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/Problem16_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:02:39,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:02:39,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:02:39,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:02:39,796 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:02:39,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:02:39,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:02:39,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:02:39,803 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:02:39,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:02:39,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:02:39,805 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:02:39,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:02:39,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:02:39,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:02:39,818 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:02:39,819 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:02:39,826 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:02:39,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:02:39,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:02:39,833 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:02:39,834 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:02:39,837 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:02:39,847 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:02:39,847 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:02:39,848 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:02:39,849 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:02:39,849 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 22:02:39,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:02:39,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:02:39,867 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:02:39,867 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:02:39,868 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:02:39,868 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:02:39,868 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:02:39,868 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:02:39,868 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:02:39,869 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:02:39,869 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:02:39,869 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:02:39,870 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:02:39,870 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:02:39,870 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:02:39,870 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:02:39,870 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:02:39,870 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:02:39,871 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:02:39,871 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:02:39,871 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:02:39,871 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:02:39,871 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:02:39,872 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:02:39,872 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:02:39,872 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:02:39,872 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:02:39,872 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:02:39,873 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:02:39,873 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:02:39,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:02:39,873 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:02:39,873 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:02:39,873 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:02:39,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:02:39,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:02:39,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:02:39,937 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:02:39,938 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:02:39,939 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-10-24 22:02:40,003 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e83266ac1/e37beeaef1aa44ada2f243e4e6c20a1f/FLAGf2fa6e26c [2018-10-24 22:02:40,696 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:02:40,697 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label50_true-unreach-call.c [2018-10-24 22:02:40,718 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e83266ac1/e37beeaef1aa44ada2f243e4e6c20a1f/FLAGf2fa6e26c [2018-10-24 22:02:40,733 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e83266ac1/e37beeaef1aa44ada2f243e4e6c20a1f [2018-10-24 22:02:40,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:02:40,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:02:40,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:02:40,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:02:40,751 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:02:40,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:02:40" (1/1) ... [2018-10-24 22:02:40,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c656ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:40, skipping insertion in model container [2018-10-24 22:02:40,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:02:40" (1/1) ... [2018-10-24 22:02:40,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:02:40,846 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:02:41,583 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:02:41,588 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:02:41,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:02:41,872 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:02:41,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41 WrapperNode [2018-10-24 22:02:41,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:02:41,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:02:41,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:02:41,874 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:02:41,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:41,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:02:42,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:02:42,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:02:42,217 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:02:42,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (1/1) ... [2018-10-24 22:02:42,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:02:42,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:02:42,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:02:42,406 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:02:42,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (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 22:02:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:02:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:02:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:02:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:02:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:02:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:02:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:02:42,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:02:48,838 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:02:48,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:02:48 BoogieIcfgContainer [2018-10-24 22:02:48,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:02:48,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:02:48,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:02:48,846 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:02:48,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:02:40" (1/3) ... [2018-10-24 22:02:48,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84b592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:02:48, skipping insertion in model container [2018-10-24 22:02:48,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:41" (2/3) ... [2018-10-24 22:02:48,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84b592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:02:48, skipping insertion in model container [2018-10-24 22:02:48,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:02:48" (3/3) ... [2018-10-24 22:02:48,850 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label50_true-unreach-call.c [2018-10-24 22:02:48,860 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:02:48,871 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:02:48,891 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:02:48,933 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:02:48,933 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:02:48,933 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:02:48,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:02:48,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:02:48,934 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:02:48,934 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:02:48,934 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:02:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 22:02:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 22:02:48,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:02:48,975 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:02:48,978 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:02:48,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:02:48,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1374048196, now seen corresponding path program 1 times [2018-10-24 22:02:48,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:02:49,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:02:49,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:02:49,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:02:49,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:02:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:02:49,574 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 22:02:49,628 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 22:02:49,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:02:49,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:02:49,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:02:49,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:02:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:02:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:02:49,688 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-24 22:02:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:02:56,521 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-24 22:02:56,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:02:56,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-24 22:02:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:02:56,555 INFO L225 Difference]: With dead ends: 1513 [2018-10-24 22:02:56,555 INFO L226 Difference]: Without dead ends: 1097 [2018-10-24 22:02:56,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:02:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-24 22:02:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-24 22:02:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-24 22:02:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-24 22:02:56,696 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 52 [2018-10-24 22:02:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:02:56,697 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-24 22:02:56,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:02:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-24 22:02:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 22:02:56,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:02:56,716 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:02:56,718 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:02:56,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:02:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2033575421, now seen corresponding path program 1 times [2018-10-24 22:02:56,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:02:56,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:02:56,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:02:56,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:02:56,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:02:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:02:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:02:57,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:02:57,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:02:57,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:02:57,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:02:57,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:02:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:02:57,198 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-24 22:03:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:04,114 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-24 22:03:04,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:04,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-24 22:03:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:04,137 INFO L225 Difference]: With dead ends: 3259 [2018-10-24 22:03:04,137 INFO L226 Difference]: Without dead ends: 2168 [2018-10-24 22:03:04,144 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 [2018-10-24 22:03:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-24 22:03:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-24 22:03:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-24 22:03:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-24 22:03:04,254 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 123 [2018-10-24 22:03:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:04,255 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-24 22:03:04,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:03:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-24 22:03:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 22:03:04,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:04,263 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:04,267 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:04,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:04,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1172506123, now seen corresponding path program 1 times [2018-10-24 22:03:04,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:04,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:04,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:04,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:04,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:03:04,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:04,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:03:04,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:04,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:03:04,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:03:04,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:03:04,594 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-24 22:03:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:10,823 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-24 22:03:10,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:10,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-24 22:03:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:10,865 INFO L225 Difference]: With dead ends: 7053 [2018-10-24 22:03:10,865 INFO L226 Difference]: Without dead ends: 4917 [2018-10-24 22:03:10,888 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 [2018-10-24 22:03:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-24 22:03:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-24 22:03:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-24 22:03:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-24 22:03:11,076 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 151 [2018-10-24 22:03:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:11,077 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-24 22:03:11,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:03:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-24 22:03:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 22:03:11,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:11,082 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:11,083 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:11,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:11,083 INFO L82 PathProgramCache]: Analyzing trace with hash 405483975, now seen corresponding path program 1 times [2018-10-24 22:03:11,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:11,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:11,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:11,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:11,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:03:11,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:11,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:03:11,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:11,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:03:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:03:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:03:11,335 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-24 22:03:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:14,841 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-24 22:03:14,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:14,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-10-24 22:03:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:14,886 INFO L225 Difference]: With dead ends: 11909 [2018-10-24 22:03:14,886 INFO L226 Difference]: Without dead ends: 7038 [2018-10-24 22:03:14,911 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 22:03:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-24 22:03:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-24 22:03:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-24 22:03:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-24 22:03:15,135 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 169 [2018-10-24 22:03:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:15,136 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-24 22:03:15,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:03:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-24 22:03:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 22:03:15,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:15,141 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:15,142 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:15,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash 573454830, now seen corresponding path program 1 times [2018-10-24 22:03:15,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:15,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:15,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:15,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:15,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:15,450 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:03:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:03:15,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:15,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:03:15,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:15,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:03:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:03:15,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:03:15,587 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-24 22:03:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:20,197 INFO L93 Difference]: Finished difference Result 17711 states and 25505 transitions. [2018-10-24 22:03:20,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:20,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-10-24 22:03:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:20,251 INFO L225 Difference]: With dead ends: 17711 [2018-10-24 22:03:20,251 INFO L226 Difference]: Without dead ends: 10740 [2018-10-24 22:03:20,292 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 22:03:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10740 states. [2018-10-24 22:03:20,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10740 to 10702. [2018-10-24 22:03:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-24 22:03:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-24 22:03:20,554 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 216 [2018-10-24 22:03:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:20,555 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-24 22:03:20,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:03:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-24 22:03:20,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 22:03:20,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:20,560 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:20,560 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:20,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:20,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1283886317, now seen corresponding path program 1 times [2018-10-24 22:03:20,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:20,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:20,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:20,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:20,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-24 22:03:20,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:20,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:03:20,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:20,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:03:20,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:03:20,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:03:20,815 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 4 states. [2018-10-24 22:03:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:25,134 INFO L93 Difference]: Finished difference Result 27183 states and 37572 transitions. [2018-10-24 22:03:25,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:03:25,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 253 [2018-10-24 22:03:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:25,204 INFO L225 Difference]: With dead ends: 27183 [2018-10-24 22:03:25,205 INFO L226 Difference]: Without dead ends: 16487 [2018-10-24 22:03:25,246 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 22:03:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2018-10-24 22:03:25,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 16487. [2018-10-24 22:03:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16487 states. [2018-10-24 22:03:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 21483 transitions. [2018-10-24 22:03:25,606 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 21483 transitions. Word has length 253 [2018-10-24 22:03:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:25,607 INFO L481 AbstractCegarLoop]: Abstraction has 16487 states and 21483 transitions. [2018-10-24 22:03:25,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:03:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 21483 transitions. [2018-10-24 22:03:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-10-24 22:03:25,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:25,644 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 22:03:25,644 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:25,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:25,645 INFO L82 PathProgramCache]: Analyzing trace with hash -207588909, now seen corresponding path program 1 times [2018-10-24 22:03:25,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:25,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:25,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:25,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:25,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 254 proven. 115 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-24 22:03:26,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:03:26,223 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:03:26,224 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-10-24 22:03:26,226 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:03:26,299 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:03:26,299 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:03:29,644 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:03:29,645 INFO L272 AbstractInterpreter]: Visited 145 different actions 145 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:03:29,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:29,658 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:03:32,728 INFO L232 lantSequenceWeakener]: Weakened 426 states. On average, predicates are now at 77.7% of their original sizes. [2018-10-24 22:03:32,729 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:03:33,216 INFO L413 sIntCurrentIteration]: We have 436 unified AI predicates [2018-10-24 22:03:33,216 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:03:33,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:03:33,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 22:03:33,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:33,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:03:33,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:03:33,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:03:33,218 INFO L87 Difference]: Start difference. First operand 16487 states and 21483 transitions. Second operand 8 states. [2018-10-24 22:03:36,866 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:04:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:04:49,669 INFO L93 Difference]: Finished difference Result 33308 states and 43351 transitions. [2018-10-24 22:04:49,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:04:49,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 437 [2018-10-24 22:04:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:04:49,726 INFO L225 Difference]: With dead ends: 33308 [2018-10-24 22:04:49,727 INFO L226 Difference]: Without dead ends: 16827 [2018-10-24 22:04:49,785 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 438 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:04:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16827 states. [2018-10-24 22:04:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16827 to 16825. [2018-10-24 22:04:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16825 states. [2018-10-24 22:04:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16825 states to 16825 states and 21830 transitions. [2018-10-24 22:04:50,131 INFO L78 Accepts]: Start accepts. Automaton has 16825 states and 21830 transitions. Word has length 437 [2018-10-24 22:04:50,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:04:50,132 INFO L481 AbstractCegarLoop]: Abstraction has 16825 states and 21830 transitions. [2018-10-24 22:04:50,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:04:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 16825 states and 21830 transitions. [2018-10-24 22:04:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-24 22:04:50,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:50,172 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 22:04:50,173 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:50,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1522548143, now seen corresponding path program 1 times [2018-10-24 22:04:50,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:50,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:50,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:50,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:50,543 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 22:04:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 257 proven. 311 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-24 22:04:51,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:04:51,295 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:04:51,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 530 with the following transitions: [2018-10-24 22:04:51,295 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:04:51,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:04:51,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:04:52,673 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:05:03,849 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:05:03,849 INFO L272 AbstractInterpreter]: Visited 149 different actions 438 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:05:03,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:05:03,854 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:05:09,252 INFO L232 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 77.67% of their original sizes. [2018-10-24 22:05:09,252 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:06:23,277 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:06:23,282 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:06:23,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:06:23 BoogieIcfgContainer [2018-10-24 22:06:23,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:06:23,283 INFO L168 Benchmark]: Toolchain (without parser) took 222538.52 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 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 652.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:23,284 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:06:23,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1126.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:23,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 342.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:23,287 INFO L168 Benchmark]: Boogie Preprocessor took 188.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:23,288 INFO L168 Benchmark]: RCFGBuilder took 6433.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 246.6 MB). Peak memory consumption was 246.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:23,289 INFO L168 Benchmark]: TraceAbstraction took 214442.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 412.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:23,294 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 1126.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 342.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6433.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 246.6 MB). Peak memory consumption was 246.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214442.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 412.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was analyzing trace of length 530 with TraceHistMax 5,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 214.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 109.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1210 SDtfs, 9675 SDslu, 991 SDs, 0 SdLazy, 13889 SolverSat, 4639 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 66.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 489 GetRequests, 445 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16825occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9970232725960669 AbsIntWeakeningRatio, 0.07261410788381743 AbsIntAvgWeakeningVarsNumRemoved, 549.5342323651453 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 167 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1401 NumberOfCodeBlocks, 1401 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1394 ConstructedInterpolants, 0 QuantifiedInterpolants, 1177049 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 723/838 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown