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/Problem01_label15_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:15:01,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:15:01,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:15:01,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:15:01,062 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:15:01,063 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:15:01,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:15:01,067 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:15:01,069 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:15:01,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:15:01,074 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:15:01,075 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:15:01,078 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:15:01,081 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:15:01,089 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:15:01,090 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:15:01,091 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:15:01,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:15:01,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:15:01,103 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:15:01,106 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:15:01,108 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:15:01,111 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:15:01,124 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 17:15:01,157 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:15:01,157 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:15:01,158 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:15:01,158 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:15:01,158 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:15:01,159 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:15:01,159 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:15:01,160 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:15:01,160 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:15:01,160 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:15:01,160 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:15:01,161 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:15:01,161 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:15:01,163 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:15:01,163 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:15:01,163 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:15:01,163 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:15:01,164 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:15:01,164 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:15:01,164 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:15:01,164 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:15:01,164 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:15:01,166 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:15:01,166 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:15:01,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:01,166 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:15:01,167 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:15:01,167 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:15:01,167 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:15:01,167 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:15:01,167 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:15:01,168 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:15:01,168 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:15:01,168 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:15:01,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:15:01,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:15:01,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:15:01,270 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:15:01,271 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:15:01,272 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15_false-unreach-call_false-termination.c [2018-10-24 17:15:01,346 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fa532754/7fa7937b8c714484a720d45ea86473b9/FLAG9e575afee [2018-10-24 17:15:01,937 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:15:01,938 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label15_false-unreach-call_false-termination.c [2018-10-24 17:15:01,956 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fa532754/7fa7937b8c714484a720d45ea86473b9/FLAG9e575afee [2018-10-24 17:15:01,975 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fa532754/7fa7937b8c714484a720d45ea86473b9 [2018-10-24 17:15:01,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:15:01,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:15:01,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:01,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:15:01,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:15:01,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:01" (1/1) ... [2018-10-24 17:15:01,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:01, skipping insertion in model container [2018-10-24 17:15:01,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:01" (1/1) ... [2018-10-24 17:15:02,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:15:02,063 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:15:02,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,477 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:15:02,609 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,633 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:15:02,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02 WrapperNode [2018-10-24 17:15:02,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:15:02,635 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:15:02,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:15:02,860 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:15:02,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:15:02,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:15:02,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:15:02,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (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 17:15:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:15:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:15:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:15:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:15:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:15:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:15:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:15:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:15:06,725 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:15:06,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06 BoogieIcfgContainer [2018-10-24 17:15:06,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:15:06,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:15:06,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:15:06,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:15:06,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:15:01" (1/3) ... [2018-10-24 17:15:06,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (2/3) ... [2018-10-24 17:15:06,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06" (3/3) ... [2018-10-24 17:15:06,735 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label15_false-unreach-call_false-termination.c [2018-10-24 17:15:06,747 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:15:06,756 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:15:06,775 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:15:06,819 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:15:06,819 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:15:06,819 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:15:06,820 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:15:06,820 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:15:06,820 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:15:06,820 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:15:06,821 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:15:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 17:15:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 17:15:06,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:06,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:06,880 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:06,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:06,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1860702232, now seen corresponding path program 1 times [2018-10-24 17:15:06,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:06,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:06,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:07,749 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 17:15:07,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:07,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:15:07,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:07,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:15:07,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:15:07,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:07,785 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2018-10-24 17:15:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:09,871 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 17:15:09,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:09,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-24 17:15:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:09,900 INFO L225 Difference]: With dead ends: 550 [2018-10-24 17:15:09,901 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 17:15:09,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 17:15:09,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 17:15:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 17:15:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 559 transitions. [2018-10-24 17:15:09,989 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 559 transitions. Word has length 88 [2018-10-24 17:15:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:09,990 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 559 transitions. [2018-10-24 17:15:09,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:15:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 559 transitions. [2018-10-24 17:15:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 17:15:09,997 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:09,997 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:09,997 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:09,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:09,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1452643527, now seen corresponding path program 1 times [2018-10-24 17:15:09,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:09,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:10,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:10,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:10,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:10,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:10,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:10,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:10,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:10,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:10,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:10,219 INFO L87 Difference]: Start difference. First operand 340 states and 559 transitions. Second operand 6 states. [2018-10-24 17:15:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:12,189 INFO L93 Difference]: Finished difference Result 876 states and 1455 transitions. [2018-10-24 17:15:12,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:12,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-24 17:15:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:12,198 INFO L225 Difference]: With dead ends: 876 [2018-10-24 17:15:12,198 INFO L226 Difference]: Without dead ends: 542 [2018-10-24 17:15:12,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:15:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-10-24 17:15:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 525. [2018-10-24 17:15:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-24 17:15:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 806 transitions. [2018-10-24 17:15:12,248 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 806 transitions. Word has length 99 [2018-10-24 17:15:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:12,248 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 806 transitions. [2018-10-24 17:15:12,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 806 transitions. [2018-10-24 17:15:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 17:15:12,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:12,255 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:15:12,256 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:12,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1899258651, now seen corresponding path program 1 times [2018-10-24 17:15:12,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:12,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:12,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:12,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:12,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:12,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:12,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:15:12,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:12,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:15:12,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:15:12,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:12,483 INFO L87 Difference]: Start difference. First operand 525 states and 806 transitions. Second operand 4 states. [2018-10-24 17:15:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:14,576 INFO L93 Difference]: Finished difference Result 1722 states and 2796 transitions. [2018-10-24 17:15:14,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:15:14,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-24 17:15:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:14,590 INFO L225 Difference]: With dead ends: 1722 [2018-10-24 17:15:14,590 INFO L226 Difference]: Without dead ends: 1203 [2018-10-24 17:15:14,594 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 17:15:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2018-10-24 17:15:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2018-10-24 17:15:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2018-10-24 17:15:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1776 transitions. [2018-10-24 17:15:14,655 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1776 transitions. Word has length 100 [2018-10-24 17:15:14,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:14,656 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1776 transitions. [2018-10-24 17:15:14,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:15:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1776 transitions. [2018-10-24 17:15:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 17:15:14,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:14,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:14,666 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:14,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:14,667 INFO L82 PathProgramCache]: Analyzing trace with hash -353488745, now seen corresponding path program 1 times [2018-10-24 17:15:14,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:14,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:14,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:14,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:14,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:14,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:14,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 17:15:14,970 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:14,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:15:14,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:15:14,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:15:14,972 INFO L87 Difference]: Start difference. First operand 1203 states and 1776 transitions. Second operand 7 states. [2018-10-24 17:15:15,876 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:15:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:17,884 INFO L93 Difference]: Finished difference Result 3407 states and 5228 transitions. [2018-10-24 17:15:17,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 17:15:17,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-24 17:15:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:17,910 INFO L225 Difference]: With dead ends: 3407 [2018-10-24 17:15:17,910 INFO L226 Difference]: Without dead ends: 2210 [2018-10-24 17:15:17,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-10-24 17:15:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2018-10-24 17:15:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2187. [2018-10-24 17:15:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2018-10-24 17:15:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3027 transitions. [2018-10-24 17:15:18,020 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3027 transitions. Word has length 123 [2018-10-24 17:15:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:18,021 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3027 transitions. [2018-10-24 17:15:18,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:15:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3027 transitions. [2018-10-24 17:15:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 17:15:18,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:18,028 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:18,028 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:18,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1002628988, now seen corresponding path program 1 times [2018-10-24 17:15:18,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:18,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:18,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:18,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:18,030 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:18,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:18,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:18,265 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-10-24 17:15:18,269 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [109], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:18,351 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:18,352 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:58,288 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:58,290 INFO L272 AbstractInterpreter]: Visited 92 different actions 157 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 17:15:58,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:58,301 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:16:04,741 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 80.8% of their original sizes. [2018-10-24 17:16:04,741 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:16:46,100 INFO L413 sIntCurrentIteration]: We have 134 unified AI predicates [2018-10-24 17:16:46,100 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:16:46,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:16:46,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-24 17:16:46,101 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:16:46,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 17:16:46,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 17:16:46,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2018-10-24 17:16:46,102 INFO L87 Difference]: Start difference. First operand 2187 states and 3027 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 17:19:23,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 17:19:23,114 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:19:23,120 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:19:23,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:19:23 BoogieIcfgContainer [2018-10-24 17:19:23,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:19:23,126 INFO L168 Benchmark]: Toolchain (without parser) took 261138.49 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -618.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:23,128 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:23,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.13 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:23,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 225.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:23,132 INFO L168 Benchmark]: Boogie Preprocessor took 103.84 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. [2018-10-24 17:19:23,132 INFO L168 Benchmark]: RCFGBuilder took 3762.35 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: 106.2 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:23,133 INFO L168 Benchmark]: TraceAbstraction took 256393.72 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 72.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:23,142 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.13 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 225.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.84 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 3762.35 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: 106.2 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256393.72 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 72.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 419]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 419). Cancelled while BasicCegarLoop was constructing difference of abstraction (2187states) and FLOYD_HOARE automaton (currently 20 states, 21 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 33 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 256.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 166.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 367 SDtfs, 2201 SDslu, 397 SDs, 0 SdLazy, 3774 SolverSat, 765 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 182 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 56.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2187occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933953923760986 AbsIntWeakeningRatio, 0.26119402985074625 AbsIntAvgWeakeningVarsNumRemoved, 828.7537313432836 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 545 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 264595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 100/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown