java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:27:25,900 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:27:25,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:27:25,915 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:27:25,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:27:25,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:27:25,917 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:27:25,919 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:27:25,921 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:27:25,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:27:25,922 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:27:25,923 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:27:25,924 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:27:25,925 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:27:25,926 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:27:25,927 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:27:25,927 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:27:25,929 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:27:25,931 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:27:25,933 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:27:25,934 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:27:25,935 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:27:25,938 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 17:27:25,944 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:27:25,945 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:27:25,946 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:27:25,946 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:27:25,947 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:27:25,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:27:25,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:27:25,963 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:27:25,964 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:27:25,964 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:27:25,964 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:27:25,964 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:27:25,965 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:27:25,965 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:27:25,965 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:27:25,965 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:27:25,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:27:25,966 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:27:25,966 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:27:25,967 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:27:25,967 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:27:25,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:27:25,967 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:27:25,967 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:27:25,968 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:27:25,968 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:27:25,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:27:25,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:27:25,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:27:25,969 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:27:25,969 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:27:25,969 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:27:25,969 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:27:25,969 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:27:25,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:27:25,970 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:27:25,970 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:27:25,970 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:27:26,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:27:26,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:27:26,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:27:26,043 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:27:26,043 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:27:26,044 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-09-14 17:27:26,399 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5700541e3/5fa50d70c57e49dc9d58244b93c5e534/FLAG9f66688a6 [2018-09-14 17:27:26,854 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:27:26,855 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-09-14 17:27:26,891 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5700541e3/5fa50d70c57e49dc9d58244b93c5e534/FLAG9f66688a6 [2018-09-14 17:27:26,912 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5700541e3/5fa50d70c57e49dc9d58244b93c5e534 [2018-09-14 17:27:26,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:27:26,929 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:27:26,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:27:26,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:27:26,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:27:26,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:27:26" (1/1) ... [2018-09-14 17:27:26,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:26, skipping insertion in model container [2018-09-14 17:27:26,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:27:26" (1/1) ... [2018-09-14 17:27:26,954 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:27:28,215 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:27:28,235 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:27:28,806 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:27:29,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29 WrapperNode [2018-09-14 17:27:29,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:27:29,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:27:29,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:27:29,053 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:27:29,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:29,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:29,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:27:29,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:27:29,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:27:29,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:27:29,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:29,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:29,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:29,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:30,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:30,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:30,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... [2018-09-14 17:27:30,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:27:30,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:27:30,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:27:30,224 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:27:30,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 17:27:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:27:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:27:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:27:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:27:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:27:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:27:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:27:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:27:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:27:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:27:30,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:27:30,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:27:30,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:27:30,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:27:42,323 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:27:42,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:27:42 BoogieIcfgContainer [2018-09-14 17:27:42,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:27:42,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:27:42,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:27:42,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:27:42,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:27:26" (1/3) ... [2018-09-14 17:27:42,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae9c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:27:42, skipping insertion in model container [2018-09-14 17:27:42,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:27:29" (2/3) ... [2018-09-14 17:27:42,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fae9c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:27:42, skipping insertion in model container [2018-09-14 17:27:42,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:27:42" (3/3) ... [2018-09-14 17:27:42,336 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label59_true-unreach-call.c [2018-09-14 17:27:42,346 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:27:42,358 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:27:42,431 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:27:42,432 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:27:42,432 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:27:42,433 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:27:42,433 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:27:42,433 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:27:42,433 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:27:42,433 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:27:42,433 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:27:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:27:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-14 17:27:42,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:42,490 INFO L376 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] [2018-09-14 17:27:42,492 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:42,496 INFO L82 PathProgramCache]: Analyzing trace with hash -320389013, now seen corresponding path program 1 times [2018-09-14 17:27:42,499 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:42,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:42,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:42,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:42,554 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:43,003 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:27:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:43,136 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:27:43,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:27:43,136 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:43,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:27:43,160 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:27:43,161 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:27:43,166 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:27:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:50,897 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:27:50,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:27:50,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-09-14 17:27:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:50,942 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:27:50,942 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:27:50,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:27:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:27:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:27:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:27:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3014 transitions. [2018-09-14 17:27:51,116 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3014 transitions. Word has length 51 [2018-09-14 17:27:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:51,116 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3014 transitions. [2018-09-14 17:27:51,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:27:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3014 transitions. [2018-09-14 17:27:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-14 17:27:51,129 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:51,130 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:27:51,130 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:51,130 INFO L82 PathProgramCache]: Analyzing trace with hash -66311172, now seen corresponding path program 1 times [2018-09-14 17:27:51,131 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:51,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:51,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:51,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:51,133 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:51,481 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:27:51,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:27:51,482 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:51,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:27:51,484 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:27:51,484 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:27:51,484 INFO L87 Difference]: Start difference. First operand 1604 states and 3014 transitions. Second operand 5 states. [2018-09-14 17:28:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:02,724 INFO L93 Difference]: Finished difference Result 4873 states and 9168 transitions. [2018-09-14 17:28:02,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:28:02,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-09-14 17:28:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:02,760 INFO L225 Difference]: With dead ends: 4873 [2018-09-14 17:28:02,760 INFO L226 Difference]: Without dead ends: 3275 [2018-09-14 17:28:02,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:28:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-09-14 17:28:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-09-14 17:28:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-09-14 17:28:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5443 transitions. [2018-09-14 17:28:02,916 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5443 transitions. Word has length 121 [2018-09-14 17:28:02,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:02,917 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 5443 transitions. [2018-09-14 17:28:02,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:28:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5443 transitions. [2018-09-14 17:28:02,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-14 17:28:02,924 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:02,925 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:02,925 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:02,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1119739496, now seen corresponding path program 1 times [2018-09-14 17:28:02,925 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:02,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:02,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:02,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:02,930 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:03,272 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:03,272 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 17:28:03,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:03,283 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:03,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:03,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:03,866 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:28:03,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-14 17:28:03,867 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:03,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:28:03,868 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:28:03,869 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:28:03,869 INFO L87 Difference]: Start difference. First operand 3241 states and 5443 transitions. Second operand 3 states. [2018-09-14 17:28:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:10,757 INFO L93 Difference]: Finished difference Result 9583 states and 16414 transitions. [2018-09-14 17:28:10,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:28:10,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-09-14 17:28:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:10,806 INFO L225 Difference]: With dead ends: 9583 [2018-09-14 17:28:10,806 INFO L226 Difference]: Without dead ends: 6348 [2018-09-14 17:28:10,824 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 254 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:28:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2018-09-14 17:28:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6348. [2018-09-14 17:28:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6348 states. [2018-09-14 17:28:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9511 transitions. [2018-09-14 17:28:10,996 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9511 transitions. Word has length 127 [2018-09-14 17:28:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:10,996 INFO L480 AbstractCegarLoop]: Abstraction has 6348 states and 9511 transitions. [2018-09-14 17:28:10,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:28:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9511 transitions. [2018-09-14 17:28:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-14 17:28:11,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:11,000 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:11,001 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:11,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1996073879, now seen corresponding path program 1 times [2018-09-14 17:28:11,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:11,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:11,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:11,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:11,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:11,275 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:28:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:11,562 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:11,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:28:11,562 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:11,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:28:11,563 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:28:11,563 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:28:11,564 INFO L87 Difference]: Start difference. First operand 6348 states and 9511 transitions. Second operand 6 states. [2018-09-14 17:28:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:21,201 INFO L93 Difference]: Finished difference Result 15974 states and 23458 transitions. [2018-09-14 17:28:21,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:28:21,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-14 17:28:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:21,248 INFO L225 Difference]: With dead ends: 15974 [2018-09-14 17:28:21,248 INFO L226 Difference]: Without dead ends: 9632 [2018-09-14 17:28:21,272 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:28:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-09-14 17:28:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9612. [2018-09-14 17:28:21,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9612 states. [2018-09-14 17:28:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9612 states to 9612 states and 13075 transitions. [2018-09-14 17:28:21,516 INFO L78 Accepts]: Start accepts. Automaton has 9612 states and 13075 transitions. Word has length 136 [2018-09-14 17:28:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:21,517 INFO L480 AbstractCegarLoop]: Abstraction has 9612 states and 13075 transitions. [2018-09-14 17:28:21,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:28:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 9612 states and 13075 transitions. [2018-09-14 17:28:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-14 17:28:21,521 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:21,524 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:21,525 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash 977865397, now seen corresponding path program 1 times [2018-09-14 17:28:21,525 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:21,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:21,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:21,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:21,528 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:21,842 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:28:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:22,190 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:22,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:28:22,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:22,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:28:22,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:28:22,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:28:22,192 INFO L87 Difference]: Start difference. First operand 9612 states and 13075 transitions. Second operand 6 states. [2018-09-14 17:28:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:33,196 INFO L93 Difference]: Finished difference Result 26233 states and 36750 transitions. [2018-09-14 17:28:33,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:28:33,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-09-14 17:28:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:33,281 INFO L225 Difference]: With dead ends: 26233 [2018-09-14 17:28:33,281 INFO L226 Difference]: Without dead ends: 16627 [2018-09-14 17:28:33,316 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:28:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16627 states. [2018-09-14 17:28:33,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16627 to 16383. [2018-09-14 17:28:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16383 states. [2018-09-14 17:28:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16383 states to 16383 states and 21980 transitions. [2018-09-14 17:28:33,679 INFO L78 Accepts]: Start accepts. Automaton has 16383 states and 21980 transitions. Word has length 158 [2018-09-14 17:28:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:33,680 INFO L480 AbstractCegarLoop]: Abstraction has 16383 states and 21980 transitions. [2018-09-14 17:28:33,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:28:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 16383 states and 21980 transitions. [2018-09-14 17:28:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-14 17:28:33,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:33,685 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:33,685 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1902407537, now seen corresponding path program 1 times [2018-09-14 17:28:33,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:33,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:33,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:33,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:33,687 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:33,976 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:33,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:28:33,976 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:33,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:28:33,977 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:28:33,977 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:28:33,977 INFO L87 Difference]: Start difference. First operand 16383 states and 21980 transitions. Second operand 6 states. [2018-09-14 17:28:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:43,885 INFO L93 Difference]: Finished difference Result 43183 states and 61955 transitions. [2018-09-14 17:28:43,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:28:43,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-09-14 17:28:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:43,980 INFO L225 Difference]: With dead ends: 43183 [2018-09-14 17:28:43,980 INFO L226 Difference]: Without dead ends: 26806 [2018-09-14 17:28:44,026 INFO L604 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 [2018-09-14 17:28:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26806 states. [2018-09-14 17:28:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26806 to 26486. [2018-09-14 17:28:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26486 states. [2018-09-14 17:28:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26486 states to 26486 states and 35504 transitions. [2018-09-14 17:28:44,586 INFO L78 Accepts]: Start accepts. Automaton has 26486 states and 35504 transitions. Word has length 172 [2018-09-14 17:28:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:44,587 INFO L480 AbstractCegarLoop]: Abstraction has 26486 states and 35504 transitions. [2018-09-14 17:28:44,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:28:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 26486 states and 35504 transitions. [2018-09-14 17:28:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-14 17:28:44,592 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:44,593 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:44,593 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:44,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1379065187, now seen corresponding path program 1 times [2018-09-14 17:28:44,593 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:44,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:44,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:44,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:44,594 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:45,356 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:45,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:28:45,357 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:45,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:28:45,357 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:28:45,357 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:28:45,358 INFO L87 Difference]: Start difference. First operand 26486 states and 35504 transitions. Second operand 6 states. [2018-09-14 17:29:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:05,103 INFO L93 Difference]: Finished difference Result 103980 states and 154114 transitions. [2018-09-14 17:29:05,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:29:05,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-09-14 17:29:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:05,372 INFO L225 Difference]: With dead ends: 103980 [2018-09-14 17:29:05,373 INFO L226 Difference]: Without dead ends: 77500 [2018-09-14 17:29:05,464 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:29:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77500 states. [2018-09-14 17:29:06,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77500 to 77354. [2018-09-14 17:29:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77354 states. [2018-09-14 17:29:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77354 states to 77354 states and 106162 transitions. [2018-09-14 17:29:07,157 INFO L78 Accepts]: Start accepts. Automaton has 77354 states and 106162 transitions. Word has length 178 [2018-09-14 17:29:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:07,157 INFO L480 AbstractCegarLoop]: Abstraction has 77354 states and 106162 transitions. [2018-09-14 17:29:07,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:29:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 77354 states and 106162 transitions. [2018-09-14 17:29:07,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-14 17:29:07,161 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:07,162 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:29:07,162 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:07,162 INFO L82 PathProgramCache]: Analyzing trace with hash 73089436, now seen corresponding path program 1 times [2018-09-14 17:29:07,162 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:07,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:07,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:07,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:07,164 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:07,527 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:07,527 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:29:07,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:07,536 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:07,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:08,178 WARN L178 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 487 DAG size of output: 22 [2018-09-14 17:29:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:08,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:08,810 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:29:08,811 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 17:29:08,811 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:08,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:29:08,813 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:29:08,813 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:29:08,813 INFO L87 Difference]: Start difference. First operand 77354 states and 106162 transitions. Second operand 3 states. [2018-09-14 17:29:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:19,989 INFO L93 Difference]: Finished difference Result 182776 states and 256284 transitions. [2018-09-14 17:29:19,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:29:19,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-09-14 17:29:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:20,265 INFO L225 Difference]: With dead ends: 182776 [2018-09-14 17:29:20,265 INFO L226 Difference]: Without dead ends: 105428 [2018-09-14 17:29:20,402 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:29:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105428 states. [2018-09-14 17:29:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105428 to 105333. [2018-09-14 17:29:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105333 states. [2018-09-14 17:29:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105333 states to 105333 states and 141734 transitions. [2018-09-14 17:29:22,880 INFO L78 Accepts]: Start accepts. Automaton has 105333 states and 141734 transitions. Word has length 201 [2018-09-14 17:29:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:22,881 INFO L480 AbstractCegarLoop]: Abstraction has 105333 states and 141734 transitions. [2018-09-14 17:29:22,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:29:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 105333 states and 141734 transitions. [2018-09-14 17:29:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-14 17:29:22,886 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:22,886 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:29:22,887 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:22,887 INFO L82 PathProgramCache]: Analyzing trace with hash 733180128, now seen corresponding path program 1 times [2018-09-14 17:29:22,887 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:22,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:22,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:22,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:22,888 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:23,165 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:29:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:23,237 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:29:23,237 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:29:23,237 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:29:23,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:29:23,237 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:29:23,238 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:29:23,238 INFO L87 Difference]: Start difference. First operand 105333 states and 141734 transitions. Second operand 6 states. [2018-09-14 17:29:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:29:33,665 INFO L93 Difference]: Finished difference Result 256628 states and 367726 transitions. [2018-09-14 17:29:33,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:29:33,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2018-09-14 17:29:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:29:34,093 INFO L225 Difference]: With dead ends: 256628 [2018-09-14 17:29:34,094 INFO L226 Difference]: Without dead ends: 151301 [2018-09-14 17:29:34,251 INFO L604 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 [2018-09-14 17:29:34,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151301 states. [2018-09-14 17:29:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151301 to 150996. [2018-09-14 17:29:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150996 states. [2018-09-14 17:29:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150996 states to 150996 states and 208214 transitions. [2018-09-14 17:29:37,807 INFO L78 Accepts]: Start accepts. Automaton has 150996 states and 208214 transitions. Word has length 219 [2018-09-14 17:29:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:29:37,808 INFO L480 AbstractCegarLoop]: Abstraction has 150996 states and 208214 transitions. [2018-09-14 17:29:37,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:29:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 150996 states and 208214 transitions. [2018-09-14 17:29:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-14 17:29:37,815 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:37,815 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:29:37,815 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash -88101080, now seen corresponding path program 1 times [2018-09-14 17:29:37,816 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:37,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:37,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:37,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:37,817 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:38,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:38,226 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:29:38,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:38,237 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:38,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:38,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:38,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:29:38,618 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:29:38,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:38,633 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:29:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:29:38,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:29:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:38,889 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:29:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:29:39,056 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:29:39,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:29:39,056 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:29:39,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:29:39,057 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:29:39,058 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:29:39,058 INFO L87 Difference]: Start difference. First operand 150996 states and 208214 transitions. Second operand 9 states. [2018-09-14 17:30:06,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:06,760 INFO L93 Difference]: Finished difference Result 452094 states and 845200 transitions. [2018-09-14 17:30:06,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:30:06,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2018-09-14 17:30:06,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:08,051 INFO L225 Difference]: With dead ends: 452094 [2018-09-14 17:30:08,052 INFO L226 Difference]: Without dead ends: 249838 [2018-09-14 17:30:16,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 968 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:30:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249838 states. [2018-09-14 17:30:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249838 to 241971. [2018-09-14 17:30:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241971 states. [2018-09-14 17:30:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241971 states to 241971 states and 348875 transitions. [2018-09-14 17:30:22,649 INFO L78 Accepts]: Start accepts. Automaton has 241971 states and 348875 transitions. Word has length 242 [2018-09-14 17:30:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:22,649 INFO L480 AbstractCegarLoop]: Abstraction has 241971 states and 348875 transitions. [2018-09-14 17:30:22,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:30:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand 241971 states and 348875 transitions. [2018-09-14 17:30:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-09-14 17:30:22,654 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:22,654 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:30:22,654 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:22,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1044267349, now seen corresponding path program 1 times [2018-09-14 17:30:22,655 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:22,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:22,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:22,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:22,656 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:22,896 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:22,896 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:30:22,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:22,905 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:22,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:23,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:23,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:23,219 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:30:23,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:23,236 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:23,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:23,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:23,737 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:30:23,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-09-14 17:30:23,737 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:30:23,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 17:30:23,740 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 17:30:23,740 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:30:23,740 INFO L87 Difference]: Start difference. First operand 241971 states and 348875 transitions. Second operand 8 states. [2018-09-14 17:30:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:42,531 INFO L93 Difference]: Finished difference Result 539467 states and 806380 transitions. [2018-09-14 17:30:42,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:30:42,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2018-09-14 17:30:42,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:44,702 INFO L225 Difference]: With dead ends: 539467 [2018-09-14 17:30:44,703 INFO L226 Difference]: Without dead ends: 297532 [2018-09-14 17:30:45,092 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1133 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:30:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297532 states. [2018-09-14 17:30:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297532 to 292576. [2018-09-14 17:30:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292576 states. [2018-09-14 17:30:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292576 states to 292576 states and 398851 transitions. [2018-09-14 17:30:52,296 INFO L78 Accepts]: Start accepts. Automaton has 292576 states and 398851 transitions. Word has length 285 [2018-09-14 17:30:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:52,297 INFO L480 AbstractCegarLoop]: Abstraction has 292576 states and 398851 transitions. [2018-09-14 17:30:52,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 17:30:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 292576 states and 398851 transitions. [2018-09-14 17:30:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-14 17:30:52,312 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:52,312 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:30:52,312 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:52,313 INFO L82 PathProgramCache]: Analyzing trace with hash -895243371, now seen corresponding path program 1 times [2018-09-14 17:30:52,313 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:52,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:52,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:52,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:52,314 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 88 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:30:52,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:30:52,642 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:30:52,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:52,653 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:30:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:52,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:30:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-14 17:30:53,275 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:30:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 88 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:30:54,095 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:30:54,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:30:54,095 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:54,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:54,096 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:54,096 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:30:54,097 INFO L87 Difference]: Start difference. First operand 292576 states and 398851 transitions. Second operand 5 states. Received shutdown request... [2018-09-14 17:31:10,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:31:10,520 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:31:10,525 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:31:10,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:31:10 BoogieIcfgContainer [2018-09-14 17:31:10,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:31:10,527 INFO L168 Benchmark]: Toolchain (without parser) took 223600.69 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:31:10,528 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. [2018-09-14 17:31:10,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2121.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:10,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 259.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:10,530 INFO L168 Benchmark]: Boogie Preprocessor took 911.12 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 939.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:10,531 INFO L168 Benchmark]: RCFGBuilder took 12100.17 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 648.3 MB). Peak memory consumption was 648.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:31:10,532 INFO L168 Benchmark]: TraceAbstraction took 208201.13 ms. Allocated memory was 2.5 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:31:10,539 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 2121.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 259.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 911.12 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 939.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12100.17 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 648.3 MB). Peak memory consumption was 648.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208201.13 ms. Allocated memory was 2.5 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (292576states) and FLOYD_HOARE automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (560488 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 174.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4494 SDtfs, 34672 SDslu, 2226 SDs, 0 SdLazy, 73672 SolverSat, 14513 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 115.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3663 GetRequests, 3545 SyntacticMatches, 19 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=292576occurred in iteration=11, 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: 23.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 13987 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 4046 NumberOfCodeBlocks, 4046 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 5789 ConstructedInterpolants, 47 QuantifiedInterpolants, 4691221 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3152 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 2565/2951 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-31-10-564.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-31-10-564.csv Completed graceful shutdown