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/Problem15_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:40:21,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:40:21,891 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:40:21,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:40:21,905 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:40:21,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:40:21,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:40:21,910 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:40:21,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:40:21,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:40:21,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:40:21,920 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:40:21,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:40:21,922 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:40:21,923 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:40:21,923 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:40:21,924 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:40:21,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:40:21,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:40:21,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:40:21,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:40:21,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:40:21,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:40:21,942 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 18:40:21,971 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:40:21,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:40:21,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:40:21,975 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:40:21,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:40:21,979 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:40:21,979 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:40:21,979 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:40:21,979 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:40:21,979 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:40:21,980 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:40:21,980 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:40:21,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:40:21,982 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:40:21,982 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:40:21,982 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:40:21,982 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:40:21,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:40:21,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:40:21,983 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:40:21,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:40:21,983 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:40:21,983 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:40:21,983 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:40:21,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:40:21,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:40:21,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:40:21,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:40:21,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:40:21,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:40:21,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:40:21,986 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:40:21,986 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:40:21,988 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:40:22,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:40:22,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:40:22,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:40:22,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:40:22,056 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:40:22,056 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label38_false-unreach-call.c [2018-10-24 18:40:22,117 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4ede49519/a321588d001048abb6366db69cb83666/FLAG748972d8a [2018-10-24 18:40:22,723 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:40:22,724 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label38_false-unreach-call.c [2018-10-24 18:40:22,743 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4ede49519/a321588d001048abb6366db69cb83666/FLAG748972d8a [2018-10-24 18:40:22,758 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4ede49519/a321588d001048abb6366db69cb83666 [2018-10-24 18:40:22,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:40:22,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:40:22,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:40:22,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:40:22,777 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:40:22,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:40:22" (1/1) ... [2018-10-24 18:40:22,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6628d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:22, skipping insertion in model container [2018-10-24 18:40:22,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:40:22" (1/1) ... [2018-10-24 18:40:22,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:40:22,879 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:40:23,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:40:23,702 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:40:24,001 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:40:24,023 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:40:24,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24 WrapperNode [2018-10-24 18:40:24,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:40:24,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:40:24,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:40:24,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:40:24,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:40:24,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:40:24,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:40:24,391 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:40:24,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (1/1) ... [2018-10-24 18:40:24,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:40:24,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:40:24,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:40:24,647 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:40:24,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (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 18:40:24,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:40:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:40:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:40:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:40:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:40:24,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:40:24,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:40:24,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:40:24,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:40:24,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:40:34,174 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:40:34,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:40:34 BoogieIcfgContainer [2018-10-24 18:40:34,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:40:34,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:40:34,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:40:34,179 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:40:34,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:40:22" (1/3) ... [2018-10-24 18:40:34,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce70ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:40:34, skipping insertion in model container [2018-10-24 18:40:34,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:40:24" (2/3) ... [2018-10-24 18:40:34,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce70ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:40:34, skipping insertion in model container [2018-10-24 18:40:34,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:40:34" (3/3) ... [2018-10-24 18:40:34,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label38_false-unreach-call.c [2018-10-24 18:40:34,192 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:40:34,200 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:40:34,219 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:40:34,263 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:40:34,263 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:40:34,263 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:40:34,263 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:40:34,263 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:40:34,264 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:40:34,264 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:40:34,264 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:40:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 18:40:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 18:40:34,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:34,307 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:40:34,309 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:34,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:34,316 INFO L82 PathProgramCache]: Analyzing trace with hash 751190353, now seen corresponding path program 1 times [2018-10-24 18:40:34,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:34,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:34,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:34,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:34,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:34,837 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 18:40:34,849 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 18:40:34,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:40:34,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:40:34,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:40:34,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:40:34,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:40:34,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:40:34,877 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 18:40:42,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:40:42,831 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-10-24 18:40:42,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:40:42,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-24 18:40:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:40:42,860 INFO L225 Difference]: With dead ends: 1510 [2018-10-24 18:40:42,861 INFO L226 Difference]: Without dead ends: 1066 [2018-10-24 18:40:42,874 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 18:40:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-10-24 18:40:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-10-24 18:40:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-10-24 18:40:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-10-24 18:40:43,009 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 37 [2018-10-24 18:40:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:40:43,009 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-10-24 18:40:43,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:40:43,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-10-24 18:40:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-24 18:40:43,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:43,021 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:40:43,021 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:43,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:43,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1920544059, now seen corresponding path program 1 times [2018-10-24 18:40:43,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:43,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:43,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:43,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:43,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:40:43,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:40:43,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:40:43,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:40:43,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:40:43,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:40:43,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:40:43,304 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-10-24 18:40:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:40:50,608 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-10-24 18:40:50,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:40:50,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2018-10-24 18:40:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:40:50,632 INFO L225 Difference]: With dead ends: 3981 [2018-10-24 18:40:50,633 INFO L226 Difference]: Without dead ends: 2923 [2018-10-24 18:40:50,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:40:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-10-24 18:40:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-10-24 18:40:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-10-24 18:40:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-10-24 18:40:50,771 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 107 [2018-10-24 18:40:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:40:50,772 INFO L481 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-10-24 18:40:50,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:40:50,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-10-24 18:40:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 18:40:50,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:40:50,781 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:40:50,782 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:40:50,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:40:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1746176702, now seen corresponding path program 1 times [2018-10-24 18:40:50,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:40:50,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:50,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:40:50,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:40:50,784 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:40:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:40:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 61 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 18:40:51,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:40:51,534 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:40:51,536 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-24 18:40:51,539 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [269], [271], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 18:40:51,630 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:40:51,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:40:53,307 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:41:04,816 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:41:04,817 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:41:04,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:41:04,839 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:41:09,489 INFO L232 lantSequenceWeakener]: Weakened 56 states. On average, predicates are now at 79.22% of their original sizes. [2018-10-24 18:41:09,489 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:41:58,258 INFO L413 sIntCurrentIteration]: We have 216 unified AI predicates [2018-10-24 18:41:58,259 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:41:58,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:41:58,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-24 18:41:58,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:41:58,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 18:41:58,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 18:41:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2018-10-24 18:41:58,262 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 18:44:34,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 18:44:34,918 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:44:34,923 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:44:34,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:44:34 BoogieIcfgContainer [2018-10-24 18:44:34,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:44:34,924 INFO L168 Benchmark]: Toolchain (without parser) took 252154.21 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 451.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:34,926 INFO L168 Benchmark]: CDTParser took 0.15 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 18:44:34,926 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1251.82 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:34,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 365.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:34,928 INFO L168 Benchmark]: Boogie Preprocessor took 256.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:34,929 INFO L168 Benchmark]: RCFGBuilder took 9528.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 318.8 MB). Peak memory consumption was 318.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:34,930 INFO L168 Benchmark]: TraceAbstraction took 240748.04 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:44:34,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1251.82 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 365.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 256.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9528.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 318.8 MB). Peak memory consumption was 318.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240748.04 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). Peak memory consumption was 126.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was constructing difference of abstraction (2921states) and FLOYD_HOARE automaton (currently 19 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (992 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 240.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 172.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 814 SDtfs, 3638 SDslu, 400 SDs, 0 SdLazy, 5458 SolverSat, 1170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 237 GetRequests, 168 SyntacticMatches, 36 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 52.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2921occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9945400563607087 AbsIntWeakeningRatio, 0.12037037037037036 AbsIntAvgWeakeningVarsNumRemoved, 180.80555555555554 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 361 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 256148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 97/174 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown