java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:31:46,897 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:31:46,900 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:31:46,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:31:46,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:31:46,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:31:46,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:31:46,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:31:46,919 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:31:46,920 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:31:46,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:31:46,922 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:31:46,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:31:46,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:31:46,926 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:31:46,929 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:31:46,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:31:46,940 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:31:46,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:31:46,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:31:46,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:31:46,950 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:31:46,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:31:46,969 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 22:31:46,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:31:46,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:31:46,999 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:31:47,000 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:31:47,001 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:31:47,001 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:31:47,001 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:31:47,001 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:31:47,001 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:31:47,002 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:31:47,002 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:31:47,002 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:31:47,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:31:47,003 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:31:47,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:31:47,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:31:47,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:31:47,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:31:47,004 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:31:47,004 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:31:47,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:31:47,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:31:47,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:31:47,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:31:47,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:31:47,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:31:47,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:31:47,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:31:47,008 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:31:47,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:31:47,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:31:47,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:31:47,009 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:31:47,009 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:31:47,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:31:47,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:31:47,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:31:47,078 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:31:47,079 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:31:47,080 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c [2018-10-24 22:31:47,145 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca15da63b/7ab8c9e0a98f48bc8788e1a3ce22b583/FLAG658fa6156 [2018-10-24 22:31:48,010 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:31:48,012 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c [2018-10-24 22:31:48,060 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca15da63b/7ab8c9e0a98f48bc8788e1a3ce22b583/FLAG658fa6156 [2018-10-24 22:31:48,080 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca15da63b/7ab8c9e0a98f48bc8788e1a3ce22b583 [2018-10-24 22:31:48,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:31:48,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:31:48,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:31:48,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:31:48,104 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:31:48,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:31:48" (1/1) ... [2018-10-24 22:31:48,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d873a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:48, skipping insertion in model container [2018-10-24 22:31:48,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:31:48" (1/1) ... [2018-10-24 22:31:48,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:31:48,399 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:31:50,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:31:50,361 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:31:51,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:31:51,530 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:31:51,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51 WrapperNode [2018-10-24 22:31:51,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:31:51,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:31:51,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:31:51,532 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:31:51,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:51,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:31:52,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:31:52,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:31:52,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:31:52,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (1/1) ... [2018-10-24 22:31:52,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:31:52,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:31:52,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:31:52,738 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:31:52,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (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 22:31:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:31:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:31:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:31:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:31:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:31:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:31:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:31:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:31:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:31:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:31:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:31:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:31:52,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:31:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:31:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:31:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:31:52,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:31:52,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:32:13,605 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:32:13,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:32:13 BoogieIcfgContainer [2018-10-24 22:32:13,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:32:13,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:32:13,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:32:13,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:32:13,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:31:48" (1/3) ... [2018-10-24 22:32:13,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7a0017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:32:13, skipping insertion in model container [2018-10-24 22:32:13,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:51" (2/3) ... [2018-10-24 22:32:13,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7a0017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:32:13, skipping insertion in model container [2018-10-24 22:32:13,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:32:13" (3/3) ... [2018-10-24 22:32:13,616 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label45_true-unreach-call.c [2018-10-24 22:32:13,626 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:32:13,637 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:32:13,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:32:13,707 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:32:13,707 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:32:13,707 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:32:13,708 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:32:13,708 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:32:13,708 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:32:13,708 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:32:13,708 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:32:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:32:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 22:32:13,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:13,778 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:32:13,780 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:13,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1607603996, now seen corresponding path program 1 times [2018-10-24 22:32:13,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:13,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:13,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:13,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:13,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:14,364 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 22:32:14,403 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 22:32:14,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:14,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:32:14,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:14,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:32:14,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:32:14,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:32:14,459 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-24 22:32:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:40,877 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-10-24 22:32:40,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:32:40,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-24 22:32:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:40,929 INFO L225 Difference]: With dead ends: 6465 [2018-10-24 22:32:40,929 INFO L226 Difference]: Without dead ends: 4681 [2018-10-24 22:32:40,945 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 22:32:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-10-24 22:32:41,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-10-24 22:32:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-10-24 22:32:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-10-24 22:32:41,321 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 54 [2018-10-24 22:32:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:41,322 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-10-24 22:32:41,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:32:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-10-24 22:32:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 22:32:41,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:41,331 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, 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] [2018-10-24 22:32:41,331 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:41,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1301823847, now seen corresponding path program 1 times [2018-10-24 22:32:41,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:41,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:41,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:41,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:41,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:41,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:41,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:41,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:41,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:41,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:41,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:41,672 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-10-24 22:33:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:33:11,014 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-10-24 22:33:11,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:33:11,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-24 22:33:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:33:11,069 INFO L225 Difference]: With dead ends: 12097 [2018-10-24 22:33:11,069 INFO L226 Difference]: Without dead ends: 8903 [2018-10-24 22:33:11,085 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 22:33:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-10-24 22:33:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-10-24 22:33:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-10-24 22:33:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-10-24 22:33:11,525 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 126 [2018-10-24 22:33:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:33:11,526 INFO L481 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-10-24 22:33:11,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:33:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-10-24 22:33:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 22:33:11,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:33:11,541 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, 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] [2018-10-24 22:33:11,541 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:33:11,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:33:11,542 INFO L82 PathProgramCache]: Analyzing trace with hash -13978768, now seen corresponding path program 1 times [2018-10-24 22:33:11,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:33:11,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:11,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:33:11,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:11,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:33:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:33:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:33:11,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:33:11,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:33:11,833 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:33:11,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:33:11,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:33:11,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:33:11,835 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-10-24 22:33:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:33:38,931 INFO L93 Difference]: Finished difference Result 29431 states and 43425 transitions. [2018-10-24 22:33:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:33:38,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-24 22:33:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:33:39,013 INFO L225 Difference]: With dead ends: 29431 [2018-10-24 22:33:39,013 INFO L226 Difference]: Without dead ends: 20591 [2018-10-24 22:33:39,052 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 22:33:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20591 states. [2018-10-24 22:33:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20591 to 20435. [2018-10-24 22:33:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20435 states. [2018-10-24 22:33:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20435 states to 20435 states and 28676 transitions. [2018-10-24 22:33:39,565 INFO L78 Accepts]: Start accepts. Automaton has 20435 states and 28676 transitions. Word has length 128 [2018-10-24 22:33:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:33:39,565 INFO L481 AbstractCegarLoop]: Abstraction has 20435 states and 28676 transitions. [2018-10-24 22:33:39,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:33:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 20435 states and 28676 transitions. [2018-10-24 22:33:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 22:33:39,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:33:39,569 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, 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] [2018-10-24 22:33:39,570 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:33:39,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:33:39,570 INFO L82 PathProgramCache]: Analyzing trace with hash 721795799, now seen corresponding path program 1 times [2018-10-24 22:33:39,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:33:39,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:39,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:33:39,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:39,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:33:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:33:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:33:40,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:33:40,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:33:40,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:33:40,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:33:40,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:33:40,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:33:40,039 INFO L87 Difference]: Start difference. First operand 20435 states and 28676 transitions. Second operand 6 states. [2018-10-24 22:34:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:34:06,687 INFO L93 Difference]: Finished difference Result 62260 states and 89704 transitions. [2018-10-24 22:34:06,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:34:06,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 22:34:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:34:06,844 INFO L225 Difference]: With dead ends: 62260 [2018-10-24 22:34:06,844 INFO L226 Difference]: Without dead ends: 41831 [2018-10-24 22:34:06,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:34:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41831 states. [2018-10-24 22:34:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41831 to 41494. [2018-10-24 22:34:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41494 states. [2018-10-24 22:34:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41494 states to 41494 states and 57737 transitions. [2018-10-24 22:34:07,725 INFO L78 Accepts]: Start accepts. Automaton has 41494 states and 57737 transitions. Word has length 136 [2018-10-24 22:34:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:34:07,725 INFO L481 AbstractCegarLoop]: Abstraction has 41494 states and 57737 transitions. [2018-10-24 22:34:07,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:34:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 41494 states and 57737 transitions. [2018-10-24 22:34:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 22:34:07,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:34:07,730 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:34:07,730 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:34:07,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:34:07,730 INFO L82 PathProgramCache]: Analyzing trace with hash -179031743, now seen corresponding path program 1 times [2018-10-24 22:34:07,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:34:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:07,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:34:07,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:07,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:34:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:34:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:34:08,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:34:08,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:34:08,054 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:34:08,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:34:08,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:34:08,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:34:08,056 INFO L87 Difference]: Start difference. First operand 41494 states and 57737 transitions. Second operand 5 states. [2018-10-24 22:34:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:34:41,022 INFO L93 Difference]: Finished difference Result 125857 states and 180453 transitions. [2018-10-24 22:34:41,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:34:41,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2018-10-24 22:34:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:34:41,288 INFO L225 Difference]: With dead ends: 125857 [2018-10-24 22:34:41,288 INFO L226 Difference]: Without dead ends: 84369 [2018-10-24 22:34:41,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:34:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84369 states. [2018-10-24 22:34:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84369 to 83169. [2018-10-24 22:34:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83169 states. [2018-10-24 22:34:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83169 states to 83169 states and 107235 transitions. [2018-10-24 22:34:42,742 INFO L78 Accepts]: Start accepts. Automaton has 83169 states and 107235 transitions. Word has length 156 [2018-10-24 22:34:42,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:34:42,743 INFO L481 AbstractCegarLoop]: Abstraction has 83169 states and 107235 transitions. [2018-10-24 22:34:42,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:34:42,743 INFO L276 IsEmpty]: Start isEmpty. Operand 83169 states and 107235 transitions. [2018-10-24 22:34:42,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-24 22:34:42,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:34:42,750 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, 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] [2018-10-24 22:34:42,750 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:34:42,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:34:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1693657294, now seen corresponding path program 1 times [2018-10-24 22:34:42,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:34:42,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:42,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:34:42,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:42,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:34:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:34:43,089 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:34:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:34:43,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:34:43,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:34:43,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:34:43,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:34:43,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:34:43,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:34:43,769 INFO L87 Difference]: Start difference. First operand 83169 states and 107235 transitions. Second operand 6 states. [2018-10-24 22:35:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:35:01,177 INFO L93 Difference]: Finished difference Result 188143 states and 253170 transitions. [2018-10-24 22:35:01,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:35:01,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2018-10-24 22:35:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:35:01,458 INFO L225 Difference]: With dead ends: 188143 [2018-10-24 22:35:01,459 INFO L226 Difference]: Without dead ends: 104980 [2018-10-24 22:35:01,560 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 22:35:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104980 states. [2018-10-24 22:35:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104980 to 104217. [2018-10-24 22:35:03,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104217 states. [2018-10-24 22:35:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104217 states to 104217 states and 134743 transitions. [2018-10-24 22:35:03,225 INFO L78 Accepts]: Start accepts. Automaton has 104217 states and 134743 transitions. Word has length 219 [2018-10-24 22:35:03,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:35:03,225 INFO L481 AbstractCegarLoop]: Abstraction has 104217 states and 134743 transitions. [2018-10-24 22:35:03,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:35:03,226 INFO L276 IsEmpty]: Start isEmpty. Operand 104217 states and 134743 transitions. [2018-10-24 22:35:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-10-24 22:35:03,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:35:03,240 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:35:03,240 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:35:03,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:35:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2000312291, now seen corresponding path program 1 times [2018-10-24 22:35:03,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:35:03,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:35:03,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:35:03,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:35:03,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:35:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:35:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:35:03,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:35:03,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:35:03,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:35:03,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:35:03,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:35:03,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:35:03,826 INFO L87 Difference]: Start difference. First operand 104217 states and 134743 transitions. Second operand 4 states. [2018-10-24 22:35:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:35:32,351 INFO L93 Difference]: Finished difference Result 296495 states and 401623 transitions. [2018-10-24 22:35:32,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:35:32,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 541 [2018-10-24 22:35:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:35:32,859 INFO L225 Difference]: With dead ends: 296495 [2018-10-24 22:35:32,860 INFO L226 Difference]: Without dead ends: 192284 [2018-10-24 22:35:33,010 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 22:35:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192284 states. [2018-10-24 22:35:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192284 to 191986. [2018-10-24 22:35:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191986 states. [2018-10-24 22:35:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191986 states to 191986 states and 250128 transitions. [2018-10-24 22:35:36,377 INFO L78 Accepts]: Start accepts. Automaton has 191986 states and 250128 transitions. Word has length 541 [2018-10-24 22:35:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:35:36,378 INFO L481 AbstractCegarLoop]: Abstraction has 191986 states and 250128 transitions. [2018-10-24 22:35:36,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:35:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 191986 states and 250128 transitions. [2018-10-24 22:35:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-10-24 22:35:36,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:35:36,407 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:35:36,407 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:35:36,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:35:36,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1092730453, now seen corresponding path program 1 times [2018-10-24 22:35:36,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:35:36,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:35:36,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:35:36,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:35:36,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:35:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:35:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:35:37,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:35:37,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:35:37,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:35:37,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:35:37,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:35:37,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:35:37,015 INFO L87 Difference]: Start difference. First operand 191986 states and 250128 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 22:35:46,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:35:46,833 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:35:46,839 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:35:46,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:35:46 BoogieIcfgContainer [2018-10-24 22:35:46,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:35:46,841 INFO L168 Benchmark]: Toolchain (without parser) took 238745.48 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:35:46,842 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 22:35:46,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3433.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:46,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 744.78 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:46,844 INFO L168 Benchmark]: Boogie Preprocessor took 460.81 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:46,845 INFO L168 Benchmark]: RCFGBuilder took 20868.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 143.1 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 544.9 MB). Peak memory consumption was 688.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:46,846 INFO L168 Benchmark]: TraceAbstraction took 213232.26 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 933.8 MB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -498.3 MB). Peak memory consumption was 435.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:46,851 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 3433.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 744.78 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 460.81 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20868.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 143.1 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 544.9 MB). Peak memory consumption was 688.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213232.26 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 933.8 MB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -498.3 MB). Peak memory consumption was 435.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was constructing difference of abstraction (191986states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (108646 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 213.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 200.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7004 SDtfs, 48025 SDslu, 5342 SDs, 0 SdLazy, 75257 SolverSat, 19499 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 170.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191986occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 4292 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 2008 NumberOfCodeBlocks, 2008 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2000 ConstructedInterpolants, 0 QuantifiedInterpolants, 1429224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 329/329 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown