java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:01:49,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:01:49,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:01:49,413 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:01:49,414 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:01:49,415 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:01:49,416 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:01:49,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:01:49,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:01:49,424 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:01:49,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:01:49,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:01:49,428 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:01:49,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:01:49,433 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:01:49,434 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:01:49,435 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:01:49,441 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:01:49,449 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:01:49,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:01:49,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:01:49,457 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:01:49,459 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 11:01:49,473 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:01:49,473 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:01:49,476 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:01:49,477 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:01:49,478 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 [2018-07-24 11:01:49,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:01:49,507 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:01:49,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:01:49,509 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:01:49,509 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:01:49,509 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:01:49,509 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:01:49,510 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:01:49,510 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:01:49,510 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:01:49,511 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:01:49,512 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:01:49,512 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:01:49,512 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:01:49,512 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:01:49,513 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:01:49,513 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:01:49,513 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:01:49,513 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:01:49,515 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:01:49,515 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:01:49,515 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:01:49,515 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:01:49,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:01:49,516 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:01:49,516 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:01:49,516 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:01:49,516 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:01:49,517 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:01:49,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:01:49,517 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:01:49,517 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:01:49,517 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:01:49,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:01:49,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:01:49,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:01:49,613 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:01:49,613 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:01:49,614 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label35_false-unreach-call.c [2018-07-24 11:01:49,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7cdacaf/40c9a1ecaae24c729548cdbedaa7c413/FLAGbf251cdf4 [2018-07-24 11:01:50,354 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:01:50,355 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label35_false-unreach-call.c [2018-07-24 11:01:50,383 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7cdacaf/40c9a1ecaae24c729548cdbedaa7c413/FLAGbf251cdf4 [2018-07-24 11:01:50,406 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7cdacaf/40c9a1ecaae24c729548cdbedaa7c413 [2018-07-24 11:01:50,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:01:50,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:01:50,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:50,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:01:50,432 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:01:50,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:50" (1/1) ... [2018-07-24 11:01:50,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a54d43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:50, skipping insertion in model container [2018-07-24 11:01:50,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:50" (1/1) ... [2018-07-24 11:01:50,681 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:01:51,191 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:51,209 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:01:51,740 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:51,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51 WrapperNode [2018-07-24 11:01:51,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:51,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:51,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:01:51,813 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:01:51,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:51,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:51,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:51,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:01:51,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:01:51,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:01:52,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (1/1) ... [2018-07-24 11:01:52,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:01:52,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:01:52,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:01:52,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:01:52,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (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 [2018-07-24 11:01:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:01:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:01:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:01:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:01:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:01:52,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:01:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:01:52,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:01:58,912 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:01:58,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:58 BoogieIcfgContainer [2018-07-24 11:01:58,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:01:58,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:01:58,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:01:58,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:01:58,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:01:50" (1/3) ... [2018-07-24 11:01:58,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5423907c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:58, skipping insertion in model container [2018-07-24 11:01:58,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:51" (2/3) ... [2018-07-24 11:01:58,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5423907c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:58, skipping insertion in model container [2018-07-24 11:01:58,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:58" (3/3) ... [2018-07-24 11:01:58,927 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label35_false-unreach-call.c [2018-07-24 11:01:58,936 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:01:58,946 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:01:59,009 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:01:59,010 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:01:59,010 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:01:59,010 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:01:59,010 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:01:59,010 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:01:59,011 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:01:59,011 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:01:59,011 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:01:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 11:01:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-24 11:01:59,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:59,079 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:01:59,080 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:01:59,086 INFO L82 PathProgramCache]: Analyzing trace with hash 51871593, now seen corresponding path program 1 times [2018-07-24 11:01:59,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:59,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:59,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:59,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:59,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:00,070 WARN L169 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:02:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:00,258 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:00,258 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:02:00,259 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:00,266 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:00,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:00,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:00,287 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-07-24 11:02:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:02,663 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-07-24 11:02:02,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:02,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2018-07-24 11:02:02,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:02,693 INFO L225 Difference]: With dead ends: 845 [2018-07-24 11:02:02,693 INFO L226 Difference]: Without dead ends: 531 [2018-07-24 11:02:02,702 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:02,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-07-24 11:02:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-07-24 11:02:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-07-24 11:02:02,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-07-24 11:02:02,794 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 152 [2018-07-24 11:02:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:02,795 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-07-24 11:02:02,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-07-24 11:02:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-24 11:02:02,804 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:02,804 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:02:02,805 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:02,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1118360368, now seen corresponding path program 1 times [2018-07-24 11:02:02,805 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:02,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:02,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:02,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:02,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:03,222 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:03,223 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:02:03,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:03,225 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:02:03,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:02:03,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:02:03,226 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-07-24 11:02:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:07,896 INFO L93 Difference]: Finished difference Result 1635 states and 2803 transitions. [2018-07-24 11:02:07,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:02:07,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-07-24 11:02:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:07,909 INFO L225 Difference]: With dead ends: 1635 [2018-07-24 11:02:07,909 INFO L226 Difference]: Without dead ends: 1111 [2018-07-24 11:02:07,917 INFO L573 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 [2018-07-24 11:02:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2018-07-24 11:02:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1064. [2018-07-24 11:02:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-07-24 11:02:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1673 transitions. [2018-07-24 11:02:07,997 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1673 transitions. Word has length 162 [2018-07-24 11:02:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:07,997 INFO L471 AbstractCegarLoop]: Abstraction has 1064 states and 1673 transitions. [2018-07-24 11:02:07,997 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1673 transitions. [2018-07-24 11:02:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-07-24 11:02:08,005 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:08,005 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:02:08,005 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1947052283, now seen corresponding path program 1 times [2018-07-24 11:02:08,006 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:08,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:08,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:08,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:08,007 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:08,379 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:08,379 INFO L191 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 [2018-07-24 11:02:08,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:08,392 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:08,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:08,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:08,780 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:09,337 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:02:09,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 11:02:09,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:09,339 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:09,339 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:09,340 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:02:09,340 INFO L87 Difference]: Start difference. First operand 1064 states and 1673 transitions. Second operand 3 states. [2018-07-24 11:02:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:12,959 INFO L93 Difference]: Finished difference Result 3040 states and 4917 transitions. [2018-07-24 11:02:12,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:12,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2018-07-24 11:02:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:12,989 INFO L225 Difference]: With dead ends: 3040 [2018-07-24 11:02:12,990 INFO L226 Difference]: Without dead ends: 1982 [2018-07-24 11:02:12,996 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:02:12,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-07-24 11:02:13,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1979. [2018-07-24 11:02:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2018-07-24 11:02:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 2853 transitions. [2018-07-24 11:02:13,081 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 2853 transitions. Word has length 165 [2018-07-24 11:02:13,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:13,082 INFO L471 AbstractCegarLoop]: Abstraction has 1979 states and 2853 transitions. [2018-07-24 11:02:13,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 2853 transitions. [2018-07-24 11:02:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-07-24 11:02:13,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:13,089 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:02:13,090 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1735427731, now seen corresponding path program 1 times [2018-07-24 11:02:13,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:13,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:13,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:13,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:13,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:13,613 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:13,613 INFO L191 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 [2018-07-24 11:02:13,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:13,631 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:13,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:14,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:14,213 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:02:14,213 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 11:02:14,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:14,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:14,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:14,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:14,215 INFO L87 Difference]: Start difference. First operand 1979 states and 2853 transitions. Second operand 3 states. [2018-07-24 11:02:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:15,855 INFO L93 Difference]: Finished difference Result 4797 states and 7218 transitions. [2018-07-24 11:02:15,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:15,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-07-24 11:02:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:15,874 INFO L225 Difference]: With dead ends: 4797 [2018-07-24 11:02:15,875 INFO L226 Difference]: Without dead ends: 2824 [2018-07-24 11:02:15,884 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:15,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2018-07-24 11:02:15,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2821. [2018-07-24 11:02:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2018-07-24 11:02:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4102 transitions. [2018-07-24 11:02:15,982 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4102 transitions. Word has length 190 [2018-07-24 11:02:15,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:15,983 INFO L471 AbstractCegarLoop]: Abstraction has 2821 states and 4102 transitions. [2018-07-24 11:02:15,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4102 transitions. [2018-07-24 11:02:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-24 11:02:15,993 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:15,994 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:15,994 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:15,994 INFO L82 PathProgramCache]: Analyzing trace with hash -172747935, now seen corresponding path program 1 times [2018-07-24 11:02:15,995 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:15,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:15,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:15,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:15,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:16,290 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:16,291 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:02:16,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:16,291 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:16,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:16,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:16,292 INFO L87 Difference]: Start difference. First operand 2821 states and 4102 transitions. Second operand 3 states. [2018-07-24 11:02:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:18,996 INFO L93 Difference]: Finished difference Result 8312 states and 12496 transitions. [2018-07-24 11:02:18,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:19,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-07-24 11:02:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:19,034 INFO L225 Difference]: With dead ends: 8312 [2018-07-24 11:02:19,034 INFO L226 Difference]: Without dead ends: 5497 [2018-07-24 11:02:19,050 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2018-07-24 11:02:19,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 5490. [2018-07-24 11:02:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5490 states. [2018-07-24 11:02:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5490 states to 5490 states and 7918 transitions. [2018-07-24 11:02:19,213 INFO L78 Accepts]: Start accepts. Automaton has 5490 states and 7918 transitions. Word has length 198 [2018-07-24 11:02:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:19,214 INFO L471 AbstractCegarLoop]: Abstraction has 5490 states and 7918 transitions. [2018-07-24 11:02:19,214 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5490 states and 7918 transitions. [2018-07-24 11:02:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-24 11:02:19,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:19,233 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:02:19,233 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1996790998, now seen corresponding path program 1 times [2018-07-24 11:02:19,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:19,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:19,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:19,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:19,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 71 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 11:02:19,713 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:19,713 INFO L191 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 [2018-07-24 11:02:19,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:19,721 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:19,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:20,069 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:20,536 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:20,536 INFO L191 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 [2018-07-24 11:02:20,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:20,562 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:21,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:21,278 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:21,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:21,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 11:02:21,983 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:21,984 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:02:21,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:02:21,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:02:21,985 INFO L87 Difference]: Start difference. First operand 5490 states and 7918 transitions. Second operand 9 states. [2018-07-24 11:02:26,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:26,643 INFO L93 Difference]: Finished difference Result 17137 states and 29238 transitions. [2018-07-24 11:02:26,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:02:26,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2018-07-24 11:02:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:26,746 INFO L225 Difference]: With dead ends: 17137 [2018-07-24 11:02:26,746 INFO L226 Difference]: Without dead ends: 11653 [2018-07-24 11:02:26,785 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 867 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2018-07-24 11:02:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11653 states. [2018-07-24 11:02:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11653 to 10450. [2018-07-24 11:02:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10450 states. [2018-07-24 11:02:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10450 states to 10450 states and 14835 transitions. [2018-07-24 11:02:27,223 INFO L78 Accepts]: Start accepts. Automaton has 10450 states and 14835 transitions. Word has length 218 [2018-07-24 11:02:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:27,223 INFO L471 AbstractCegarLoop]: Abstraction has 10450 states and 14835 transitions. [2018-07-24 11:02:27,223 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:02:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 10450 states and 14835 transitions. [2018-07-24 11:02:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-07-24 11:02:27,260 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:27,260 INFO L353 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, 2, 2, 2, 2, 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] [2018-07-24 11:02:27,261 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1587017251, now seen corresponding path program 1 times [2018-07-24 11:02:27,261 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:27,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:27,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:27,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:27,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:27,556 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:02:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 97 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:27,991 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:27,991 INFO L191 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 [2018-07-24 11:02:28,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:28,003 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:28,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-24 11:02:28,532 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 97 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:28,694 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:28,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:02:28,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:28,695 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:02:28,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:02:28,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:02:28,695 INFO L87 Difference]: Start difference. First operand 10450 states and 14835 transitions. Second operand 5 states. [2018-07-24 11:02:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:31,113 INFO L93 Difference]: Finished difference Result 21079 states and 30870 transitions. [2018-07-24 11:02:31,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:02:31,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2018-07-24 11:02:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:31,166 INFO L225 Difference]: With dead ends: 21079 [2018-07-24 11:02:31,166 INFO L226 Difference]: Without dead ends: 10635 [2018-07-24 11:02:31,197 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 504 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:02:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10635 states. [2018-07-24 11:02:31,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10635 to 10490. [2018-07-24 11:02:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10490 states. [2018-07-24 11:02:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 13865 transitions. [2018-07-24 11:02:31,502 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 13865 transitions. Word has length 255 [2018-07-24 11:02:31,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:31,503 INFO L471 AbstractCegarLoop]: Abstraction has 10490 states and 13865 transitions. [2018-07-24 11:02:31,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:02:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 13865 transitions. [2018-07-24 11:02:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-24 11:02:31,545 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:31,546 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:31,546 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1810648699, now seen corresponding path program 1 times [2018-07-24 11:02:31,546 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:31,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:31,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:31,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:31,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 165 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-24 11:02:32,126 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:32,126 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:32,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:32,143 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:32,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:33,150 WARN L169 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-07-24 11:02:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 11:02:33,384 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 134 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-24 11:02:33,714 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:33,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2018-07-24 11:02:33,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:33,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:02:33,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:02:33,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:02:33,716 INFO L87 Difference]: Start difference. First operand 10490 states and 13865 transitions. Second operand 6 states. [2018-07-24 11:02:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:36,683 INFO L93 Difference]: Finished difference Result 22369 states and 30726 transitions. [2018-07-24 11:02:36,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:02:36,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 297 [2018-07-24 11:02:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:36,743 INFO L225 Difference]: With dead ends: 22369 [2018-07-24 11:02:36,743 INFO L226 Difference]: Without dead ends: 11208 [2018-07-24 11:02:36,776 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 586 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:02:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2018-07-24 11:02:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 10939. [2018-07-24 11:02:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10939 states. [2018-07-24 11:02:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10939 states to 10939 states and 14275 transitions. [2018-07-24 11:02:37,079 INFO L78 Accepts]: Start accepts. Automaton has 10939 states and 14275 transitions. Word has length 297 [2018-07-24 11:02:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:37,079 INFO L471 AbstractCegarLoop]: Abstraction has 10939 states and 14275 transitions. [2018-07-24 11:02:37,080 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 10939 states and 14275 transitions. [2018-07-24 11:02:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-24 11:02:37,120 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:37,121 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2018-07-24 11:02:37,121 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:37,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1268210296, now seen corresponding path program 1 times [2018-07-24 11:02:37,122 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:37,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:37,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:37,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:37,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 138 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-24 11:02:37,635 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:37,636 INFO L191 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 [2018-07-24 11:02:37,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:37,643 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:37,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 11:02:38,450 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 138 proven. 57 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-24 11:02:39,585 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:39,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:02:39,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:39,586 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:02:39,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:02:39,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:02:39,589 INFO L87 Difference]: Start difference. First operand 10939 states and 14275 transitions. Second operand 5 states. [2018-07-24 11:02:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:42,467 INFO L93 Difference]: Finished difference Result 30940 states and 41426 transitions. [2018-07-24 11:02:42,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:02:42,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2018-07-24 11:02:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:42,538 INFO L225 Difference]: With dead ends: 30940 [2018-07-24 11:02:42,539 INFO L226 Difference]: Without dead ends: 20007 [2018-07-24 11:02:42,572 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:02:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20007 states. [2018-07-24 11:02:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20007 to 18990. [2018-07-24 11:02:43,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18990 states. [2018-07-24 11:02:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18990 states to 18990 states and 24676 transitions. [2018-07-24 11:02:43,199 INFO L78 Accepts]: Start accepts. Automaton has 18990 states and 24676 transitions. Word has length 299 [2018-07-24 11:02:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:43,199 INFO L471 AbstractCegarLoop]: Abstraction has 18990 states and 24676 transitions. [2018-07-24 11:02:43,199 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:02:43,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18990 states and 24676 transitions. [2018-07-24 11:02:43,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-24 11:02:43,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:43,255 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:43,255 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:43,255 INFO L82 PathProgramCache]: Analyzing trace with hash -996918759, now seen corresponding path program 1 times [2018-07-24 11:02:43,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:43,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:43,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:43,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:43,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:43,912 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:43,912 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:43,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:43,930 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:44,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 11:02:44,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 142 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:44,854 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:02:44,854 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:02:44,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:44,855 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:02:44,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:02:44,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:02:44,855 INFO L87 Difference]: Start difference. First operand 18990 states and 24676 transitions. Second operand 5 states. [2018-07-24 11:02:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:47,133 INFO L93 Difference]: Finished difference Result 38341 states and 51322 transitions. [2018-07-24 11:02:47,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:02:47,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2018-07-24 11:02:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:47,199 INFO L225 Difference]: With dead ends: 38341 [2018-07-24 11:02:47,200 INFO L226 Difference]: Without dead ends: 19565 [2018-07-24 11:02:47,240 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:02:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19565 states. [2018-07-24 11:02:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19565 to 19085. [2018-07-24 11:02:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19085 states. [2018-07-24 11:02:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 24087 transitions. [2018-07-24 11:02:47,632 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 24087 transitions. Word has length 300 [2018-07-24 11:02:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:47,632 INFO L471 AbstractCegarLoop]: Abstraction has 19085 states and 24087 transitions. [2018-07-24 11:02:47,632 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:02:47,633 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 24087 transitions. [2018-07-24 11:02:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-24 11:02:47,665 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:47,666 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:47,666 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:47,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2145420102, now seen corresponding path program 1 times [2018-07-24 11:02:47,666 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:47,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:47,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:47,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:47,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:48,363 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:48,363 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:48,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:48,384 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:48,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:49,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:49,364 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:49,364 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:49,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:49,386 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:50,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:50,443 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-07-24 11:02:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 152 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:50,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:51,043 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:51,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 5] total 9 [2018-07-24 11:02:51,043 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:51,044 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:02:51,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:02:51,045 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:02:51,045 INFO L87 Difference]: Start difference. First operand 19085 states and 24087 transitions. Second operand 6 states. [2018-07-24 11:02:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:54,749 INFO L93 Difference]: Finished difference Result 46073 states and 61128 transitions. [2018-07-24 11:02:54,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:02:54,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 309 [2018-07-24 11:02:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:54,859 INFO L225 Difference]: With dead ends: 46073 [2018-07-24 11:02:54,860 INFO L226 Difference]: Without dead ends: 27202 [2018-07-24 11:02:54,909 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1234 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:02:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27202 states. [2018-07-24 11:02:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27202 to 26517. [2018-07-24 11:02:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26517 states. [2018-07-24 11:02:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26517 states to 26517 states and 32640 transitions. [2018-07-24 11:02:55,547 INFO L78 Accepts]: Start accepts. Automaton has 26517 states and 32640 transitions. Word has length 309 [2018-07-24 11:02:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:55,547 INFO L471 AbstractCegarLoop]: Abstraction has 26517 states and 32640 transitions. [2018-07-24 11:02:55,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26517 states and 32640 transitions. [2018-07-24 11:02:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-24 11:02:55,591 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:55,591 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:55,592 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:02:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1599183218, now seen corresponding path program 1 times [2018-07-24 11:02:55,592 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:55,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:55,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:55,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:55,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 232 proven. 58 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 11:02:56,222 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:56,222 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:56,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:56,230 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:56,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 11:02:56,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 217 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:57,256 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:57,257 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:57,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:57,272 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:58,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 11:02:58,134 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:58,578 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 11:02:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 217 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:02:58,826 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:58,826 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8, 8, 8] total 16 [2018-07-24 11:02:58,827 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:58,827 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 11:02:58,827 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 11:02:58,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:02:58,828 INFO L87 Difference]: Start difference. First operand 26517 states and 32640 transitions. Second operand 12 states. [2018-07-24 11:03:03,810 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 11:03:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:17,646 INFO L93 Difference]: Finished difference Result 91248 states and 125908 transitions. [2018-07-24 11:03:17,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-07-24 11:03:17,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 368 [2018-07-24 11:03:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:17,905 INFO L225 Difference]: With dead ends: 91248 [2018-07-24 11:03:17,905 INFO L226 Difference]: Without dead ends: 66296 [2018-07-24 11:03:17,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1633 GetRequests, 1540 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3278 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1399, Invalid=7531, Unknown=0, NotChecked=0, Total=8930 [2018-07-24 11:03:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66296 states. [2018-07-24 11:03:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66296 to 62901. [2018-07-24 11:03:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62901 states. [2018-07-24 11:03:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62901 states to 62901 states and 74679 transitions. [2018-07-24 11:03:19,410 INFO L78 Accepts]: Start accepts. Automaton has 62901 states and 74679 transitions. Word has length 368 [2018-07-24 11:03:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:19,410 INFO L471 AbstractCegarLoop]: Abstraction has 62901 states and 74679 transitions. [2018-07-24 11:03:19,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 11:03:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 62901 states and 74679 transitions. [2018-07-24 11:03:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-24 11:03:19,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:19,463 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:03:19,463 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:19,463 INFO L82 PathProgramCache]: Analyzing trace with hash -998459830, now seen corresponding path program 1 times [2018-07-24 11:03:19,464 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:19,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:19,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:19,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:19,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 228 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:03:20,036 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:20,037 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:20,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:20,044 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:20,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 11:03:20,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 230 proven. 95 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-24 11:03:20,911 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:20,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2018-07-24 11:03:20,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:20,912 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:03:20,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:03:20,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:03:20,913 INFO L87 Difference]: Start difference. First operand 62901 states and 74679 transitions. Second operand 5 states. [2018-07-24 11:03:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:23,062 INFO L93 Difference]: Finished difference Result 167867 states and 204388 transitions. [2018-07-24 11:03:23,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:03:23,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 385 [2018-07-24 11:03:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:23,426 INFO L225 Difference]: With dead ends: 167867 [2018-07-24 11:03:23,427 INFO L226 Difference]: Without dead ends: 108335 [2018-07-24 11:03:23,528 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 780 GetRequests, 763 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:03:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108335 states. [2018-07-24 11:03:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108335 to 107229. [2018-07-24 11:03:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107229 states. [2018-07-24 11:03:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107229 states to 107229 states and 127628 transitions. [2018-07-24 11:03:25,950 INFO L78 Accepts]: Start accepts. Automaton has 107229 states and 127628 transitions. Word has length 385 [2018-07-24 11:03:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:25,950 INFO L471 AbstractCegarLoop]: Abstraction has 107229 states and 127628 transitions. [2018-07-24 11:03:25,950 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:03:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 107229 states and 127628 transitions. [2018-07-24 11:03:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-07-24 11:03:26,027 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:26,027 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:03:26,028 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:26,028 INFO L82 PathProgramCache]: Analyzing trace with hash -227000356, now seen corresponding path program 1 times [2018-07-24 11:03:26,028 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:26,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:26,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:26,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:26,029 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:26,712 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 11:03:26,918 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 11:03:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 249 proven. 75 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 11:03:27,208 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:27,208 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:27,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:27,217 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:27,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 11:03:27,693 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 249 proven. 75 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 11:03:28,528 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:28,529 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:03:28,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:28,544 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:29,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 300 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:03:29,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 11:03:29,900 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:03:29,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 5] total 19 [2018-07-24 11:03:29,901 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:03:29,902 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 11:03:29,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 11:03:29,903 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:03:29,903 INFO L87 Difference]: Start difference. First operand 107229 states and 127628 transitions. Second operand 11 states. [2018-07-24 11:03:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:34,977 INFO L93 Difference]: Finished difference Result 201550 states and 249440 transitions. [2018-07-24 11:03:34,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:03:34,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 387 [2018-07-24 11:03:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:35,359 INFO L225 Difference]: With dead ends: 201550 [2018-07-24 11:03:35,359 INFO L226 Difference]: Without dead ends: 103725 [2018-07-24 11:03:35,523 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1567 GetRequests, 1542 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2018-07-24 11:03:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103725 states. [2018-07-24 11:03:37,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103725 to 101094. [2018-07-24 11:03:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101094 states. [2018-07-24 11:03:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101094 states to 101094 states and 116104 transitions. [2018-07-24 11:03:38,163 INFO L78 Accepts]: Start accepts. Automaton has 101094 states and 116104 transitions. Word has length 387 [2018-07-24 11:03:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:38,164 INFO L471 AbstractCegarLoop]: Abstraction has 101094 states and 116104 transitions. [2018-07-24 11:03:38,164 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 11:03:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 101094 states and 116104 transitions. [2018-07-24 11:03:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-07-24 11:03:38,231 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:38,232 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:03:38,232 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:38,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1022418351, now seen corresponding path program 1 times [2018-07-24 11:03:38,232 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:38,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:38,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:38,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:38,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 4 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-07-24 11:03:38,614 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:38,614 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:38,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:38,638 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:39,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-07-24 11:03:39,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 4 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-07-24 11:03:39,462 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:39,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2018-07-24 11:03:39,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:39,464 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:03:39,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:03:39,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:03:39,464 INFO L87 Difference]: Start difference. First operand 101094 states and 116104 transitions. Second operand 3 states. [2018-07-24 11:03:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:41,195 INFO L93 Difference]: Finished difference Result 191074 states and 219437 transitions. [2018-07-24 11:03:41,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:03:41,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2018-07-24 11:03:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:41,440 INFO L225 Difference]: With dead ends: 191074 [2018-07-24 11:03:41,441 INFO L226 Difference]: Without dead ends: 101073 [2018-07-24 11:03:41,548 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:03:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101073 states. [2018-07-24 11:03:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101073 to 101073. [2018-07-24 11:03:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101073 states. [2018-07-24 11:03:43,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101073 states to 101073 states and 116060 transitions. [2018-07-24 11:03:43,920 INFO L78 Accepts]: Start accepts. Automaton has 101073 states and 116060 transitions. Word has length 388 [2018-07-24 11:03:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:43,921 INFO L471 AbstractCegarLoop]: Abstraction has 101073 states and 116060 transitions. [2018-07-24 11:03:43,921 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:03:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 101073 states and 116060 transitions. [2018-07-24 11:03:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-07-24 11:03:43,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:43,986 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:03:43,986 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:43,986 INFO L82 PathProgramCache]: Analyzing trace with hash -36669541, now seen corresponding path program 1 times [2018-07-24 11:03:43,986 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:43,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:43,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:43,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:43,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 288 proven. 59 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:03:44,515 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:44,515 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:44,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:44,524 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:44,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 369 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 11:03:45,005 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 373 proven. 6 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 11:03:45,252 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:45,252 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:03:45,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:45,268 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:46,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 369 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 11:03:46,592 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 373 proven. 6 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 11:03:47,433 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:03:47,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 11:03:47,434 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:03:47,435 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:03:47,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:03:47,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:03:47,436 INFO L87 Difference]: Start difference. First operand 101073 states and 116060 transitions. Second operand 9 states. [2018-07-24 11:03:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:58,825 INFO L93 Difference]: Finished difference Result 280626 states and 337567 transitions. [2018-07-24 11:03:58,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-24 11:03:58,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 395 [2018-07-24 11:03:58,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:59,352 INFO L225 Difference]: With dead ends: 280626 [2018-07-24 11:03:59,352 INFO L226 Difference]: Without dead ends: 184180 [2018-07-24 11:03:59,493 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1642 GetRequests, 1595 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2018-07-24 11:03:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184180 states. [2018-07-24 11:04:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184180 to 174805. [2018-07-24 11:04:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174805 states. [2018-07-24 11:04:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174805 states to 174805 states and 196769 transitions. [2018-07-24 11:04:03,395 INFO L78 Accepts]: Start accepts. Automaton has 174805 states and 196769 transitions. Word has length 395 [2018-07-24 11:04:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:04:03,396 INFO L471 AbstractCegarLoop]: Abstraction has 174805 states and 196769 transitions. [2018-07-24 11:04:03,396 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:04:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 174805 states and 196769 transitions. [2018-07-24 11:04:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-24 11:04:03,501 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:04:03,501 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:04:03,501 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:04:03,502 INFO L82 PathProgramCache]: Analyzing trace with hash 124029915, now seen corresponding path program 1 times [2018-07-24 11:04:03,502 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:04:03,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:03,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:03,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:03,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:04:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 244 proven. 123 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:04:04,072 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:04,072 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:04:04,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:04,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:04,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 11:04:04,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 263 proven. 89 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 11:04:05,125 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:05,125 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:04:05,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:05,140 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:05,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 218 proven. 21 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 11:04:06,161 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 248 proven. 119 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:04:07,253 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:04:07,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 8, 8] total 25 [2018-07-24 11:04:07,254 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:04:07,255 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 11:04:07,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 11:04:07,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-07-24 11:04:07,256 INFO L87 Difference]: Start difference. First operand 174805 states and 196769 transitions. Second operand 14 states. [2018-07-24 11:04:19,108 WARN L169 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 11:04:23,546 WARN L169 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 11:04:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:04:57,383 INFO L93 Difference]: Finished difference Result 650894 states and 857882 transitions. [2018-07-24 11:04:57,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-07-24 11:04:57,384 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 399 [2018-07-24 11:04:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:04:59,994 INFO L225 Difference]: With dead ends: 650894 [2018-07-24 11:04:59,995 INFO L226 Difference]: Without dead ends: 436985 [2018-07-24 11:05:01,025 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1856 GetRequests, 1704 SyntacticMatches, 3 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8717 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3332, Invalid=19318, Unknown=0, NotChecked=0, Total=22650 [2018-07-24 11:05:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436985 states. [2018-07-24 11:05:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436985 to 391663. [2018-07-24 11:05:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391663 states. [2018-07-24 11:05:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391663 states to 391663 states and 432134 transitions. [2018-07-24 11:05:10,997 INFO L78 Accepts]: Start accepts. Automaton has 391663 states and 432134 transitions. Word has length 399 [2018-07-24 11:05:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:05:10,998 INFO L471 AbstractCegarLoop]: Abstraction has 391663 states and 432134 transitions. [2018-07-24 11:05:10,998 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 11:05:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 391663 states and 432134 transitions. [2018-07-24 11:05:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-07-24 11:05:11,122 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:05:11,123 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:05:11,123 INFO L414 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:05:11,123 INFO L82 PathProgramCache]: Analyzing trace with hash 625424960, now seen corresponding path program 1 times [2018-07-24 11:05:11,123 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:05:11,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:11,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:11,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:11,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:05:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:11,878 WARN L169 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-07-24 11:05:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 362 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:05:14,635 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:05:14,635 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:05:14,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:14,643 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:05:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:14,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:05:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 11:05:15,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:05:15,667 WARN L169 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-24 11:05:15,894 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2018-07-24 11:05:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 245 proven. 109 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-07-24 11:05:16,436 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:05:16,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 5] total 20 [2018-07-24 11:05:16,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:05:16,437 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:05:16,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:05:16,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2018-07-24 11:05:16,437 INFO L87 Difference]: Start difference. First operand 391663 states and 432134 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 11:05:26,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:05:26,280 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:05:26,288 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:05:26,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:05:26 BoogieIcfgContainer [2018-07-24 11:05:26,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:05:26,289 INFO L168 Benchmark]: Toolchain (without parser) took 215870.73 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-07-24 11:05:26,290 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:05:26,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1389.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:26,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:26,292 INFO L168 Benchmark]: Boogie Preprocessor took 428.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -898.4 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:26,293 INFO L168 Benchmark]: RCFGBuilder took 6489.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.9 MB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:26,294 INFO L168 Benchmark]: TraceAbstraction took 207373.96 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -674.6 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-07-24 11:05:26,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1389.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 428.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -898.4 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6489.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.9 MB). Peak memory consumption was 288.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207373.96 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -674.6 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1470]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1470). Cancelled while BasicCegarLoop was constructing difference of abstraction (391663states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (849509 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 18 OverallIterations, 5 TraceHistogramMax, 139.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4194 SDtfs, 27350 SDslu, 5613 SDs, 0 SdLazy, 48219 SolverSat, 9996 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14301 GetRequests, 13825 SyntacticMatches, 34 SemanticMatches, 442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12848 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=391663occurred in iteration=17, 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: 25.9s AutomataMinimizationTime, 17 MinimizatonAttempts, 65689 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 26.1s InterpolantComputationTime, 12110 NumberOfCodeBlocks, 12110 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 18887 ConstructedInterpolants, 0 QuantifiedInterpolants, 23558284 SizeOfPredicates, 79 NumberOfNonLiveVariables, 26702 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 60 InterpolantComputations, 14 PerfectInterpolantSequences, 13026/14594 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/Problem03_label35_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-05-26-313.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label35_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-05-26-313.csv Completed graceful shutdown