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/Problem11_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:06:06,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:06:06,998 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:06:07,014 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:06:07,014 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:06:07,015 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:06:07,017 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:06:07,019 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:06:07,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:06:07,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:06:07,022 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:06:07,023 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:06:07,024 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:06:07,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:06:07,029 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:06:07,030 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:06:07,031 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:06:07,036 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:06:07,040 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:06:07,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:06:07,045 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:06:07,046 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:06:07,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:06:07,049 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:06:07,049 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:06:07,053 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:06:07,054 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:06:07,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:06:07,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:06:07,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:06:07,059 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:06:07,062 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:06:07,062 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:06:07,062 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:06:07,065 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:06:07,066 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:06:07,067 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 21:06:07,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:06:07,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:06:07,084 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:06:07,084 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:06:07,084 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:06:07,084 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:06:07,085 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:06:07,085 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:06:07,085 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:06:07,085 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:06:07,086 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:06:07,086 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:06:07,086 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:06:07,087 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:06:07,087 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:06:07,087 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:06:07,087 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:06:07,087 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:06:07,088 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:06:07,088 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:06:07,088 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:06:07,088 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:06:07,088 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:06:07,089 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:06:07,089 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:06:07,089 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:06:07,089 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:06:07,089 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:06:07,090 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:06:07,090 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:06:07,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:06:07,090 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:06:07,090 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:06:07,091 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:06:07,135 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:06:07,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:06:07,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:06:07,155 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:06:07,155 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:06:07,156 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label07_true-unreach-call.c [2018-10-24 21:06:07,223 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a450c6667/e76c3bd6194340ad85335ae6e457f0ff/FLAG0dbcdbfe0 [2018-10-24 21:06:07,833 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:06:07,835 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label07_true-unreach-call.c [2018-10-24 21:06:07,855 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a450c6667/e76c3bd6194340ad85335ae6e457f0ff/FLAG0dbcdbfe0 [2018-10-24 21:06:07,875 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a450c6667/e76c3bd6194340ad85335ae6e457f0ff [2018-10-24 21:06:07,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:06:07,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:06:07,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:06:07,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:06:07,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:06:07,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:06:07" (1/1) ... [2018-10-24 21:06:07,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:07, skipping insertion in model container [2018-10-24 21:06:07,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:06:07" (1/1) ... [2018-10-24 21:06:07,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:06:08,012 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:06:08,756 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:06:08,762 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:06:08,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:06:08,936 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:06:08,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08 WrapperNode [2018-10-24 21:06:08,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:06:08,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:06:08,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:06:08,938 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:06:08,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:08,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:06:09,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:06:09,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:06:09,223 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:06:09,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (1/1) ... [2018-10-24 21:06:09,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:06:09,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:06:09,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:06:09,379 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:06:09,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (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 21:06:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:06:09,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:06:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:06:09,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:06:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:06:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:06:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:06:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:06:14,197 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:06:14,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:06:14 BoogieIcfgContainer [2018-10-24 21:06:14,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:06:14,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:06:14,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:06:14,203 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:06:14,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:06:07" (1/3) ... [2018-10-24 21:06:14,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e46182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:06:14, skipping insertion in model container [2018-10-24 21:06:14,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:06:08" (2/3) ... [2018-10-24 21:06:14,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e46182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:06:14, skipping insertion in model container [2018-10-24 21:06:14,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:06:14" (3/3) ... [2018-10-24 21:06:14,207 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label07_true-unreach-call.c [2018-10-24 21:06:14,219 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:06:14,229 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:06:14,247 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:06:14,292 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:06:14,292 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:06:14,293 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:06:14,293 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:06:14,293 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:06:14,293 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:06:14,293 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:06:14,294 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:06:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:06:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-24 21:06:14,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:06:14,333 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] [2018-10-24 21:06:14,336 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:06:14,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:14,342 INFO L82 PathProgramCache]: Analyzing trace with hash 816116164, now seen corresponding path program 1 times [2018-10-24 21:06:14,344 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:06:14,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:14,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:14,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:14,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:06:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:14,818 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 21:06:14,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:06:14,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:06:14,821 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:06:14,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:06:14,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:06:14,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:06:14,844 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:06:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:06:18,196 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 21:06:18,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:06:18,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-24 21:06:18,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:06:18,224 INFO L225 Difference]: With dead ends: 985 [2018-10-24 21:06:18,225 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 21:06:18,233 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 [2018-10-24 21:06:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 21:06:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 21:06:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 21:06:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 21:06:18,333 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 30 [2018-10-24 21:06:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:06:18,333 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 21:06:18,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:06:18,334 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 21:06:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 21:06:18,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:06:18,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:18,341 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:06:18,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:18,342 INFO L82 PathProgramCache]: Analyzing trace with hash -348576157, now seen corresponding path program 1 times [2018-10-24 21:06:18,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:06:18,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:18,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:18,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:18,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:06:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:18,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:06:18,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:06:18,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:06:18,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:06:18,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:06:18,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:06:18,681 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 21:06:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:06:24,343 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-10-24 21:06:24,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:06:24,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 21:06:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:06:24,359 INFO L225 Difference]: With dead ends: 2339 [2018-10-24 21:06:24,359 INFO L226 Difference]: Without dead ends: 1659 [2018-10-24 21:06:24,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:06:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-10-24 21:06:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-10-24 21:06:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-10-24 21:06:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-10-24 21:06:24,467 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 111 [2018-10-24 21:06:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:06:24,468 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-10-24 21:06:24,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:06:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-10-24 21:06:24,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 21:06:24,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:06:24,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:24,491 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:06:24,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:24,493 INFO L82 PathProgramCache]: Analyzing trace with hash -786366209, now seen corresponding path program 1 times [2018-10-24 21:06:24,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:06:24,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:24,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:24,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:24,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:06:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:25,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:06:25,446 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:06:25,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2018-10-24 21:06:25,449 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:06:25,528 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:06:25,529 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:06:29,764 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:06:46,239 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:06:46,240 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:06:46,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:46,252 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:06:49,322 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 88.46% of their original sizes. [2018-10-24 21:06:49,324 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:07:50,775 INFO L413 sIntCurrentIteration]: We have 161 unified AI predicates [2018-10-24 21:07:50,776 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:07:50,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:07:50,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-10-24 21:07:50,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:07:50,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:07:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:07:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:07:50,780 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 21:10:24,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:10:24,504 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:10:24,508 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:10:24,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:10:24 BoogieIcfgContainer [2018-10-24 21:10:24,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:10:24,510 INFO L168 Benchmark]: Toolchain (without parser) took 256618.24 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 714.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:10:24,511 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:10:24,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1043.43 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:10:24,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 283.68 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -780.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:10:24,514 INFO L168 Benchmark]: Boogie Preprocessor took 155.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:10:24,514 INFO L168 Benchmark]: RCFGBuilder took 4819.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 180.2 MB). Peak memory consumption was 180.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:10:24,515 INFO L168 Benchmark]: TraceAbstraction took 250310.03 ms. Allocated memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -865.5 MB). Peak memory consumption was 549.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:10:24,520 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1043.43 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 283.68 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -780.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4819.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 180.2 MB). Peak memory consumption was 180.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250310.03 ms. Allocated memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -865.5 MB). Peak memory consumption was 549.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (1642states) and FLOYD_HOARE automaton (currently 17 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (903 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 250.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 162.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 347 SDtfs, 2524 SDslu, 365 SDs, 0 SdLazy, 4151 SolverSat, 669 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 52 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 67.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1642occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9944132242268889 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 1010.5341614906832 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 303 NumberOfCodeBlocks, 303 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 246853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 40/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown