java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:53:13,934 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:53:13,936 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:53:13,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:53:13,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:53:13,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:53:13,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:53:13,965 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:53:13,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:53:13,967 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:53:13,968 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:53:13,968 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:53:13,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:53:13,970 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:53:13,971 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:53:13,972 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:53:13,973 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:53:13,975 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:53:13,977 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:53:13,979 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:53:13,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:53:13,981 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:53:13,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:53:13,992 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:53:14,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:53:14,017 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:53:14,019 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:53:14,020 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:53:14,020 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:53:14,020 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:53:14,020 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:53:14,020 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:53:14,021 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:53:14,021 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:53:14,022 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:53:14,022 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:53:14,022 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:53:14,023 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:53:14,023 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:53:14,023 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:53:14,023 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:53:14,023 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:53:14,023 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:53:14,024 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:53:14,024 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:53:14,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:53:14,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:53:14,024 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:53:14,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:53:14,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:53:14,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:53:14,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:53:14,025 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:53:14,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:53:14,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:53:14,026 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:53:14,026 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:53:14,026 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:53:14,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:53:14,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:53:14,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:53:14,094 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:53:14,095 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:53:14,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c [2018-11-07 02:53:14,162 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d3e202d/d3f8effb1a8e4118be03d5cb0e335b2c/FLAGa4a101251 [2018-11-07 02:53:14,769 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:53:14,771 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c [2018-11-07 02:53:14,789 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d3e202d/d3f8effb1a8e4118be03d5cb0e335b2c/FLAGa4a101251 [2018-11-07 02:53:14,808 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27d3e202d/d3f8effb1a8e4118be03d5cb0e335b2c [2018-11-07 02:53:14,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:53:14,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:53:14,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:53:14,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:53:14,827 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:53:14,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:14" (1/1) ... [2018-11-07 02:53:14,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c35e21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:14, skipping insertion in model container [2018-11-07 02:53:14,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:14" (1/1) ... [2018-11-07 02:53:14,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:53:14,911 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:53:15,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:53:15,600 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:53:15,770 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:53:15,794 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:53:15,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15 WrapperNode [2018-11-07 02:53:15,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:53:15,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:53:15,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:53:15,796 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:53:15,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:15,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:15,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:53:15,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:53:15,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:53:15,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:53:15,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:15,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:15,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:15,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:16,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:16,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:16,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... [2018-11-07 02:53:16,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:53:16,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:53:16,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:53:16,104 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:53:16,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:53:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:53:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:53:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:53:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:53:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:53:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:53:16,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:53:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:53:16,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:53:20,894 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:53:20,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:20 BoogieIcfgContainer [2018-11-07 02:53:20,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:53:20,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:53:20,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:53:20,901 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:53:20,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:53:14" (1/3) ... [2018-11-07 02:53:20,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55152a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:20, skipping insertion in model container [2018-11-07 02:53:20,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:15" (2/3) ... [2018-11-07 02:53:20,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55152a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:20, skipping insertion in model container [2018-11-07 02:53:20,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:20" (3/3) ... [2018-11-07 02:53:20,908 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label09_true-unreach-call.c [2018-11-07 02:53:20,919 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:53:20,927 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:53:20,942 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:53:20,982 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:53:20,982 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:53:20,983 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:53:20,983 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:53:20,983 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:53:20,983 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:53:20,983 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:53:20,984 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:53:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:53:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 02:53:21,026 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:53:21,027 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:53:21,029 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:53:21,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:53:21,035 INFO L82 PathProgramCache]: Analyzing trace with hash -662645095, now seen corresponding path program 1 times [2018-11-07 02:53:21,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:53:21,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:53:21,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:53:21,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:53:21,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:53:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:53:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:53:21,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:53:21,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:53:21,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:53:21,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:53:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:53:21,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:53:21,683 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 02:53:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:53:24,890 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 02:53:24,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:53:24,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-07 02:53:24,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:53:24,914 INFO L225 Difference]: With dead ends: 985 [2018-11-07 02:53:24,914 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 02:53:24,924 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:53:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 02:53:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 02:53:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 02:53:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 02:53:25,023 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 73 [2018-11-07 02:53:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:53:25,024 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 02:53:25,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:53:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 02:53:25,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 02:53:25,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:53:25,035 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:53:25,036 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:53:25,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:53:25,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2141432933, now seen corresponding path program 1 times [2018-11-07 02:53:25,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:53:25,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:53:25,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:53:25,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:53:25,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:53:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:53:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:53:25,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:53:25,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:53:25,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:53:25,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:53:25,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:53:25,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:53:25,401 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 02:53:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:53:30,675 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-11-07 02:53:30,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:53:30,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 02:53:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:53:30,692 INFO L225 Difference]: With dead ends: 2339 [2018-11-07 02:53:30,692 INFO L226 Difference]: Without dead ends: 1659 [2018-11-07 02:53:30,698 INFO L604 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 [2018-11-07 02:53:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-11-07 02:53:30,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-11-07 02:53:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-11-07 02:53:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-11-07 02:53:30,789 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 154 [2018-11-07 02:53:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:53:30,790 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-11-07 02:53:30,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:53:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-11-07 02:53:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-07 02:53:30,803 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:53:30,804 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:53:30,804 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:53:30,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:53:30,805 INFO L82 PathProgramCache]: Analyzing trace with hash -2008994851, now seen corresponding path program 1 times [2018-11-07 02:53:30,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:53:30,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:53:30,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:53:30,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:53:30,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:53:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:53:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:53:31,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:53:31,852 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:53:31,853 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-07 02:53:31,856 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [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] [2018-11-07 02:53:31,941 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:53:31,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:53:36,320 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:53:54,670 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:53:54,672 INFO L272 AbstractInterpreter]: Visited 139 different actions 405 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 02:53:54,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:53:54,685 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:53:57,963 INFO L227 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 78.7% of their original sizes. [2018-11-07 02:53:57,963 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:54:42,608 INFO L415 sIntCurrentIteration]: We unified 204 AI predicates to 204 [2018-11-07 02:54:42,608 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:54:42,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:54:42,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 21 [2018-11-07 02:54:42,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:54:42,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 02:54:42,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 02:54:42,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-07 02:54:42,612 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 15 states. Received shutdown request... [2018-11-07 02:57:25,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 02:57:25,275 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:57:25,280 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:57:25,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:57:25 BoogieIcfgContainer [2018-11-07 02:57:25,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:57:25,282 INFO L168 Benchmark]: Toolchain (without parser) took 250461.40 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 2.4 GB in the end (delta: -947.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 02:57:25,284 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. [2018-11-07 02:57:25,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 972.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 02:57:25,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 02:57:25,286 INFO L168 Benchmark]: Boogie Preprocessor took 144.15 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:57:25,287 INFO L168 Benchmark]: RCFGBuilder took 4790.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.9 MB). Peak memory consumption was 187.9 MB. Max. memory is 7.1 GB. [2018-11-07 02:57:25,287 INFO L168 Benchmark]: TraceAbstraction took 244384.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -358.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 02:57:25,292 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 972.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 163.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.15 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4790.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.9 MB). Peak memory consumption was 187.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244384.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -358.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (1642states) and FLOYD_HOARE automaton (currently 18 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (1368 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 244.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 171.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 358 SDtfs, 2099 SDslu, 362 SDs, 0 SdLazy, 4480 SolverSat, 704 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 224 GetRequests, 148 SyntacticMatches, 50 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 46.8s 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, 22.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955908289241623 AbsIntWeakeningRatio, 0.11274509803921569 AbsIntAvgWeakeningVarsNumRemoved, 1059.0931372549019 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 381873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 126/132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown