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/Problem18_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:57:32,619 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:57:32,622 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:57:32,636 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:57:32,636 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:57:32,637 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:57:32,639 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:57:32,641 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:57:32,642 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:57:32,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:57:32,644 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:57:32,644 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:57:32,645 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:57:32,646 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:57:32,647 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:57:32,648 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:57:32,649 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:57:32,651 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:57:32,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:57:32,655 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:57:32,656 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:57:32,657 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:57:32,663 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:57:32,673 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:57:32,673 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:57:32,674 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:57:32,675 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:57:32,675 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 18:57:32,693 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:57:32,693 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:57:32,694 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:57:32,694 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:57:32,695 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:57:32,695 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:57:32,695 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:57:32,695 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:57:32,695 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:57:32,696 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:57:32,696 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:57:32,696 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:57:32,697 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:57:32,697 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:57:32,697 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:57:32,697 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:57:32,697 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:57:32,698 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:57:32,698 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:57:32,698 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:57:32,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:57:32,698 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:57:32,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:57:32,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:57:32,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:57:32,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:57:32,699 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:57:32,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:57:32,700 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:57:32,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:57:32,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:57:32,700 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:57:32,700 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:57:32,701 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:57:32,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:57:32,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:57:32,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:57:32,780 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:57:32,780 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:57:32,781 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08_false-unreach-call.c [2018-10-24 18:57:32,841 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1644ec061/b2c0279490d143b4b791db65993aafd1/FLAGdc14b1543 [2018-10-24 18:57:33,541 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:57:33,542 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label08_false-unreach-call.c [2018-10-24 18:57:33,568 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1644ec061/b2c0279490d143b4b791db65993aafd1/FLAGdc14b1543 [2018-10-24 18:57:33,588 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1644ec061/b2c0279490d143b4b791db65993aafd1 [2018-10-24 18:57:33,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:57:33,603 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:57:33,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:33,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:57:33,610 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:57:33,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:33" (1/1) ... [2018-10-24 18:57:33,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:33, skipping insertion in model container [2018-10-24 18:57:33,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:33" (1/1) ... [2018-10-24 18:57:33,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:57:33,771 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:57:34,835 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:34,841 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:57:35,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:35,323 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:57:35,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35 WrapperNode [2018-10-24 18:57:35,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:35,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:35,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:57:35,326 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:57:35,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:35,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:57:35,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:57:35,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:57:35,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (1/1) ... [2018-10-24 18:57:35,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:57:35,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:57:35,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:57:35,968 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:57:35,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (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 18:57:36,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:57:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:57:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:57:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:57:36,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:57:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:57:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:57:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:57:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:57:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:57:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:57:36,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:57:43,818 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:57:43,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:43 BoogieIcfgContainer [2018-10-24 18:57:43,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:57:43,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:57:43,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:57:43,824 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:57:43,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:57:33" (1/3) ... [2018-10-24 18:57:43,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:43, skipping insertion in model container [2018-10-24 18:57:43,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:35" (2/3) ... [2018-10-24 18:57:43,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:43, skipping insertion in model container [2018-10-24 18:57:43,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:43" (3/3) ... [2018-10-24 18:57:43,829 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label08_false-unreach-call.c [2018-10-24 18:57:43,840 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:57:43,851 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:57:43,869 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:57:43,918 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:57:43,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:57:43,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:57:43,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:57:43,919 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:57:43,919 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:57:43,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:57:43,920 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:57:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:57:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 18:57:43,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:43,978 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] [2018-10-24 18:57:43,980 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:43,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:43,987 INFO L82 PathProgramCache]: Analyzing trace with hash 735211228, now seen corresponding path program 1 times [2018-10-24 18:57:43,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:44,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:44,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:44,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:44,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:44,426 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 18:57:44,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:44,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:57:44,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:44,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:57:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:57:44,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:57:44,460 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 18:57:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:55,147 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 18:57:55,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:57:55,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-24 18:57:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:55,193 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 18:57:55,193 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 18:57:55,206 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 18:57:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 18:57:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-24 18:57:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 18:57:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-24 18:57:55,399 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 28 [2018-10-24 18:57:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:55,400 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-24 18:57:55,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:57:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-24 18:57:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:57:55,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:55,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:55,408 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:55,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:55,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1723286230, now seen corresponding path program 1 times [2018-10-24 18:57:55,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:55,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:55,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:55,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:55,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:55,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:55,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:57:55,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:55,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:57:55,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:57:55,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:57:55,822 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-24 18:58:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:05,634 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-24 18:58:05,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:05,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-24 18:58:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:05,665 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 18:58:05,666 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 18:58:05,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:58:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 18:58:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-24 18:58:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-24 18:58:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-24 18:58:05,795 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 98 [2018-10-24 18:58:05,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:05,796 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-24 18:58:05,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:58:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-24 18:58:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 18:58:05,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:05,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:05,801 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:05,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 374879586, now seen corresponding path program 1 times [2018-10-24 18:58:05,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:05,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:05,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:05,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:05,803 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:06,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:06,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:06,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:06,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:06,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:06,077 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-24 18:58:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:14,523 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-10-24 18:58:14,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:14,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 18:58:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:14,676 INFO L225 Difference]: With dead ends: 10279 [2018-10-24 18:58:14,676 INFO L226 Difference]: Without dead ends: 7355 [2018-10-24 18:58:14,693 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 18:58:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-10-24 18:58:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-10-24 18:58:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-10-24 18:58:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-10-24 18:58:14,914 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 102 [2018-10-24 18:58:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:14,915 INFO L481 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-10-24 18:58:14,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-10-24 18:58:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 18:58:14,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:14,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:14,926 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:14,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:14,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1832820439, now seen corresponding path program 1 times [2018-10-24 18:58:14,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:14,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:14,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:14,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:14,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:15,257 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:58:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:15,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:15,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:15,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:15,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:15,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:15,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:15,381 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-10-24 18:58:23,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:23,015 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-10-24 18:58:23,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:23,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-24 18:58:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:23,075 INFO L225 Difference]: With dead ends: 18993 [2018-10-24 18:58:23,076 INFO L226 Difference]: Without dead ends: 11703 [2018-10-24 18:58:23,114 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 18:58:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-10-24 18:58:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-10-24 18:58:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-10-24 18:58:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-10-24 18:58:23,532 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 123 [2018-10-24 18:58:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:23,533 INFO L481 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-10-24 18:58:23,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-10-24 18:58:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 18:58:23,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:23,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:23,536 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:23,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:23,536 INFO L82 PathProgramCache]: Analyzing trace with hash 407388415, now seen corresponding path program 1 times [2018-10-24 18:58:23,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:23,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:23,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:23,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:23,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:23,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:23,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:58:23,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:23,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:58:23,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:58:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:58:23,759 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 4 states. [2018-10-24 18:58:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:30,572 INFO L93 Difference]: Finished difference Result 27522 states and 38221 transitions. [2018-10-24 18:58:30,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:58:30,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-10-24 18:58:30,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:30,643 INFO L225 Difference]: With dead ends: 27522 [2018-10-24 18:58:30,643 INFO L226 Difference]: Without dead ends: 15889 [2018-10-24 18:58:30,690 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 18:58:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15889 states. [2018-10-24 18:58:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15889 to 15886. [2018-10-24 18:58:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15886 states. [2018-10-24 18:58:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15886 states to 15886 states and 19859 transitions. [2018-10-24 18:58:30,974 INFO L78 Accepts]: Start accepts. Automaton has 15886 states and 19859 transitions. Word has length 135 [2018-10-24 18:58:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:30,975 INFO L481 AbstractCegarLoop]: Abstraction has 15886 states and 19859 transitions. [2018-10-24 18:58:30,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:58:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15886 states and 19859 transitions. [2018-10-24 18:58:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 18:58:30,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:30,980 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:58:30,980 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:30,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:30,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117645, now seen corresponding path program 1 times [2018-10-24 18:58:30,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:30,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:30,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:30,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:30,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 18:58:31,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:31,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:58:31,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:31,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:58:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:58:31,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:58:31,439 INFO L87 Difference]: Start difference. First operand 15886 states and 19859 transitions. Second operand 4 states. [2018-10-24 18:58:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:39,216 INFO L93 Difference]: Finished difference Result 58570 states and 75868 transitions. [2018-10-24 18:58:39,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:58:39,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-24 18:58:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:39,381 INFO L225 Difference]: With dead ends: 58570 [2018-10-24 18:58:39,382 INFO L226 Difference]: Without dead ends: 42690 [2018-10-24 18:58:39,428 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 18:58:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42690 states. [2018-10-24 18:58:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42690 to 40570. [2018-10-24 18:58:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40570 states. [2018-10-24 18:58:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40570 states to 40570 states and 50550 transitions. [2018-10-24 18:58:40,700 INFO L78 Accepts]: Start accepts. Automaton has 40570 states and 50550 transitions. Word has length 205 [2018-10-24 18:58:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:40,700 INFO L481 AbstractCegarLoop]: Abstraction has 40570 states and 50550 transitions. [2018-10-24 18:58:40,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:58:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 40570 states and 50550 transitions. [2018-10-24 18:58:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-24 18:58:40,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:40,711 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:58:40,712 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:40,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:40,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1838878876, now seen corresponding path program 1 times [2018-10-24 18:58:40,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:40,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:40,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:40,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:40,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-24 18:58:41,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:41,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:58:41,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:41,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:58:41,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:58:41,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:58:41,004 INFO L87 Difference]: Start difference. First operand 40570 states and 50550 transitions. Second operand 4 states. [2018-10-24 18:58:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:48,238 INFO L93 Difference]: Finished difference Result 91037 states and 114482 transitions. [2018-10-24 18:58:48,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:58:48,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2018-10-24 18:58:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:48,429 INFO L225 Difference]: With dead ends: 91037 [2018-10-24 18:58:48,429 INFO L226 Difference]: Without dead ends: 50473 [2018-10-24 18:58:48,512 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 18:58:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50473 states. [2018-10-24 18:58:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50473 to 49061. [2018-10-24 18:58:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49061 states. [2018-10-24 18:58:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49061 states to 49061 states and 57553 transitions. [2018-10-24 18:58:49,858 INFO L78 Accepts]: Start accepts. Automaton has 49061 states and 57553 transitions. Word has length 286 [2018-10-24 18:58:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:49,858 INFO L481 AbstractCegarLoop]: Abstraction has 49061 states and 57553 transitions. [2018-10-24 18:58:49,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:58:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 49061 states and 57553 transitions. [2018-10-24 18:58:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-24 18:58:49,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:49,892 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:58:49,892 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:49,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:49,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1221704300, now seen corresponding path program 1 times [2018-10-24 18:58:49,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:49,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:49,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:49,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:49,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:50,455 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-24 18:58:50,829 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 18:58:51,038 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-24 18:58:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 42 proven. 157 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:58:51,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:58:51,388 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:58:51,389 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 415 with the following transitions: [2018-10-24 18:58:51,392 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1747], [1749], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2484], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:58:51,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:58:51,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:58:57,680 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:58:57,803 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:58:57,805 INFO L272 AbstractInterpreter]: Visited 229 different actions 229 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:58:57,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:57,827 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:59:01,176 INFO L232 lantSequenceWeakener]: Weakened 406 states. On average, predicates are now at 77.43% of their original sizes. [2018-10-24 18:59:01,181 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:59:01,515 INFO L413 sIntCurrentIteration]: We have 413 unified AI predicates [2018-10-24 18:59:01,516 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:59:01,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:59:01,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 18:59:01,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:59:01,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:59:01,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:59:01,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:59:01,518 INFO L87 Difference]: Start difference. First operand 49061 states and 57553 transitions. Second operand 8 states. [2018-10-24 19:01:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:01:05,972 INFO L93 Difference]: Finished difference Result 98821 states and 115925 transitions. [2018-10-24 19:01:05,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:01:05,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 414 [2018-10-24 19:01:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:01:06,083 INFO L225 Difference]: With dead ends: 98821 [2018-10-24 19:01:06,083 INFO L226 Difference]: Without dead ends: 49766 [2018-10-24 19:01:06,158 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 19:01:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49766 states. [2018-10-24 19:01:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49766 to 49764. [2018-10-24 19:01:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49764 states. [2018-10-24 19:01:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49764 states to 49764 states and 58268 transitions. [2018-10-24 19:01:06,960 INFO L78 Accepts]: Start accepts. Automaton has 49764 states and 58268 transitions. Word has length 414 [2018-10-24 19:01:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:01:06,961 INFO L481 AbstractCegarLoop]: Abstraction has 49764 states and 58268 transitions. [2018-10-24 19:01:06,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 19:01:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 49764 states and 58268 transitions. [2018-10-24 19:01:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2018-10-24 19:01:07,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:01:07,002 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:07,002 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:01:07,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:01:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash 453031471, now seen corresponding path program 1 times [2018-10-24 19:01:07,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:01:07,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:07,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:07,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:01:07,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:01:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:07,611 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:01:07,826 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:01:08,027 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 19:01:08,444 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 19:01:09,018 WARN L179 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-24 19:01:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 122 proven. 447 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:01:09,690 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:01:09,690 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:01:09,690 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 602 with the following transitions: [2018-10-24 19:01:09,691 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1747], [1749], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2484], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 19:01:09,701 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:01:09,701 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 19:01:12,892 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 19:01:12,892 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 19:01:12,893 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 19:01:12,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:01:12,894 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 19:01:12,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:01:12,902 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 19:01:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:01:13,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 19:01:13,106 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 19:01:13,307 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 19:01:13,308 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:01:13,312 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:01:13,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:01:13 BoogieIcfgContainer [2018-10-24 19:01:13,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:01:13,313 INFO L168 Benchmark]: Toolchain (without parser) took 219711.05 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:01:13,315 INFO L168 Benchmark]: CDTParser took 0.21 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 19:01:13,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1720.27 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:13,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 431.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.0 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:13,317 INFO L168 Benchmark]: Boogie Preprocessor took 210.05 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:13,318 INFO L168 Benchmark]: RCFGBuilder took 7852.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 494.5 MB). Peak memory consumption was 494.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:13,319 INFO L168 Benchmark]: TraceAbstraction took 209492.17 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -840.8 MB). Peak memory consumption was 975.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:13,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1720.27 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 431.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.0 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.05 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7852.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 494.5 MB). Peak memory consumption was 494.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209492.17 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -840.8 MB). Peak memory consumption was 975.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was analyzing trace of length 602 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 209.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 184.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3445 SDtfs, 15955 SDslu, 1355 SDs, 0 SdLazy, 36728 SolverSat, 9222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 465 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49764occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.6s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9975567603607397 AbsIntWeakeningRatio, 0.06295399515738499 AbsIntAvgWeakeningVarsNumRemoved, 910.1573849878935 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 4403 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1391 NumberOfCodeBlocks, 1391 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1383 ConstructedInterpolants, 0 QuantifiedInterpolants, 2153327 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 392/549 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown