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/Problem15_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:07:56,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:07:56,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:07:56,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:07:56,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:07:56,382 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:07:56,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:07:56,385 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:07:56,386 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:07:56,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:07:56,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:07:56,389 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:07:56,389 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:07:56,390 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:07:56,392 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:07:56,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:07:56,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:07:56,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:07:56,402 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:07:56,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:07:56,405 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:07:56,408 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:07:56,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:07:56,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:07:56,414 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:07:56,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:07:56,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:07:56,423 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:07:56,424 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:07:56,427 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:07:56,427 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:07:56,428 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:07:56,428 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:07:56,428 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:07:56,430 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:07:56,431 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:07:56,431 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 12:07:56,447 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:07:56,447 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:07:56,448 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:07:56,448 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:07:56,448 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:07:56,448 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:07:56,449 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:07:56,449 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:07:56,449 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:07:56,449 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:07:56,449 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:07:56,450 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:07:56,450 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:07:56,450 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:07:56,451 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:07:56,451 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:07:56,451 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:07:56,451 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:07:56,451 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:07:56,452 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:07:56,452 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:07:56,452 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:07:56,452 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:07:56,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:07:56,453 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:07:56,453 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:07:56,453 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:07:56,453 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:07:56,453 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:07:56,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:07:56,454 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:07:56,454 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:07:56,454 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:07:56,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:07:56,533 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:07:56,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:07:56,540 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:07:56,541 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:07:56,541 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label09_false-unreach-call.c [2018-07-24 12:07:56,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ad08f5b/5b65e776cab34b36a1de7fa7690b91ae/FLAG60b73d9df [2018-07-24 12:07:57,303 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:07:57,304 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label09_false-unreach-call.c [2018-07-24 12:07:57,330 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ad08f5b/5b65e776cab34b36a1de7fa7690b91ae/FLAG60b73d9df [2018-07-24 12:07:57,350 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4ad08f5b/5b65e776cab34b36a1de7fa7690b91ae [2018-07-24 12:07:57,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:07:57,365 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:07:57,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:07:57,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:07:57,376 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:07:57,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:07:57" (1/1) ... [2018-07-24 12:07:57,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e2922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:57, skipping insertion in model container [2018-07-24 12:07:57,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:07:57" (1/1) ... [2018-07-24 12:07:57,627 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:07:58,212 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:07:58,233 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:07:58,575 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:07:58,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58 WrapperNode [2018-07-24 12:07:58,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:07:58,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:07:58,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:07:58,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:07:58,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:58,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:58,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:07:58,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:07:58,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:07:58,980 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:07:59,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (1/1) ... [2018-07-24 12:07:59,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:07:59,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:07:59,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:07:59,693 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:07:59,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (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 12:07:59,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:07:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:07:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:07:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:07:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:07:59,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:07:59,769 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_output2 [2018-07-24 12:07:59,769 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_output2 [2018-07-24 12:07:59,769 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 12:07:59,769 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 12:08:06,726 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:08:06,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:08:06 BoogieIcfgContainer [2018-07-24 12:08:06,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:08:06,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:08:06,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:08:06,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:08:06,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:07:57" (1/3) ... [2018-07-24 12:08:06,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a5b7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:08:06, skipping insertion in model container [2018-07-24 12:08:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:07:58" (2/3) ... [2018-07-24 12:08:06,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a5b7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:08:06, skipping insertion in model container [2018-07-24 12:08:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:08:06" (3/3) ... [2018-07-24 12:08:06,736 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label09_false-unreach-call.c [2018-07-24 12:08:06,744 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:08:06,752 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:08:06,808 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:08:06,809 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:08:06,810 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:08:06,810 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:08:06,810 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:08:06,810 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:08:06,810 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:08:06,810 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:08:06,811 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:08:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:08:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-24 12:08:06,847 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:06,848 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:08:06,849 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 12:08:06,854 INFO L82 PathProgramCache]: Analyzing trace with hash 575528516, now seen corresponding path program 1 times [2018-07-24 12:08:06,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:06,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:06,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:06,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:06,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:07,273 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-24 12:08:07,278 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 12:08:07,280 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:07,281 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:08:07,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:07,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:08:07,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:08:07,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:08:07,306 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-07-24 12:08:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:17,017 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-07-24 12:08:17,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:08:17,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-24 12:08:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:17,071 INFO L225 Difference]: With dead ends: 1514 [2018-07-24 12:08:17,071 INFO L226 Difference]: Without dead ends: 1070 [2018-07-24 12:08:17,082 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:08:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-07-24 12:08:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-07-24 12:08:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-07-24 12:08:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-07-24 12:08:17,212 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 14 [2018-07-24 12:08:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:17,212 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-07-24 12:08:17,213 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:08:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-07-24 12:08:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-07-24 12:08:17,217 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:17,217 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] [2018-07-24 12:08:17,217 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 12:08:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1651891727, now seen corresponding path program 1 times [2018-07-24 12:08:17,218 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:17,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:17,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:17,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:17,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:17,503 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 12:08:17,503 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:17,503 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:17,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:17,506 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:17,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:17,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:17,507 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 3 states. [2018-07-24 12:08:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:24,204 INFO L93 Difference]: Finished difference Result 3059 states and 4890 transitions. [2018-07-24 12:08:24,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:24,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2018-07-24 12:08:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:24,219 INFO L225 Difference]: With dead ends: 3059 [2018-07-24 12:08:24,219 INFO L226 Difference]: Without dead ends: 1997 [2018-07-24 12:08:24,226 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 12:08:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-07-24 12:08:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2018-07-24 12:08:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2018-07-24 12:08:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2748 transitions. [2018-07-24 12:08:24,286 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2748 transitions. Word has length 84 [2018-07-24 12:08:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:24,287 INFO L471 AbstractCegarLoop]: Abstraction has 1995 states and 2748 transitions. [2018-07-24 12:08:24,287 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2748 transitions. [2018-07-24 12:08:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-24 12:08:24,295 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:24,297 INFO L353 BasicCegarLoop]: trace histogram [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, 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 12:08:24,298 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 12:08:24,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1049494411, now seen corresponding path program 1 times [2018-07-24 12:08:24,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:24,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:24,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:24,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:08:24,650 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:08:24,650 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 12:08:24,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:24,661 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:08:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:24,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:08:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:08:25,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:08:25,194 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:08:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 12:08:26,413 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:08:26,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 12:08:26,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:26,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:08:26,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:08:26,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:08:26,415 INFO L87 Difference]: Start difference. First operand 1995 states and 2748 transitions. Second operand 5 states. [2018-07-24 12:08:34,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:34,588 INFO L93 Difference]: Finished difference Result 5881 states and 8198 transitions. [2018-07-24 12:08:34,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:08:34,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2018-07-24 12:08:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:34,620 INFO L225 Difference]: With dead ends: 5881 [2018-07-24 12:08:34,620 INFO L226 Difference]: Without dead ends: 3892 [2018-07-24 12:08:34,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 386 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:08:34,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2018-07-24 12:08:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3892. [2018-07-24 12:08:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3892 states. [2018-07-24 12:08:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 5034 transitions. [2018-07-24 12:08:34,767 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 5034 transitions. Word has length 194 [2018-07-24 12:08:34,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:34,768 INFO L471 AbstractCegarLoop]: Abstraction has 3892 states and 5034 transitions. [2018-07-24 12:08:34,768 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:08:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 5034 transitions. [2018-07-24 12:08:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-24 12:08:34,779 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:34,780 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:34,780 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 12:08:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash -944955853, now seen corresponding path program 1 times [2018-07-24 12:08:34,784 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:34,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:34,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:34,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:34,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:08:35,128 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:35,128 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:35,128 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:35,129 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:35,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:35,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:35,132 INFO L87 Difference]: Start difference. First operand 3892 states and 5034 transitions. Second operand 3 states. [2018-07-24 12:08:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:40,058 INFO L93 Difference]: Finished difference Result 9337 states and 12591 transitions. [2018-07-24 12:08:40,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:40,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 296 [2018-07-24 12:08:40,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:40,088 INFO L225 Difference]: With dead ends: 9337 [2018-07-24 12:08:40,088 INFO L226 Difference]: Without dead ends: 5451 [2018-07-24 12:08:40,114 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 12:08:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2018-07-24 12:08:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 5451. [2018-07-24 12:08:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5451 states. [2018-07-24 12:08:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5451 states to 5451 states and 6785 transitions. [2018-07-24 12:08:40,242 INFO L78 Accepts]: Start accepts. Automaton has 5451 states and 6785 transitions. Word has length 296 [2018-07-24 12:08:40,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:40,243 INFO L471 AbstractCegarLoop]: Abstraction has 5451 states and 6785 transitions. [2018-07-24 12:08:40,243 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5451 states and 6785 transitions. [2018-07-24 12:08:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-24 12:08:40,248 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:40,248 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:40,249 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 12:08:40,249 INFO L82 PathProgramCache]: Analyzing trace with hash 989729833, now seen corresponding path program 1 times [2018-07-24 12:08:40,249 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:40,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:40,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:40,655 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:08:40,655 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 12:08:40,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:40,664 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:08:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:40,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:08:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:41,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:08:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:41,372 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:08:41,372 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:08:41,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:41,399 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:08:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:41,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:08:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:41,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:08:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:08:42,304 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:08:42,304 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:08:42,305 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:08:42,306 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:08:42,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:08:42,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:08:42,308 INFO L87 Difference]: Start difference. First operand 5451 states and 6785 transitions. Second operand 9 states. [2018-07-24 12:08:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:53,392 INFO L93 Difference]: Finished difference Result 16495 states and 23102 transitions. [2018-07-24 12:08:53,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 12:08:53,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 302 [2018-07-24 12:08:53,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:53,470 INFO L225 Difference]: With dead ends: 16495 [2018-07-24 12:08:53,470 INFO L226 Difference]: Without dead ends: 11050 [2018-07-24 12:08:53,530 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1230 GetRequests, 1208 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:08:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11050 states. [2018-07-24 12:08:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11050 to 10706. [2018-07-24 12:08:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10706 states. [2018-07-24 12:08:53,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 14364 transitions. [2018-07-24 12:08:53,848 INFO L78 Accepts]: Start accepts. Automaton has 10706 states and 14364 transitions. Word has length 302 [2018-07-24 12:08:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:53,849 INFO L471 AbstractCegarLoop]: Abstraction has 10706 states and 14364 transitions. [2018-07-24 12:08:53,849 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:08:53,849 INFO L276 IsEmpty]: Start isEmpty. Operand 10706 states and 14364 transitions. [2018-07-24 12:08:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-24 12:08:53,860 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:53,861 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:08:53,861 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 12:08:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1467458444, now seen corresponding path program 1 times [2018-07-24 12:08:53,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:53,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:53,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:53,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:53,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:08:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2018-07-24 12:08:54,161 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:08:54,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:08:54,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:08:54,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:08:54,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:08:54,162 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:08:54,163 INFO L87 Difference]: Start difference. First operand 10706 states and 14364 transitions. Second operand 3 states. [2018-07-24 12:08:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:08:59,470 INFO L93 Difference]: Finished difference Result 20321 states and 26781 transitions. [2018-07-24 12:08:59,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:08:59,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-07-24 12:08:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:08:59,526 INFO L225 Difference]: With dead ends: 20321 [2018-07-24 12:08:59,526 INFO L226 Difference]: Without dead ends: 9621 [2018-07-24 12:08:59,578 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 12:08:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9621 states. [2018-07-24 12:08:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9621 to 9594. [2018-07-24 12:08:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9594 states. [2018-07-24 12:08:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9594 states to 9594 states and 11249 transitions. [2018-07-24 12:08:59,779 INFO L78 Accepts]: Start accepts. Automaton has 9594 states and 11249 transitions. Word has length 426 [2018-07-24 12:08:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:08:59,780 INFO L471 AbstractCegarLoop]: Abstraction has 9594 states and 11249 transitions. [2018-07-24 12:08:59,780 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:08:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9594 states and 11249 transitions. [2018-07-24 12:08:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-07-24 12:08:59,793 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:08:59,794 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:08:59,794 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 12:08:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1765088503, now seen corresponding path program 1 times [2018-07-24 12:08:59,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:08:59,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:59,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:08:59,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:08:59,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:08:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:09:00,146 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:09:00,147 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:09:00,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:09:00,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:09:00,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:09:00,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:09:00,148 INFO L87 Difference]: Start difference. First operand 9594 states and 11249 transitions. Second operand 3 states. [2018-07-24 12:09:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:09:05,993 INFO L93 Difference]: Finished difference Result 19179 states and 22536 transitions. [2018-07-24 12:09:05,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:09:05,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 456 [2018-07-24 12:09:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:09:06,022 INFO L225 Difference]: With dead ends: 19179 [2018-07-24 12:09:06,023 INFO L226 Difference]: Without dead ends: 9591 [2018-07-24 12:09:06,041 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 12:09:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9591 states. [2018-07-24 12:09:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9591 to 9277. [2018-07-24 12:09:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9277 states. [2018-07-24 12:09:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 10570 transitions. [2018-07-24 12:09:06,206 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 10570 transitions. Word has length 456 [2018-07-24 12:09:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:06,207 INFO L471 AbstractCegarLoop]: Abstraction has 9277 states and 10570 transitions. [2018-07-24 12:09:06,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:09:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 10570 transitions. [2018-07-24 12:09:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-07-24 12:09:06,224 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:06,225 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:09:06,225 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 12:09:06,225 INFO L82 PathProgramCache]: Analyzing trace with hash -970233367, now seen corresponding path program 1 times [2018-07-24 12:09:06,225 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:06,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:06,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:06,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:06,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-07-24 12:09:06,667 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:09:06,667 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:09:06,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:09:06,668 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:09:06,668 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:09:06,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:09:06,669 INFO L87 Difference]: Start difference. First operand 9277 states and 10570 transitions. Second operand 3 states. [2018-07-24 12:09:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:09:10,770 INFO L93 Difference]: Finished difference Result 20099 states and 23172 transitions. [2018-07-24 12:09:10,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:09:10,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 466 [2018-07-24 12:09:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:09:10,798 INFO L225 Difference]: With dead ends: 20099 [2018-07-24 12:09:10,799 INFO L226 Difference]: Without dead ends: 10828 [2018-07-24 12:09:10,815 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 12:09:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10828 states. [2018-07-24 12:09:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10828 to 10782. [2018-07-24 12:09:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10782 states. [2018-07-24 12:09:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 12233 transitions. [2018-07-24 12:09:10,981 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 12233 transitions. Word has length 466 [2018-07-24 12:09:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:10,982 INFO L471 AbstractCegarLoop]: Abstraction has 10782 states and 12233 transitions. [2018-07-24 12:09:10,982 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:09:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 12233 transitions. [2018-07-24 12:09:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-07-24 12:09:11,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:11,002 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:09:11,002 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 12:09:11,003 INFO L82 PathProgramCache]: Analyzing trace with hash -238108865, now seen corresponding path program 1 times [2018-07-24 12:09:11,003 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:11,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:11,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:11,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:11,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:11,732 WARN L169 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 12:09:12,092 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 12:09:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 21 proven. 292 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-07-24 12:09:12,662 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:12,662 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:09:12,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:12,678 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:12,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 12:09:13,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:14,113 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-07-24 12:09:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 21 proven. 292 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-07-24 12:09:14,983 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:09:14,984 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:09:14,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:09:14,985 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:09:14,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:09:14,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:09:14,985 INFO L87 Difference]: Start difference. First operand 10782 states and 12233 transitions. Second operand 5 states. [2018-07-24 12:09:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:09:26,235 INFO L93 Difference]: Finished difference Result 24621 states and 27992 transitions. [2018-07-24 12:09:26,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:09:26,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 517 [2018-07-24 12:09:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:09:26,273 INFO L225 Difference]: With dead ends: 24621 [2018-07-24 12:09:26,274 INFO L226 Difference]: Without dead ends: 13845 [2018-07-24 12:09:26,294 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 1029 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:09:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13845 states. [2018-07-24 12:09:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13845 to 13331. [2018-07-24 12:09:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13331 states. [2018-07-24 12:09:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 15006 transitions. [2018-07-24 12:09:26,511 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 15006 transitions. Word has length 517 [2018-07-24 12:09:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:09:26,511 INFO L471 AbstractCegarLoop]: Abstraction has 13331 states and 15006 transitions. [2018-07-24 12:09:26,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:09:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 15006 transitions. [2018-07-24 12:09:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2018-07-24 12:09:26,536 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:09:26,537 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:09:26,537 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 12:09:26,537 INFO L82 PathProgramCache]: Analyzing trace with hash -873214602, now seen corresponding path program 1 times [2018-07-24 12:09:26,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:09:26,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:26,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:26,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:09:26,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:09:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:09:27,288 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:27,288 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 12:09:27,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:27,304 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:27,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:09:33,697 WARN L169 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 388 DAG size of output: 18 [2018-07-24 12:09:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:09:34,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:09:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:09:34,737 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:09:34,737 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:09:34,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:09:34,753 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:09:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:09:35,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:10:00,212 WARN L169 SmtUtils]: Spent 24.24 s on a formula simplification that was a NOOP. DAG size: 59 [2018-07-24 12:10:08,376 WARN L169 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2018-07-24 12:10:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 316 proven. 111 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 12:10:08,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:10:09,346 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-07-24 12:10:12,682 WARN L169 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2018-07-24 12:10:17,025 WARN L169 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 48 [2018-07-24 12:10:17,032 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:17,147 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-07-24 12:10:18,634 WARN L169 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-07-24 12:10:18,639 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:20,998 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:23,257 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:27,424 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:29,558 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:33,669 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:35,932 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:40,032 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:42,902 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:46,992 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:49,179 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:53,383 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:55,540 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:10:59,684 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:03,786 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:05,925 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:08,043 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:10,183 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:12,616 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:12,783 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:15,038 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:18,032 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:20,160 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:24,246 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:26,390 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:28,587 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:32,702 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:34,982 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:35,486 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:37,725 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:40,034 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:42,358 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:46,459 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:50,573 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:52,701 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:11:56,796 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:00,881 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:03,699 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:05,843 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:06,482 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:08,868 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 Received shutdown request... [2018-07-24 12:12:12,925 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:12:13,126 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:12:13,127 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:12:13,133 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:12:13,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:12:13 BoogieIcfgContainer [2018-07-24 12:12:13,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:12:13,134 INFO L168 Benchmark]: Toolchain (without parser) took 255770.38 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 207.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:13,135 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:12:13,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1353.92 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:13,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 258.53 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:13,138 INFO L168 Benchmark]: Boogie Preprocessor took 712.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:13,138 INFO L168 Benchmark]: RCFGBuilder took 7034.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 326.6 MB). Peak memory consumption was 326.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:12:13,139 INFO L168 Benchmark]: TraceAbstraction took 246405.43 ms. Allocated memory was 2.4 GB in the beginning and 3.2 GB in the end (delta: 787.5 MB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -916.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:12:13,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1353.92 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 258.53 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 712.83 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7034.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 326.6 MB). Peak memory consumption was 326.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246405.43 ms. Allocated memory was 2.4 GB in the beginning and 3.2 GB in the end (delta: 787.5 MB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -916.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was analyzing trace of length 592 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PredicateComparison was comparing new predicate (quantified with 1quantifier alternations) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 246.3s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 67.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4037 SDtfs, 8322 SDslu, 1437 SDs, 0 SdLazy, 15613 SolverSat, 4004 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 60.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2696 GetRequests, 2642 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13331occurred in iteration=9, 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: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1249 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4070 NumberOfCodeBlocks, 4070 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5368 ConstructedInterpolants, 0 QuantifiedInterpolants, 8646282 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2076 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2599/3272 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/Problem15_label09_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-12-13-169.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label09_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-12-13-169.csv Completed graceful shutdown