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/Problem19_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:06:27,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:06:27,737 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:06:27,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:06:27,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:06:27,762 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:06:27,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:06:27,765 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:06:27,767 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:06:27,768 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:06:27,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:06:27,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:06:27,770 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:06:27,773 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:06:27,774 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:06:27,775 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:06:27,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:06:27,781 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:06:27,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:06:27,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:06:27,793 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:06:27,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:06:27,800 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:06:27,816 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 19:06:27,847 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:06:27,847 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:06:27,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:06:27,848 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:06:27,848 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:06:27,848 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:06:27,849 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:06:27,849 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:06:27,849 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:06:27,850 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:06:27,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:06:27,850 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:06:27,851 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:06:27,851 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:06:27,851 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:06:27,851 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:06:27,851 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:06:27,851 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:06:27,853 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:06:27,853 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:06:27,853 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:06:27,853 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:06:27,854 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:06:27,854 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:06:27,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:06:27,854 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:06:27,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:06:27,855 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:06:27,855 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:06:27,855 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:06:27,855 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:06:27,855 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:06:27,856 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:06:27,856 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:06:27,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:06:27,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:06:27,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:06:27,930 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:06:27,931 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:06:27,932 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c [2018-10-24 19:06:27,994 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1999e2365/8482d54868654cf2802b36300309c84a/FLAG5445ba83d [2018-10-24 19:06:28,913 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:06:28,914 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c [2018-10-24 19:06:28,967 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1999e2365/8482d54868654cf2802b36300309c84a/FLAG5445ba83d [2018-10-24 19:06:28,987 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1999e2365/8482d54868654cf2802b36300309c84a [2018-10-24 19:06:28,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:06:29,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:06:29,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:06:29,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:06:29,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:06:29,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:06:28" (1/1) ... [2018-10-24 19:06:29,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:29, skipping insertion in model container [2018-10-24 19:06:29,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:06:28" (1/1) ... [2018-10-24 19:06:29,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:06:29,296 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:06:31,328 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:06:31,336 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:06:32,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:06:32,798 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:06:32,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32 WrapperNode [2018-10-24 19:06:32,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:06:32,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:06:32,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:06:32,800 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:06:32,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:32,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:06:33,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:06:33,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:06:33,534 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:06:33,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (1/1) ... [2018-10-24 19:06:33,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:06:33,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:06:33,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:06:33,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:06:33,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (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 19:06:34,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:06:34,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:06:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 19:06:34,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 19:06:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 19:06:34,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 19:06:34,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 19:06:34,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 19:06:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:06:34,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:06:34,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:06:34,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:06:34,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:06:34,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:06:34,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:06:34,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:06:34,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:06:34,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:06:54,189 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:06:54,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:06:54 BoogieIcfgContainer [2018-10-24 19:06:54,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:06:54,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:06:54,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:06:54,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:06:54,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:06:28" (1/3) ... [2018-10-24 19:06:54,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60247ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:06:54, skipping insertion in model container [2018-10-24 19:06:54,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:06:32" (2/3) ... [2018-10-24 19:06:54,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60247ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:06:54, skipping insertion in model container [2018-10-24 19:06:54,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:06:54" (3/3) ... [2018-10-24 19:06:54,199 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label32_false-unreach-call.c [2018-10-24 19:06:54,209 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:06:54,219 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:06:54,237 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:06:54,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:06:54,296 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:06:54,296 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:06:54,296 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:06:54,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:06:54,296 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:06:54,297 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:06:54,297 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:06:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 19:06:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 19:06:54,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:06:54,357 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] [2018-10-24 19:06:54,360 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:06:54,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:06:54,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1445430796, now seen corresponding path program 1 times [2018-10-24 19:06:54,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:06:54,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:06:54,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:06:54,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:06:54,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:06:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:06:54,795 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 19:06:54,806 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 19:06:54,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:06:54,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:06:54,810 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:06:54,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:06:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:06:54,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:06:54,836 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-24 19:07:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:07:23,083 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-10-24 19:07:23,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:07:23,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-24 19:07:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:07:23,157 INFO L225 Difference]: With dead ends: 6510 [2018-10-24 19:07:23,157 INFO L226 Difference]: Without dead ends: 4726 [2018-10-24 19:07:23,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:07:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-10-24 19:07:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-10-24 19:07:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-10-24 19:07:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-10-24 19:07:23,605 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 26 [2018-10-24 19:07:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:07:23,606 INFO L481 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-10-24 19:07:23,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:07:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-10-24 19:07:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 19:07:23,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:07:23,612 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:07:23,612 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:07:23,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:07:23,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1775756567, now seen corresponding path program 1 times [2018-10-24 19:07:23,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:07:23,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:23,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:07:23,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:23,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:07:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:07:23,936 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:07:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:07:24,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:07:24,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:07:24,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:07:24,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:07:24,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:07:24,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:07:24,352 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-10-24 19:07:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:07:53,452 INFO L93 Difference]: Finished difference Result 17869 states and 28883 transitions. [2018-10-24 19:07:53,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:07:53,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-24 19:07:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:07:53,521 INFO L225 Difference]: With dead ends: 17869 [2018-10-24 19:07:53,521 INFO L226 Difference]: Without dead ends: 13188 [2018-10-24 19:07:53,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:07:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13188 states. [2018-10-24 19:07:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13188 to 13117. [2018-10-24 19:07:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13117 states. [2018-10-24 19:07:54,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13117 states to 13117 states and 18720 transitions. [2018-10-24 19:07:54,076 INFO L78 Accepts]: Start accepts. Automaton has 13117 states and 18720 transitions. Word has length 98 [2018-10-24 19:07:54,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:07:54,077 INFO L481 AbstractCegarLoop]: Abstraction has 13117 states and 18720 transitions. [2018-10-24 19:07:54,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:07:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 13117 states and 18720 transitions. [2018-10-24 19:07:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 19:07:54,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:07:54,086 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:07:54,086 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:07:54,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:07:54,087 INFO L82 PathProgramCache]: Analyzing trace with hash 818575424, now seen corresponding path program 1 times [2018-10-24 19:07:54,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:07:54,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:54,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:07:54,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:54,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:07:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:07:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:07:54,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:07:54,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:07:54,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:07:54,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:07:54,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:07:54,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:07:54,547 INFO L87 Difference]: Start difference. First operand 13117 states and 18720 transitions. Second operand 6 states. [2018-10-24 19:08:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:08:17,531 INFO L93 Difference]: Finished difference Result 43719 states and 64680 transitions. [2018-10-24 19:08:17,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:08:17,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-24 19:08:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:08:17,674 INFO L225 Difference]: With dead ends: 43719 [2018-10-24 19:08:17,675 INFO L226 Difference]: Without dead ends: 30608 [2018-10-24 19:08:17,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:08:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30608 states. [2018-10-24 19:08:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30608 to 30445. [2018-10-24 19:08:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30445 states. [2018-10-24 19:08:18,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30445 states to 30445 states and 42900 transitions. [2018-10-24 19:08:18,416 INFO L78 Accepts]: Start accepts. Automaton has 30445 states and 42900 transitions. Word has length 100 [2018-10-24 19:08:18,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:08:18,417 INFO L481 AbstractCegarLoop]: Abstraction has 30445 states and 42900 transitions. [2018-10-24 19:08:18,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:08:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 30445 states and 42900 transitions. [2018-10-24 19:08:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 19:08:18,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:08:18,427 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:08:18,427 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:08:18,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:08:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1174335449, now seen corresponding path program 1 times [2018-10-24 19:08:18,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:08:18,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:18,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:08:18,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:18,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:08:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:08:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:08:18,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:08:18,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:08:18,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:08:18,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:08:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:08:18,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:08:18,948 INFO L87 Difference]: Start difference. First operand 30445 states and 42900 transitions. Second operand 6 states. [2018-10-24 19:08:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:08:43,252 INFO L93 Difference]: Finished difference Result 92648 states and 135416 transitions. [2018-10-24 19:08:43,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:08:43,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-24 19:08:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:08:43,495 INFO L225 Difference]: With dead ends: 92648 [2018-10-24 19:08:43,496 INFO L226 Difference]: Without dead ends: 62209 [2018-10-24 19:08:43,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:08:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62209 states. [2018-10-24 19:08:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62209 to 61796. [2018-10-24 19:08:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61796 states. [2018-10-24 19:08:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61796 states to 61796 states and 86961 transitions. [2018-10-24 19:08:44,861 INFO L78 Accepts]: Start accepts. Automaton has 61796 states and 86961 transitions. Word has length 108 [2018-10-24 19:08:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:08:44,862 INFO L481 AbstractCegarLoop]: Abstraction has 61796 states and 86961 transitions. [2018-10-24 19:08:44,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:08:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 61796 states and 86961 transitions. [2018-10-24 19:08:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 19:08:44,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:08:44,864 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:08:44,864 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:08:44,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:08:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1464596079, now seen corresponding path program 1 times [2018-10-24 19:08:44,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:08:44,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:44,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:08:44,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:44,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:08:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:08:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:08:45,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:08:45,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:08:45,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:08:45,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:08:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:08:45,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:08:45,201 INFO L87 Difference]: Start difference. First operand 61796 states and 86961 transitions. Second operand 5 states. [2018-10-24 19:09:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:09:15,673 INFO L93 Difference]: Finished difference Result 187409 states and 274139 transitions. [2018-10-24 19:09:15,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:09:15,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-10-24 19:09:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:09:16,165 INFO L225 Difference]: With dead ends: 187409 [2018-10-24 19:09:16,165 INFO L226 Difference]: Without dead ends: 125619 [2018-10-24 19:09:16,301 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 [2018-10-24 19:09:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125619 states. [2018-10-24 19:09:18,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125619 to 124304. [2018-10-24 19:09:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124304 states. [2018-10-24 19:09:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124304 states to 124304 states and 163351 transitions. [2018-10-24 19:09:18,806 INFO L78 Accepts]: Start accepts. Automaton has 124304 states and 163351 transitions. Word has length 128 [2018-10-24 19:09:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:09:18,807 INFO L481 AbstractCegarLoop]: Abstraction has 124304 states and 163351 transitions. [2018-10-24 19:09:18,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:09:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 124304 states and 163351 transitions. [2018-10-24 19:09:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 19:09:18,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:09:18,810 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:18,811 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:09:18,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:09:18,811 INFO L82 PathProgramCache]: Analyzing trace with hash 404724510, now seen corresponding path program 1 times [2018-10-24 19:09:18,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:09:18,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:09:18,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:09:18,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:09:18,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:09:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:09:19,085 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:09:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:09:19,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:09:19,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:09:19,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:09:19,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:09:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:09:19,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:09:19,256 INFO L87 Difference]: Start difference. First operand 124304 states and 163351 transitions. Second operand 6 states. [2018-10-24 19:09:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:09:38,930 INFO L93 Difference]: Finished difference Result 280794 states and 388502 transitions. [2018-10-24 19:09:38,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:09:38,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-10-24 19:09:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:09:39,437 INFO L225 Difference]: With dead ends: 280794 [2018-10-24 19:09:39,437 INFO L226 Difference]: Without dead ends: 156496 [2018-10-24 19:09:39,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:09:39,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156496 states. [2018-10-24 19:09:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156496 to 155547. [2018-10-24 19:09:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155547 states. [2018-10-24 19:09:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155547 states to 155547 states and 205243 transitions. [2018-10-24 19:09:43,020 INFO L78 Accepts]: Start accepts. Automaton has 155547 states and 205243 transitions. Word has length 191 [2018-10-24 19:09:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:09:43,021 INFO L481 AbstractCegarLoop]: Abstraction has 155547 states and 205243 transitions. [2018-10-24 19:09:43,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:09:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 155547 states and 205243 transitions. [2018-10-24 19:09:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-10-24 19:09:43,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:09:43,039 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:43,039 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:09:43,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:09:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash 853843109, now seen corresponding path program 1 times [2018-10-24 19:09:43,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:09:43,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:09:43,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:09:43,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:09:43,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:09:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:09:43,741 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:09:43,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:09:43,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:09:43,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:09:43,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:09:43,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:09:43,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:09:43,744 INFO L87 Difference]: Start difference. First operand 155547 states and 205243 transitions. Second operand 4 states. [2018-10-24 19:10:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:10:09,891 INFO L93 Difference]: Finished difference Result 436694 states and 605186 transitions. [2018-10-24 19:10:09,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:10:09,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 620 [2018-10-24 19:10:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:10:10,747 INFO L225 Difference]: With dead ends: 436694 [2018-10-24 19:10:10,747 INFO L226 Difference]: Without dead ends: 281153 [2018-10-24 19:10:10,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:10:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281153 states. [2018-10-24 19:10:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281153 to 280777. [2018-10-24 19:10:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280777 states. [2018-10-24 19:10:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280777 states to 280777 states and 372868 transitions. [2018-10-24 19:10:17,966 INFO L78 Accepts]: Start accepts. Automaton has 280777 states and 372868 transitions. Word has length 620 [2018-10-24 19:10:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:10:17,967 INFO L481 AbstractCegarLoop]: Abstraction has 280777 states and 372868 transitions. [2018-10-24 19:10:17,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:10:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 280777 states and 372868 transitions. [2018-10-24 19:10:18,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2018-10-24 19:10:18,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:10:18,043 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:18,044 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:10:18,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:10:18,044 INFO L82 PathProgramCache]: Analyzing trace with hash 982081139, now seen corresponding path program 1 times [2018-10-24 19:10:18,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:10:18,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:10:18,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:10:18,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:10:18,046 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:10:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:10:18,872 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-10-24 19:10:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 185 proven. 421 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-24 19:10:28,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:10:28,064 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:10:28,066 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 967 with the following transitions: [2018-10-24 19:10:28,069 INFO L202 CegarAbsIntRunner]: [0], [1], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4297], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5143], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5334], [5336], [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], [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], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6007], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-10-24 19:10:28,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:10:28,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:10:28,239 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:10:28,240 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:10:28,241 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:10:28,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:10:28,241 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:10:28,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:10:28,255 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:10:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:10:28,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:10:28,690 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:10:28,892 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:10:28,892 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:10:28,898 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:10:28,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:10:28 BoogieIcfgContainer [2018-10-24 19:10:28,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:10:28,901 INFO L168 Benchmark]: Toolchain (without parser) took 239900.95 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 19:10:28,902 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:10:28,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3796.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 993.6 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:10:28,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 733.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 993.6 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:10:28,907 INFO L168 Benchmark]: Boogie Preprocessor took 451.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:10:28,908 INFO L168 Benchmark]: RCFGBuilder took 20204.60 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 167.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 520.3 MB). Peak memory consumption was 688.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:10:28,916 INFO L168 Benchmark]: TraceAbstraction took 214708.14 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 411.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:10:28,925 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3796.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 993.6 MB in the end (delta: 403.3 MB). Peak memory consumption was 403.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 733.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 993.6 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 451.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20204.60 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 167.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 520.3 MB). Peak memory consumption was 688.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214708.14 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 411.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was analyzing trace of length 967 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 214.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 184.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5253 SDtfs, 44787 SDslu, 5043 SDs, 0 SdLazy, 66570 SolverSat, 18756 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 154.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280777occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 3326 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1271 NumberOfCodeBlocks, 1271 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1264 ConstructedInterpolants, 0 QuantifiedInterpolants, 845222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 114/114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown