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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:58:02,890 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:58:02,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:58:02,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:58:02,910 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:58:02,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:58:02,913 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:58:02,917 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:58:02,921 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:58:02,922 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:58:02,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:58:02,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:58:02,928 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:58:02,933 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:58:02,934 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:58:02,935 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:58:02,938 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:58:02,939 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:58:02,943 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:58:02,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:58:02,946 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:58:02,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:58:02,949 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:58:02,957 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:58:02,983 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:58:02,983 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:58:02,984 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:58:02,984 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:58:02,985 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:58:02,985 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:58:02,985 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:58:02,985 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:58:02,985 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:58:02,986 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:58:02,986 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:58:02,986 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:58:02,986 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:58:02,986 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:58:02,987 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:58:02,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:58:02,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:58:02,988 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:58:02,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:58:02,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:58:02,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:58:02,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:58:02,989 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:58:02,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:58:02,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:58:02,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:58:02,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:58:02,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:58:02,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:58:02,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:58:02,990 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:58:02,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:58:02,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:58:02,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:58:02,991 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:58:02,991 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:58:03,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:58:03,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:58:03,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:58:03,065 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:58:03,065 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:58:03,066 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-24 23:58:03,140 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e371884b/1ee8ed66a1e541fc8edd9b3868c48328/FLAG383d94321 [2018-10-24 23:58:03,944 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:58:03,945 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-24 23:58:03,986 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e371884b/1ee8ed66a1e541fc8edd9b3868c48328/FLAG383d94321 [2018-10-24 23:58:04,001 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e371884b/1ee8ed66a1e541fc8edd9b3868c48328 [2018-10-24 23:58:04,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:58:04,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:58:04,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:58:04,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:58:04,020 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:58:04,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:58:04" (1/1) ... [2018-10-24 23:58:04,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:04, skipping insertion in model container [2018-10-24 23:58:04,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:58:04" (1/1) ... [2018-10-24 23:58:04,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:58:04,263 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:58:06,140 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:58:06,146 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:58:07,168 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:58:07,224 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:58:07,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07 WrapperNode [2018-10-24 23:58:07,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:58:07,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:58:07,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:58:07,227 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:58:07,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:07,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:07,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:58:07,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:58:07,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:58:07,972 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:58:07,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:07,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:08,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:08,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:08,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:08,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:08,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (1/1) ... [2018-10-24 23:58:08,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:58:08,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:58:08,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:58:08,597 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:58:08,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (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 23:58:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:58:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:58:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 23:58:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 23:58:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 23:58:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 23:58:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 23:58:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 23:58:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 23:58:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 23:58:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:58:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:58:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:58:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:58:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:58:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:58:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:58:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:58:26,543 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:58:26,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:58:26 BoogieIcfgContainer [2018-10-24 23:58:26,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:58:26,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:58:26,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:58:26,549 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:58:26,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:58:04" (1/3) ... [2018-10-24 23:58:26,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c87d2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:58:26, skipping insertion in model container [2018-10-24 23:58:26,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:58:07" (2/3) ... [2018-10-24 23:58:26,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c87d2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:58:26, skipping insertion in model container [2018-10-24 23:58:26,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:58:26" (3/3) ... [2018-10-24 23:58:26,553 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label55_false-unreach-call.c [2018-10-24 23:58:26,563 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:58:26,574 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:58:26,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:58:26,648 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:58:26,648 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:58:26,648 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:58:26,649 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:58:26,649 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:58:26,649 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:58:26,649 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:58:26,649 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:58:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 23:58:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 23:58:26,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:58:26,713 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] [2018-10-24 23:58:26,716 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:58:26,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:58:26,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1214418350, now seen corresponding path program 1 times [2018-10-24 23:58:26,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:58:26,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:26,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:58:26,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:26,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:58:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:58:27,143 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 23:58:27,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:58:27,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:58:27,146 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:58:27,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:58:27,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:58:27,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:58:27,173 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 23:58:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:58:46,293 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-24 23:58:46,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:58:46,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-24 23:58:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:58:46,365 INFO L225 Difference]: With dead ends: 4998 [2018-10-24 23:58:46,365 INFO L226 Difference]: Without dead ends: 3218 [2018-10-24 23:58:46,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:58:46,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-24 23:58:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-24 23:58:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 23:58:46,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-24 23:58:46,597 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 21 [2018-10-24 23:58:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:58:46,597 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-24 23:58:46,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:58:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-24 23:58:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 23:58:46,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:58:46,605 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:58:46,605 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:58:46,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:58:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1828457188, now seen corresponding path program 1 times [2018-10-24 23:58:46,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:58:46,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:46,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:58:46,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:58:46,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:58:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:58:46,972 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:58:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:58:47,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:58:47,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:58:47,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:58:47,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:58:47,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:58:47,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:58:47,352 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-24 23:59:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:59:19,562 INFO L93 Difference]: Finished difference Result 10756 states and 19780 transitions. [2018-10-24 23:59:19,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:59:19,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-24 23:59:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:59:19,608 INFO L225 Difference]: With dead ends: 10756 [2018-10-24 23:59:19,608 INFO L226 Difference]: Without dead ends: 7547 [2018-10-24 23:59:19,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:59:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7547 states. [2018-10-24 23:59:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7547 to 7507. [2018-10-24 23:59:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7507 states. [2018-10-24 23:59:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 12458 transitions. [2018-10-24 23:59:19,816 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 12458 transitions. Word has length 93 [2018-10-24 23:59:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:59:19,817 INFO L481 AbstractCegarLoop]: Abstraction has 7507 states and 12458 transitions. [2018-10-24 23:59:19,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:59:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 12458 transitions. [2018-10-24 23:59:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 23:59:19,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:59:19,820 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:59:19,820 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:59:19,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:59:19,821 INFO L82 PathProgramCache]: Analyzing trace with hash -311823129, now seen corresponding path program 1 times [2018-10-24 23:59:19,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:59:19,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:59:19,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:59:19,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:59:19,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:59:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:59:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:59:20,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:59:20,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:59:20,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:59:20,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:59:20,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:59:20,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:59:20,050 INFO L87 Difference]: Start difference. First operand 7507 states and 12458 transitions. Second operand 6 states. [2018-10-24 23:59:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:59:47,410 INFO L93 Difference]: Finished difference Result 23923 states and 40038 transitions. [2018-10-24 23:59:47,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:59:47,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-24 23:59:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:59:47,498 INFO L225 Difference]: With dead ends: 23923 [2018-10-24 23:59:47,498 INFO L226 Difference]: Without dead ends: 16422 [2018-10-24 23:59:47,527 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 23:59:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16422 states. [2018-10-24 23:59:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16422 to 16239. [2018-10-24 23:59:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16239 states. [2018-10-24 23:59:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16239 states to 16239 states and 25363 transitions. [2018-10-24 23:59:47,948 INFO L78 Accepts]: Start accepts. Automaton has 16239 states and 25363 transitions. Word has length 95 [2018-10-24 23:59:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:59:47,949 INFO L481 AbstractCegarLoop]: Abstraction has 16239 states and 25363 transitions. [2018-10-24 23:59:47,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:59:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 16239 states and 25363 transitions. [2018-10-24 23:59:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 23:59:47,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:59:47,953 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:59:47,953 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:59:47,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:59:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash -390491480, now seen corresponding path program 1 times [2018-10-24 23:59:47,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:59:47,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:59:47,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:59:47,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:59:47,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:59:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:59:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:59:48,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:59:48,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:59:48,339 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:59:48,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:59:48,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:59:48,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:59:48,340 INFO L87 Difference]: Start difference. First operand 16239 states and 25363 transitions. Second operand 6 states. [2018-10-25 00:00:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:00:37,214 INFO L93 Difference]: Finished difference Result 61545 states and 99652 transitions. [2018-10-25 00:00:37,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:00:37,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-25 00:00:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:00:37,394 INFO L225 Difference]: With dead ends: 61545 [2018-10-25 00:00:37,394 INFO L226 Difference]: Without dead ends: 45312 [2018-10-25 00:00:37,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:00:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45312 states. [2018-10-25 00:00:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45312 to 45214. [2018-10-25 00:00:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45214 states. [2018-10-25 00:00:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45214 states to 45214 states and 66543 transitions. [2018-10-25 00:00:38,422 INFO L78 Accepts]: Start accepts. Automaton has 45214 states and 66543 transitions. Word has length 117 [2018-10-25 00:00:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:00:38,422 INFO L481 AbstractCegarLoop]: Abstraction has 45214 states and 66543 transitions. [2018-10-25 00:00:38,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:00:38,423 INFO L276 IsEmpty]: Start isEmpty. Operand 45214 states and 66543 transitions. [2018-10-25 00:00:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-25 00:00:38,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:00:38,430 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:00:38,430 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:00:38,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:00:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash 253376156, now seen corresponding path program 1 times [2018-10-25 00:00:38,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:00:38,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:38,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:00:38,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:00:38,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:00:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:00:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:00:38,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:00:38,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 00:00:38,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:00:38,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 00:00:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 00:00:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 00:00:38,745 INFO L87 Difference]: Start difference. First operand 45214 states and 66543 transitions. Second operand 5 states. [2018-10-25 00:01:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:01:04,048 INFO L93 Difference]: Finished difference Result 135596 states and 211471 transitions. [2018-10-25 00:01:04,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 00:01:04,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-10-25 00:01:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:01:04,347 INFO L225 Difference]: With dead ends: 135596 [2018-10-25 00:01:04,347 INFO L226 Difference]: Without dead ends: 90388 [2018-10-25 00:01:04,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:01:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90388 states. [2018-10-25 00:01:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90388 to 89662. [2018-10-25 00:01:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89662 states. [2018-10-25 00:01:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89662 states to 89662 states and 124511 transitions. [2018-10-25 00:01:06,611 INFO L78 Accepts]: Start accepts. Automaton has 89662 states and 124511 transitions. Word has length 126 [2018-10-25 00:01:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:01:06,612 INFO L481 AbstractCegarLoop]: Abstraction has 89662 states and 124511 transitions. [2018-10-25 00:01:06,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 00:01:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 89662 states and 124511 transitions. [2018-10-25 00:01:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-25 00:01:06,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:01:06,615 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:01:06,616 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:01:06,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:01:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1780754725, now seen corresponding path program 1 times [2018-10-25 00:01:06,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:01:06,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:01:06,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:01:06,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:01:06,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:01:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:01:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:01:07,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:01:07,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:01:07,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:01:07,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:01:07,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:01:07,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:01:07,054 INFO L87 Difference]: Start difference. First operand 89662 states and 124511 transitions. Second operand 6 states. [2018-10-25 00:01:31,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:01:31,041 INFO L93 Difference]: Finished difference Result 211000 states and 309862 transitions. [2018-10-25 00:01:31,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:01:31,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-25 00:01:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:01:31,455 INFO L225 Difference]: With dead ends: 211000 [2018-10-25 00:01:31,455 INFO L226 Difference]: Without dead ends: 121344 [2018-10-25 00:01:31,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:01:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121344 states. [2018-10-25 00:01:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121344 to 120984. [2018-10-25 00:01:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120984 states. [2018-10-25 00:01:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120984 states to 120984 states and 164129 transitions. [2018-10-25 00:01:34,260 INFO L78 Accepts]: Start accepts. Automaton has 120984 states and 164129 transitions. Word has length 154 [2018-10-25 00:01:34,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:01:34,261 INFO L481 AbstractCegarLoop]: Abstraction has 120984 states and 164129 transitions. [2018-10-25 00:01:34,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:01:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 120984 states and 164129 transitions. [2018-10-25 00:01:34,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-25 00:01:34,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:01:34,275 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-25 00:01:34,276 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:01:34,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:01:34,277 INFO L82 PathProgramCache]: Analyzing trace with hash 722491994, now seen corresponding path program 1 times [2018-10-25 00:01:34,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:01:34,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:01:34,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:01:34,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:01:34,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:01:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:01:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 00:01:34,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:01:34,510 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:01:34,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-10-25 00:01:34,513 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5294], [5296], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 00:01:34,561 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:01:34,562 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:01:35,056 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:01:35,058 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 00:01:35,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:01:35,087 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:01:35,646 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 75.02% of their original sizes. [2018-10-25 00:01:35,647 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:01:35,902 INFO L413 sIntCurrentIteration]: We have 191 unified AI predicates [2018-10-25 00:01:35,902 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:01:35,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:01:35,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 00:01:35,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:01:35,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:01:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:01:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:01:35,907 INFO L87 Difference]: Start difference. First operand 120984 states and 164129 transitions. Second operand 6 states. Received shutdown request... [2018-10-25 00:01:52,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:01:52,870 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:01:52,876 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:01:52,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:01:52 BoogieIcfgContainer [2018-10-25 00:01:52,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:01:52,879 INFO L168 Benchmark]: Toolchain (without parser) took 228865.29 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -55.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-25 00:01:52,880 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-25 00:01:52,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3210.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:52,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 744.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 885.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:52,884 INFO L168 Benchmark]: Boogie Preprocessor took 624.96 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:52,884 INFO L168 Benchmark]: RCFGBuilder took 17947.53 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 145.2 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 551.8 MB). Peak memory consumption was 697.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:01:52,885 INFO L168 Benchmark]: TraceAbstraction took 206331.78 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 228.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-25 00:01:52,898 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 3210.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 744.50 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 885.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 624.96 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17947.53 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 145.2 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 551.8 MB). Peak memory consumption was 697.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206331.78 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 228.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (120984states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (15831 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 195.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3755 SDtfs, 37571 SDslu, 4431 SDs, 0 SdLazy, 66108 SolverSat, 14382 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 161.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 244 GetRequests, 201 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120984occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9975236084956096 AbsIntWeakeningRatio, 0.14659685863874344 AbsIntAvgWeakeningVarsNumRemoved, 16.895287958115183 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 1410 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 499990 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 103/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown