10-24 18:44:03,657 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 229 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:44:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2018-10-24 18:44:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5793. [2018-10-24 18:44:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5793 states. [2018-10-24 18:44:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8066 transitions. [2018-10-24 18:44:03,777 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8066 transitions. Word has length 228 [2018-10-24 18:44:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:44:03,778 INFO L481 AbstractCegarLoop]: Abstraction has 5793 states and 8066 transitions. [2018-10-24 18:44:03,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 18:44:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8066 transitions. [2018-10-24 18:44:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 18:44:03,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:44:03,782 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:44:03,783 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:44:03,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:44:03,783 INFO L82 PathProgramCache]: Analyzing trace with hash -524091392, now seen corresponding path program 1 times [2018-10-24 18:44:03,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:44:03,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:44:03,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:44:03,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:44:03,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:44:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:44:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 18:44:04,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:44:04,108 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:44:04,108 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-24 18:44:04,109 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:44:04,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:44:04,125 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:44:15,666 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:44:15,666 INFO L272 AbstractInterpreter]: Visited 247 different actions 488 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:44:15,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:44:15,679 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:44:18,203 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 83.82% of their original sizes. [2018-10-24 18:44:18,204 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:44:26,066 INFO L413 sIntCurrentIteration]: We have 252 unified AI predicates [2018-10-24 18:44:26,066 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:44:26,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:44:26,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-10-24 18:44:26,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:44:26,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 18:44:26,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 18:44:26,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-10-24 18:44:26,069 INFO L87 Difference]: Start difference. First operand 5793 states and 8066 transitions. Second operand 17 states. [2018-10-24 18:44:59,854 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:46:38,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 18:46:38,982 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:46:38,987 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:46:38,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:46:38 BoogieIcfgContainer [2018-10-24 18:46:38,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:46:38,989 INFO L168 Benchmark]: Toolchain (without parser) took 237849.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -302.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 18:46:38,990 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 18:46:38,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1161.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:38,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 329.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:38,992 INFO L168 Benchmark]: Boogie Preprocessor took 158.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:38,993 INFO L168 Benchmark]: RCFGBuilder took 5874.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:38,994 INFO L168 Benchmark]: TraceAbstraction took 230320.00 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 200.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:46:38,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1161.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 329.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5874.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230320.00 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 200.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 25). Cancelled while BasicCegarLoop was constructing difference of abstraction (5793states) and FLOYD_HOARE automaton (currently 16 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (948 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 230.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 199.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 968 SDtfs, 7829 SDslu, 692 SDs, 0 SdLazy, 12037 SolverSat, 3646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 523 GetRequests, 466 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5793occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959645699071132 AbsIntWeakeningRatio, 0.09603340292275574 AbsIntAvgWeakeningVarsNumRemoved, 537.3340292275574 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 853 NumberOfCodeBlocks, 853 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 598090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 39/106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown