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/Problem18_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:31:17,559 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:31:17,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:31:17,573 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:31:17,573 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:31:17,574 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:31:17,576 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:31:17,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:31:17,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:31:17,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:31:17,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:31:17,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:31:17,582 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:31:17,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:31:17,584 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:31:17,587 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:31:17,588 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:31:17,589 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:31:17,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:31:17,598 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:31:17,601 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:31:17,603 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:31:17,605 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:31:17,605 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:31:17,605 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:31:17,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:31:17,607 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:31:17,608 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:31:17,609 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:31:17,610 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:31:17,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:31:17,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:31:17,611 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:31:17,611 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:31:17,612 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:31:17,613 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:31:17,613 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 12:31:17,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:31:17,628 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:31:17,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:31:17,629 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:31:17,629 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:31:17,629 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:31:17,630 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:31:17,630 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:31:17,630 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:31:17,630 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:31:17,630 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:31:17,631 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:31:17,631 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:31:17,631 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:31:17,632 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:31:17,632 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:31:17,632 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:31:17,632 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:31:17,632 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:31:17,633 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:31:17,633 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:31:17,633 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:31:17,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:31:17,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:31:17,634 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:31:17,634 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:31:17,634 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:31:17,634 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:31:17,635 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:31:17,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:31:17,635 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:31:17,635 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:31:17,635 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:31:17,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:31:17,712 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:31:17,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:31:17,721 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:31:17,721 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:31:17,722 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12_false-unreach-call.c [2018-07-24 12:31:18,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62034a5ac/3c61648cb0e345e78c1280547a09fc9c/FLAG9030b4bdf [2018-07-24 12:31:18,511 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:31:18,512 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12_false-unreach-call.c [2018-07-24 12:31:18,538 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62034a5ac/3c61648cb0e345e78c1280547a09fc9c/FLAG9030b4bdf [2018-07-24 12:31:18,555 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62034a5ac/3c61648cb0e345e78c1280547a09fc9c [2018-07-24 12:31:18,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:31:18,568 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:31:18,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:31:18,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:31:18,577 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:31:18,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:31:18" (1/1) ... [2018-07-24 12:31:18,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536648b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:18, skipping insertion in model container [2018-07-24 12:31:18,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:31:18" (1/1) ... [2018-07-24 12:31:18,930 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:31:19,762 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:31:19,783 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:31:20,292 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:31:20,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20 WrapperNode [2018-07-24 12:31:20,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:31:20,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:31:20,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:31:20,442 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:31:20,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:20,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:20,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:31:20,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:31:20,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:31:20,650 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:31:21,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (1/1) ... [2018-07-24 12:31:21,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:31:21,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:31:21,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:31:21,304 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:31:21,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (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 12:31:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:31:21,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:31:21,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:31:21,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:31:21,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:31:21,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:31:21,375 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 12:31:21,375 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 12:31:21,375 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_output3 [2018-07-24 12:31:21,376 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_output3 [2018-07-24 12:31:21,376 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 12:31:21,376 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 12:31:30,242 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:31:30,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:31:30 BoogieIcfgContainer [2018-07-24 12:31:30,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:31:30,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:31:30,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:31:30,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:31:30,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:31:18" (1/3) ... [2018-07-24 12:31:30,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69664129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:31:30, skipping insertion in model container [2018-07-24 12:31:30,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:31:20" (2/3) ... [2018-07-24 12:31:30,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69664129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:31:30, skipping insertion in model container [2018-07-24 12:31:30,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:31:30" (3/3) ... [2018-07-24 12:31:30,252 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label12_false-unreach-call.c [2018-07-24 12:31:30,263 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:31:30,272 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:31:30,333 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:31:30,334 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:31:30,334 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:31:30,334 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:31:30,335 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:31:30,335 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:31:30,335 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:31:30,335 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:31:30,335 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:31:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:31:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-24 12:31:30,388 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:30,389 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] [2018-07-24 12:31:30,390 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 12:31:30,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1745282100, now seen corresponding path program 1 times [2018-07-24 12:31:30,398 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:30,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:30,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:30,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:30,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:30,850 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:31:30,946 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 12:31:30,948 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:30,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:31:30,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:30,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:31:30,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:31:30,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:31:30,973 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 12:31:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:36,993 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 12:31:36,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:31:36,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-07-24 12:31:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:37,025 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 12:31:37,026 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 12:31:37,036 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:31:37,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 12:31:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 12:31:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 12:31:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-07-24 12:31:37,186 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 24 [2018-07-24 12:31:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:37,187 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-07-24 12:31:37,187 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:31:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-07-24 12:31:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-24 12:31:37,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:37,197 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:31:37,197 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 12:31:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash 288582031, now seen corresponding path program 1 times [2018-07-24 12:31:37,197 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:37,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:37,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:37,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:37,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:37,526 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:37,527 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:37,527 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:31:37,527 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:37,529 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:31:37,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:31:37,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:31:37,530 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-07-24 12:31:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:46,694 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-07-24 12:31:46,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:31:46,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-07-24 12:31:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:46,714 INFO L225 Difference]: With dead ends: 4419 [2018-07-24 12:31:46,715 INFO L226 Difference]: Without dead ends: 2951 [2018-07-24 12:31:46,720 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:31:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-07-24 12:31:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-07-24 12:31:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-07-24 12:31:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-07-24 12:31:46,822 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 95 [2018-07-24 12:31:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:46,822 INFO L471 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-07-24 12:31:46,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:31:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-07-24 12:31:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-24 12:31:46,827 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:46,827 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:31:46,827 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 12:31:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash -904452370, now seen corresponding path program 1 times [2018-07-24 12:31:46,828 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:46,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:46,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:46,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:46,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:46,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:46,994 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:46,994 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:31:46,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:46,995 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:31:46,995 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:31:46,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:31:46,995 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 5 states. [2018-07-24 12:31:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:58,147 INFO L93 Difference]: Finished difference Result 10300 states and 17313 transitions. [2018-07-24 12:31:58,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:31:58,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-07-24 12:31:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:58,200 INFO L225 Difference]: With dead ends: 10300 [2018-07-24 12:31:58,201 INFO L226 Difference]: Without dead ends: 7381 [2018-07-24 12:31:58,217 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:31:58,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7381 states. [2018-07-24 12:31:58,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7381 to 7291. [2018-07-24 12:31:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7291 states. [2018-07-24 12:31:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 10505 transitions. [2018-07-24 12:31:58,422 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 10505 transitions. Word has length 100 [2018-07-24 12:31:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:58,423 INFO L471 AbstractCegarLoop]: Abstraction has 7291 states and 10505 transitions. [2018-07-24 12:31:58,423 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:31:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 10505 transitions. [2018-07-24 12:31:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-24 12:31:58,427 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:58,427 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:31:58,428 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 12:31:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1833236654, now seen corresponding path program 1 times [2018-07-24 12:31:58,428 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:58,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:58,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:58,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:58,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:58,721 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:31:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:58,826 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:58,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:31:58,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:58,827 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:31:58,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:31:58,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:31:58,828 INFO L87 Difference]: Start difference. First operand 7291 states and 10505 transitions. Second operand 6 states. [2018-07-24 12:32:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:04,847 INFO L93 Difference]: Finished difference Result 17617 states and 25520 transitions. [2018-07-24 12:32:04,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:32:04,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-07-24 12:32:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:04,896 INFO L225 Difference]: With dead ends: 17617 [2018-07-24 12:32:04,897 INFO L226 Difference]: Without dead ends: 10332 [2018-07-24 12:32:04,920 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 12:32:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10332 states. [2018-07-24 12:32:05,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10332 to 10273. [2018-07-24 12:32:05,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10273 states. [2018-07-24 12:32:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10273 states to 10273 states and 13373 transitions. [2018-07-24 12:32:05,184 INFO L78 Accepts]: Start accepts. Automaton has 10273 states and 13373 transitions. Word has length 132 [2018-07-24 12:32:05,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:05,185 INFO L471 AbstractCegarLoop]: Abstraction has 10273 states and 13373 transitions. [2018-07-24 12:32:05,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:32:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 10273 states and 13373 transitions. [2018-07-24 12:32:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-24 12:32:05,190 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:05,195 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:05,195 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 12:32:05,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1191961247, now seen corresponding path program 1 times [2018-07-24 12:32:05,195 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:05,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:05,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:05,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:05,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:06,004 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-07-24 12:32:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:06,078 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:06,078 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 12:32:06,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:06,094 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:06,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:06,500 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:07,532 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:07,532 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:32:07,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:07,562 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:07,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:08,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:08,456 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:08,458 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:32:08,459 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 16 [2018-07-24 12:32:08,459 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:32:08,460 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 12:32:08,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 12:32:08,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:32:08,461 INFO L87 Difference]: Start difference. First operand 10273 states and 13373 transitions. Second operand 12 states. [2018-07-24 12:32:11,606 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-07-24 12:32:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:27,181 INFO L93 Difference]: Finished difference Result 32018 states and 42351 transitions. [2018-07-24 12:32:27,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-24 12:32:27,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 211 [2018-07-24 12:32:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:27,301 INFO L225 Difference]: With dead ends: 32018 [2018-07-24 12:32:27,301 INFO L226 Difference]: Without dead ends: 21751 [2018-07-24 12:32:27,352 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 841 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=410, Invalid=1312, Unknown=0, NotChecked=0, Total=1722 [2018-07-24 12:32:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21751 states. [2018-07-24 12:32:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21751 to 20801. [2018-07-24 12:32:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20801 states. [2018-07-24 12:32:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20801 states to 20801 states and 25394 transitions. [2018-07-24 12:32:27,857 INFO L78 Accepts]: Start accepts. Automaton has 20801 states and 25394 transitions. Word has length 211 [2018-07-24 12:32:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:27,858 INFO L471 AbstractCegarLoop]: Abstraction has 20801 states and 25394 transitions. [2018-07-24 12:32:27,858 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 12:32:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20801 states and 25394 transitions. [2018-07-24 12:32:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-24 12:32:27,862 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:27,863 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:27,863 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 12:32:27,863 INFO L82 PathProgramCache]: Analyzing trace with hash 79013165, now seen corresponding path program 1 times [2018-07-24 12:32:27,863 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:27,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:27,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:27,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:27,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:28,537 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:28,537 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 12:32:28,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:28,549 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:28,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:29,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:29,723 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:29,724 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 12:32:29,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:29,739 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:29,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:29,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:30,343 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:30,347 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:32:30,347 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:32:30,348 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:32:30,348 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:32:30,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:32:30,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:32:30,356 INFO L87 Difference]: Start difference. First operand 20801 states and 25394 transitions. Second operand 9 states. [2018-07-24 12:32:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:46,883 INFO L93 Difference]: Finished difference Result 48886 states and 61567 transitions. [2018-07-24 12:32:46,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:32:46,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2018-07-24 12:32:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:46,998 INFO L225 Difference]: With dead ends: 48886 [2018-07-24 12:32:46,998 INFO L226 Difference]: Without dead ends: 26685 [2018-07-24 12:32:47,074 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 883 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:32:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26685 states. [2018-07-24 12:32:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26685 to 25887. [2018-07-24 12:32:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25887 states. [2018-07-24 12:32:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25887 states to 25887 states and 30356 transitions. [2018-07-24 12:32:47,609 INFO L78 Accepts]: Start accepts. Automaton has 25887 states and 30356 transitions. Word has length 221 [2018-07-24 12:32:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:47,610 INFO L471 AbstractCegarLoop]: Abstraction has 25887 states and 30356 transitions. [2018-07-24 12:32:47,610 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:32:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 25887 states and 30356 transitions. [2018-07-24 12:32:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-24 12:32:47,618 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:47,619 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, 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] [2018-07-24 12:32:47,619 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 12:32:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1114021957, now seen corresponding path program 1 times [2018-07-24 12:32:47,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:47,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:47,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:47,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:47,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:48,367 WARN L169 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:32:48,831 WARN L169 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:32:49,494 WARN L169 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 12:32:49,741 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-07-24 12:32:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 152 proven. 87 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 12:32:50,126 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:50,126 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 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 12:32:50,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:50,332 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:50,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-07-24 12:32:50,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-07-24 12:32:50,649 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:32:50,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 14 [2018-07-24 12:32:50,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:50,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:32:50,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:32:50,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:32:50,651 INFO L87 Difference]: Start difference. First operand 25887 states and 30356 transitions. Second operand 3 states. [2018-07-24 12:32:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:55,801 INFO L93 Difference]: Finished difference Result 73676 states and 88816 transitions. [2018-07-24 12:32:55,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:32:55,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2018-07-24 12:32:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:55,958 INFO L225 Difference]: With dead ends: 73676 [2018-07-24 12:32:55,958 INFO L226 Difference]: Without dead ends: 47800 [2018-07-24 12:32:56,054 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:32:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47800 states. [2018-07-24 12:32:56,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47800 to 47775. [2018-07-24 12:32:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47775 states. [2018-07-24 12:32:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47775 states to 47775 states and 55254 transitions. [2018-07-24 12:32:57,406 INFO L78 Accepts]: Start accepts. Automaton has 47775 states and 55254 transitions. Word has length 317 [2018-07-24 12:32:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:57,410 INFO L471 AbstractCegarLoop]: Abstraction has 47775 states and 55254 transitions. [2018-07-24 12:32:57,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:32:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 47775 states and 55254 transitions. [2018-07-24 12:32:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-24 12:32:57,419 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:57,419 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:32:57,420 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 12:32:57,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1510023381, now seen corresponding path program 1 times [2018-07-24 12:32:57,421 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:57,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:57,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:57,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:57,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:58,136 WARN L169 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:32:58,596 WARN L169 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:32:58,864 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 12:32:59,271 WARN L169 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-07-24 12:32:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 152 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 12:32:59,669 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:59,669 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 12:32:59,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:59,677 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:59,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-07-24 12:32:59,963 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 51 proven. 184 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 12:33:00,904 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:33:00,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 17 [2018-07-24 12:33:00,904 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:00,905 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:33:00,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:33:00,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:33:00,905 INFO L87 Difference]: Start difference. First operand 47775 states and 55254 transitions. Second operand 5 states. [2018-07-24 12:33:08,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:08,659 INFO L93 Difference]: Finished difference Result 107858 states and 124587 transitions. [2018-07-24 12:33:08,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 12:33:08,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2018-07-24 12:33:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:08,823 INFO L225 Difference]: With dead ends: 107858 [2018-07-24 12:33:08,824 INFO L226 Difference]: Without dead ends: 60148 [2018-07-24 12:33:08,944 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 645 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:33:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60148 states. [2018-07-24 12:33:09,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60148 to 59966. [2018-07-24 12:33:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59966 states. [2018-07-24 12:33:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59966 states to 59966 states and 68492 transitions. [2018-07-24 12:33:09,969 INFO L78 Accepts]: Start accepts. Automaton has 59966 states and 68492 transitions. Word has length 325 [2018-07-24 12:33:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:09,970 INFO L471 AbstractCegarLoop]: Abstraction has 59966 states and 68492 transitions. [2018-07-24 12:33:09,970 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:33:09,970 INFO L276 IsEmpty]: Start isEmpty. Operand 59966 states and 68492 transitions. [2018-07-24 12:33:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-07-24 12:33:09,981 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:09,981 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, 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] [2018-07-24 12:33:09,981 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 12:33:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1864894266, now seen corresponding path program 1 times [2018-07-24 12:33:09,982 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:09,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:09,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:09,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:09,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:10,483 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:33:10,693 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:33:10,911 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:33:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 110 proven. 235 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:33:11,392 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:11,392 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 12:33:11,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:11,400 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:11,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:33:12,857 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 161 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 12:33:13,726 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:13,727 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:33:13,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:13,743 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:14,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 279 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:33:14,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 61 proven. 284 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:33:15,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:33:15,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5, 8, 8] total 27 [2018-07-24 12:33:15,306 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:33:15,307 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:33:15,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:33:15,308 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2018-07-24 12:33:15,308 INFO L87 Difference]: Start difference. First operand 59966 states and 68492 transitions. Second operand 16 states. [2018-07-24 12:33:43,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:43,555 INFO L93 Difference]: Finished difference Result 118813 states and 136426 transitions. [2018-07-24 12:33:43,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-07-24 12:33:43,555 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 414 [2018-07-24 12:33:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:43,703 INFO L225 Difference]: With dead ends: 118813 [2018-07-24 12:33:43,703 INFO L226 Difference]: Without dead ends: 53531 [2018-07-24 12:33:43,845 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1694 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1399, Invalid=5573, Unknown=0, NotChecked=0, Total=6972 [2018-07-24 12:33:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53531 states. [2018-07-24 12:33:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53531 to 49385. [2018-07-24 12:33:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49385 states. [2018-07-24 12:33:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49385 states to 49385 states and 55120 transitions. [2018-07-24 12:33:44,687 INFO L78 Accepts]: Start accepts. Automaton has 49385 states and 55120 transitions. Word has length 414 [2018-07-24 12:33:44,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:44,687 INFO L471 AbstractCegarLoop]: Abstraction has 49385 states and 55120 transitions. [2018-07-24 12:33:44,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:33:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 49385 states and 55120 transitions. [2018-07-24 12:33:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-07-24 12:33:44,695 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:44,696 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:44,696 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 12:33:44,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1321557369, now seen corresponding path program 1 times [2018-07-24 12:33:44,697 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:44,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:44,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:44,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:44,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 18 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:45,527 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:45,527 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 12:33:45,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:45,534 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:45,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:33:46,319 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:33:46,535 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:33:46,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-07-24 12:33:46,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:46,536 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:33:46,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:33:46,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:33:46,537 INFO L87 Difference]: Start difference. First operand 49385 states and 55120 transitions. Second operand 3 states. [2018-07-24 12:33:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:50,526 INFO L93 Difference]: Finished difference Result 94570 states and 105876 transitions. [2018-07-24 12:33:50,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:33:50,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 455 [2018-07-24 12:33:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:50,648 INFO L225 Difference]: With dead ends: 94570 [2018-07-24 12:33:50,648 INFO L226 Difference]: Without dead ends: 47305 [2018-07-24 12:33:50,740 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 912 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:33:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47305 states. [2018-07-24 12:33:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47305 to 46714. [2018-07-24 12:33:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46714 states. [2018-07-24 12:33:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46714 states to 46714 states and 50951 transitions. [2018-07-24 12:33:51,416 INFO L78 Accepts]: Start accepts. Automaton has 46714 states and 50951 transitions. Word has length 455 [2018-07-24 12:33:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:51,418 INFO L471 AbstractCegarLoop]: Abstraction has 46714 states and 50951 transitions. [2018-07-24 12:33:51,418 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:33:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 46714 states and 50951 transitions. [2018-07-24 12:33:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-07-24 12:33:51,443 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:51,443 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:51,444 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 12:33:51,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2132741222, now seen corresponding path program 1 times [2018-07-24 12:33:51,444 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:51,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:51,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:51,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:51,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-07-24 12:33:53,055 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:53,055 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:33:53,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:53,063 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:53,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2018-07-24 12:33:53,807 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 68 proven. 279 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-07-24 12:33:54,435 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:33:54,435 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 18 [2018-07-24 12:33:54,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:54,436 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:33:54,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:33:54,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:33:54,437 INFO L87 Difference]: Start difference. First operand 46714 states and 50951 transitions. Second operand 5 states. [2018-07-24 12:34:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:02,586 INFO L93 Difference]: Finished difference Result 106748 states and 118159 transitions. [2018-07-24 12:34:02,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:34:02,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 626 [2018-07-24 12:34:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:02,754 INFO L225 Difference]: With dead ends: 106748 [2018-07-24 12:34:02,755 INFO L226 Difference]: Without dead ends: 60748 [2018-07-24 12:34:02,853 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1244 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:34:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60748 states. [2018-07-24 12:34:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60748 to 60612. [2018-07-24 12:34:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60612 states. [2018-07-24 12:34:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60612 states to 60612 states and 66669 transitions. [2018-07-24 12:34:03,798 INFO L78 Accepts]: Start accepts. Automaton has 60612 states and 66669 transitions. Word has length 626 [2018-07-24 12:34:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:03,799 INFO L471 AbstractCegarLoop]: Abstraction has 60612 states and 66669 transitions. [2018-07-24 12:34:03,799 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:34:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 60612 states and 66669 transitions. [2018-07-24 12:34:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1155 [2018-07-24 12:34:03,824 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:03,825 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:03,825 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 12:34:03,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1015947548, now seen corresponding path program 1 times [2018-07-24 12:34:03,825 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:03,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:03,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:03,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:03,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 471 proven. 2 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2018-07-24 12:34:06,299 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:06,299 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 12:34:06,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:06,308 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:06,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 755 proven. 2 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-07-24 12:34:07,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 409 proven. 95 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2018-07-24 12:34:08,925 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:08,925 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 12:34:08,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:08,941 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:09,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:16,196 WARN L169 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 45 DAG size of output: 19 [2018-07-24 12:34:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 751 proven. 6 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2018-07-24 12:34:18,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:18,245 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-07-24 12:34:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 121 proven. 649 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-07-24 12:34:21,803 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:21,804 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 8, 8] total 28 [2018-07-24 12:34:21,804 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:21,806 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:34:21,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:34:21,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2018-07-24 12:34:21,807 INFO L87 Difference]: Start difference. First operand 60612 states and 66669 transitions. Second operand 16 states. [2018-07-24 12:34:22,068 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2018-07-24 12:34:23,802 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2018-07-24 12:34:24,628 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2018-07-24 12:34:26,376 WARN L169 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-07-24 12:34:26,746 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-07-24 12:34:27,798 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-07-24 12:34:34,521 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2018-07-24 12:34:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:39,930 INFO L93 Difference]: Finished difference Result 120247 states and 133602 transitions. [2018-07-24 12:34:39,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-07-24 12:34:39,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1154 [2018-07-24 12:34:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:40,090 INFO L225 Difference]: With dead ends: 120247 [2018-07-24 12:34:40,091 INFO L226 Difference]: Without dead ends: 59460 [2018-07-24 12:34:40,164 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4706 GetRequests, 4633 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=980, Invalid=4132, Unknown=0, NotChecked=0, Total=5112 [2018-07-24 12:34:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59460 states. [2018-07-24 12:34:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59460 to 57790. [2018-07-24 12:34:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57790 states. [2018-07-24 12:34:40,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57790 states to 57790 states and 62752 transitions. [2018-07-24 12:34:40,915 INFO L78 Accepts]: Start accepts. Automaton has 57790 states and 62752 transitions. Word has length 1154 [2018-07-24 12:34:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:40,916 INFO L471 AbstractCegarLoop]: Abstraction has 57790 states and 62752 transitions. [2018-07-24 12:34:40,916 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:34:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 57790 states and 62752 transitions. [2018-07-24 12:34:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1249 [2018-07-24 12:34:40,949 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:40,950 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:40,950 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 12:34:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1451062602, now seen corresponding path program 1 times [2018-07-24 12:34:40,951 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:40,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:40,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 883 proven. 726 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-07-24 12:34:44,371 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:44,371 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 12:34:44,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:44,380 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:44,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 581 proven. 2 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2018-07-24 12:34:45,619 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 581 proven. 2 refuted. 0 times theorem prover too weak. 1151 trivial. 0 not checked. [2018-07-24 12:34:46,499 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:46,499 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:34:46,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:46,515 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:47,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 883 proven. 6 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2018-07-24 12:34:48,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 885 proven. 4 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2018-07-24 12:34:49,138 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:49,139 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5, 5, 5] total 23 [2018-07-24 12:34:49,139 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:49,140 INFO L450 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-07-24 12:34:49,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-07-24 12:34:49,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:34:49,141 INFO L87 Difference]: Start difference. First operand 57790 states and 62752 transitions. Second operand 21 states. [2018-07-24 12:35:01,261 WARN L169 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 Received shutdown request... [2018-07-24 12:35:03,787 WARN L177 SmtUtils]: Removed 7 from assertion stack [2018-07-24 12:35:03,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-07-24 12:35:03,788 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:35:03,791 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:35:03,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:35:03 BoogieIcfgContainer [2018-07-24 12:35:03,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:35:03,793 INFO L168 Benchmark]: Toolchain (without parser) took 225225.95 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -574.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:35:03,794 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 12:35:03,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1871.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:35:03,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 207.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:35:03,796 INFO L168 Benchmark]: Boogie Preprocessor took 653.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:35:03,796 INFO L168 Benchmark]: RCFGBuilder took 8940.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 542.5 MB). Peak memory consumption was 542.5 MB. Max. memory is 7.1 GB. [2018-07-24 12:35:03,797 INFO L168 Benchmark]: TraceAbstraction took 213547.16 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -240.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 12:35:03,802 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 1871.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 207.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 653.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8940.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 542.5 MB). Peak memory consumption was 542.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213547.16 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -240.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (57790states) and interpolant automaton (currently 55 states, 21 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 43. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 213.4s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 155.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3912 SDtfs, 58554 SDslu, 3616 SDs, 0 SdLazy, 92201 SolverSat, 19480 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 117.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16915 GetRequests, 16518 SyntacticMatches, 33 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6129 ImplicationChecksByTransitivity, 30.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60612occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 8673 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 39.1s InterpolantComputationTime, 13541 NumberOfCodeBlocks, 13541 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 21719 ConstructedInterpolants, 7 QuantifiedInterpolants, 62478035 SizeOfPredicates, 26 NumberOfNonLiveVariables, 11894 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 19296/22265 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/Problem18_label12_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-35-03-823.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label12_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-35-03-823.csv Completed graceful shutdown