java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:38:39,608 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:38:39,611 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:38:39,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:38:39,624 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:38:39,625 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:38:39,627 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:38:39,628 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:38:39,630 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:38:39,631 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:38:39,632 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:38:39,632 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:38:39,633 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:38:39,634 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:38:39,635 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:38:39,636 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:38:39,637 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:38:39,639 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:38:39,641 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:38:39,643 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:38:39,644 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:38:39,645 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:38:39,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:38:39,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:38:39,649 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:38:39,650 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:38:39,651 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:38:39,652 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:38:39,652 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:38:39,654 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:38:39,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:38:39,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-10 11:38:39,657 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:38:39,688 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:38:39,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:38:39,689 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:38:39,692 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:38:39,692 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:38:39,693 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:38:39,693 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:38:39,693 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:38:39,693 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:38:39,693 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:38:39,694 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:38:39,695 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:38:39,695 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:38:39,695 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:38:39,696 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:38:39,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:38:39,696 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:38:39,696 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:38:39,696 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:38:39,697 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:38:39,698 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:38:39,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:38:39,698 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:38:39,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:38:39,698 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:38:39,698 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:38:39,699 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:38:39,699 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:38:39,699 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:38:39,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:38:39,700 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:38:39,700 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:38:39,700 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:38:39,758 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:38:39,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:38:39,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:38:39,776 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:38:39,776 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:38:39,777 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label46_true-unreach-call.c [2018-09-10 11:38:40,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2ff955/3cf3ea8076c7467c8f6b638ec3381484/FLAG2b7fb795f [2018-09-10 11:38:40,496 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:38:40,497 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label46_true-unreach-call.c [2018-09-10 11:38:40,517 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2ff955/3cf3ea8076c7467c8f6b638ec3381484/FLAG2b7fb795f [2018-09-10 11:38:40,533 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c2ff955/3cf3ea8076c7467c8f6b638ec3381484 [2018-09-10 11:38:40,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:38:40,550 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:38:40,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:38:40,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:38:40,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:38:40,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:38:40" (1/1) ... [2018-09-10 11:38:40,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e80f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:40, skipping insertion in model container [2018-09-10 11:38:40,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:38:40" (1/1) ... [2018-09-10 11:38:40,806 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:38:41,249 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:38:41,272 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:38:41,465 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:38:41,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41 WrapperNode [2018-09-10 11:38:41,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:38:41,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:38:41,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:38:41,551 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:38:41,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:41,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:41,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:38:41,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:38:41,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:38:41,715 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:38:41,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:41,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:41,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:41,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:42,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:42,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:42,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... [2018-09-10 11:38:42,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:38:42,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:38:42,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:38:42,077 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:38:42,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:38:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:38:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:38:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:38:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:38:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:38:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:38:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:38:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:38:47,257 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:38:47,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:38:47 BoogieIcfgContainer [2018-09-10 11:38:47,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:38:47,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:38:47,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:38:47,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:38:47,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:38:40" (1/3) ... [2018-09-10 11:38:47,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28166312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:38:47, skipping insertion in model container [2018-09-10 11:38:47,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:38:41" (2/3) ... [2018-09-10 11:38:47,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28166312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:38:47, skipping insertion in model container [2018-09-10 11:38:47,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:38:47" (3/3) ... [2018-09-10 11:38:47,267 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label46_true-unreach-call.c [2018-09-10 11:38:47,276 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:38:47,284 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:38:47,340 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:38:47,341 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:38:47,342 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:38:47,342 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:38:47,342 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:38:47,342 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:38:47,342 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:38:47,343 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:38:47,343 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:38:47,372 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-10 11:38:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-10 11:38:47,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:38:47,385 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:38:47,386 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:38:47,392 INFO L82 PathProgramCache]: Analyzing trace with hash 992823241, now seen corresponding path program 1 times [2018-09-10 11:38:47,395 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:38:47,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:38:47,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:38:47,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:38:47,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:38:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:38:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:38:47,887 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:38:47,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:38:47,888 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:38:47,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:38:47,913 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:38:47,914 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:38:47,916 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-09-10 11:38:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:38:50,329 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-09-10 11:38:50,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:38:50,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-09-10 11:38:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:38:50,353 INFO L225 Difference]: With dead ends: 782 [2018-09-10 11:38:50,353 INFO L226 Difference]: Without dead ends: 487 [2018-09-10 11:38:50,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:38:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-10 11:38:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-09-10 11:38:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-09-10 11:38:50,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-09-10 11:38:50,466 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 69 [2018-09-10 11:38:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:38:50,467 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-09-10 11:38:50,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:38:50,467 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-09-10 11:38:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-10 11:38:50,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:38:50,477 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:38:50,477 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:38:50,478 INFO L82 PathProgramCache]: Analyzing trace with hash 742048031, now seen corresponding path program 1 times [2018-09-10 11:38:50,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:38:50,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:38:50,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:38:50,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:38:50,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:38:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:38:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:38:51,098 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:38:51,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:38:51,099 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:38:51,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:38:51,101 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:38:51,101 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:38:51,102 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-09-10 11:38:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:38:59,378 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-09-10 11:38:59,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:38:59,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2018-09-10 11:38:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:38:59,392 INFO L225 Difference]: With dead ends: 1760 [2018-09-10 11:38:59,393 INFO L226 Difference]: Without dead ends: 1284 [2018-09-10 11:38:59,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:38:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-09-10 11:38:59,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-09-10 11:38:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-09-10 11:38:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-09-10 11:38:59,487 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 144 [2018-09-10 11:38:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:38:59,488 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-09-10 11:38:59,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:38:59,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-09-10 11:38:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-09-10 11:38:59,495 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:38:59,495 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:38:59,495 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:38:59,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1965616979, now seen corresponding path program 1 times [2018-09-10 11:38:59,496 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:38:59,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:38:59,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:38:59,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:38:59,497 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:38:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:38:59,800 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:38:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 124 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:38:59,917 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:38:59,917 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:38:59,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:38:59,931 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:00,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 11:39:00,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 124 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:39:00,930 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:39:00,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:39:00,930 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:39:00,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:39:00,932 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:39:00,932 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:39:00,932 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 5 states. [2018-09-10 11:39:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:39:08,027 INFO L93 Difference]: Finished difference Result 3395 states and 5619 transitions. [2018-09-10 11:39:08,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:39:08,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-09-10 11:39:08,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:39:08,050 INFO L225 Difference]: With dead ends: 3395 [2018-09-10 11:39:08,051 INFO L226 Difference]: Without dead ends: 2364 [2018-09-10 11:39:08,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 429 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:39:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2018-09-10 11:39:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2323. [2018-09-10 11:39:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-09-10 11:39:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3627 transitions. [2018-09-10 11:39:08,149 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3627 transitions. Word has length 217 [2018-09-10 11:39:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:39:08,150 INFO L480 AbstractCegarLoop]: Abstraction has 2323 states and 3627 transitions. [2018-09-10 11:39:08,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:39:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3627 transitions. [2018-09-10 11:39:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-10 11:39:08,159 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:08,161 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:39:08,161 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:39:08,161 INFO L82 PathProgramCache]: Analyzing trace with hash -645920121, now seen corresponding path program 1 times [2018-09-10 11:39:08,161 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:08,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:08,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:08,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:08,163 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:39:08,569 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:39:08,569 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:39:08,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:08,579 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:08,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:11,307 WARN L1032 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_5 Int)) (let ((.cse0 (mod (+ (div v_prenex_5 5) 1) 90))) (and (= 0 .cse0) (not (= 0 (mod v_prenex_5 5))) (< v_prenex_5 0) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_5) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ .cse0 49))))) (exists ((v_prenex_6 Int)) (let ((.cse2 (+ (div v_prenex_6 5) 1))) (let ((.cse1 (mod .cse2 90))) (and (<= (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 41) .cse1) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_6) (not (= 0 .cse1)) (< v_prenex_6 0) (< .cse2 0) (not (= 0 (mod v_prenex_6 5))))))) (exists ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_492 Int)) (let ((.cse3 (+ (div v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_492 5) 1))) (and (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_492) (not (= 0 (mod v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_492 5))) (< v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0_492 0) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ (mod .cse3 90) 49)) (<= 0 .cse3)))) (exists ((v_prenex_8 Int)) (let ((.cse5 (div v_prenex_8 5))) (let ((.cse4 (mod .cse5 90))) (and (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_8) (not (= .cse4 0)) (= 0 (mod v_prenex_8 5)) (<= (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 41) .cse4) (< .cse5 0))))) (exists ((v_prenex_2 Int)) (let ((.cse6 (mod (div v_prenex_2 5) 90))) (and (= .cse6 0) (= 0 (mod v_prenex_2 5)) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_2) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ .cse6 49))))) (exists ((v_prenex_3 Int)) (let ((.cse7 (div v_prenex_3 5))) (and (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_3) (= 0 (mod v_prenex_3 5)) (<= 0 .cse7) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ (mod .cse7 90) 49))))) (exists ((v_prenex_7 Int)) (let ((.cse8 (mod (div v_prenex_7 5) 90))) (and (<= 0 v_prenex_7) (= .cse8 0) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_7) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ .cse8 49))))) (exists ((v_prenex_1 Int)) (let ((.cse10 (div v_prenex_1 5))) (let ((.cse9 (mod .cse10 90))) (and (<= (+ c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 41) .cse9) (< .cse10 0) (<= 0 v_prenex_1) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_1) (not (= .cse9 0)))))) (exists ((v_prenex_4 Int)) (let ((.cse11 (div v_prenex_4 5))) (and (<= 0 v_prenex_4) (<= 0 .cse11) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0)| v_prenex_4) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a23~0 (+ (mod .cse11 90) 49)))))) is different from true [2018-09-10 11:39:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-09-10 11:39:11,596 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:39:12,126 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:39:12,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-09-10 11:39:12,127 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:39:12,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:39:12,128 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:39:12,129 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-09-10 11:39:12,129 INFO L87 Difference]: Start difference. First operand 2323 states and 3627 transitions. Second operand 3 states. [2018-09-10 11:39:14,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:39:14,459 INFO L93 Difference]: Finished difference Result 6306 states and 10212 transitions. [2018-09-10 11:39:14,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:39:14,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2018-09-10 11:39:14,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:39:14,488 INFO L225 Difference]: With dead ends: 6306 [2018-09-10 11:39:14,488 INFO L226 Difference]: Without dead ends: 3989 [2018-09-10 11:39:14,506 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 521 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-09-10 11:39:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2018-09-10 11:39:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3955. [2018-09-10 11:39:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3955 states. [2018-09-10 11:39:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 6081 transitions. [2018-09-10 11:39:14,639 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 6081 transitions. Word has length 261 [2018-09-10 11:39:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:39:14,640 INFO L480 AbstractCegarLoop]: Abstraction has 3955 states and 6081 transitions. [2018-09-10 11:39:14,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:39:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 6081 transitions. [2018-09-10 11:39:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-10 11:39:14,658 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:14,658 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:39:14,658 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:39:14,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1933657177, now seen corresponding path program 1 times [2018-09-10 11:39:14,659 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:14,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:14,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:14,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:14,660 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:15,268 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:15,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:39:15,269 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:39:15,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:15,285 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:15,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 11:39:16,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-10 11:39:16,537 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:39:16,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:39:16,537 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:39:16,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:39:16,538 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:39:16,538 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:39:16,539 INFO L87 Difference]: Start difference. First operand 3955 states and 6081 transitions. Second operand 5 states. [2018-09-10 11:39:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:39:19,745 INFO L93 Difference]: Finished difference Result 10588 states and 16598 transitions. [2018-09-10 11:39:19,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:39:19,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-09-10 11:39:19,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:39:19,791 INFO L225 Difference]: With dead ends: 10588 [2018-09-10 11:39:19,791 INFO L226 Difference]: Without dead ends: 6639 [2018-09-10 11:39:19,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 548 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:39:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2018-09-10 11:39:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6588. [2018-09-10 11:39:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6588 states. [2018-09-10 11:39:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 9121 transitions. [2018-09-10 11:39:19,998 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 9121 transitions. Word has length 277 [2018-09-10 11:39:19,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:39:19,999 INFO L480 AbstractCegarLoop]: Abstraction has 6588 states and 9121 transitions. [2018-09-10 11:39:19,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:39:19,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 9121 transitions. [2018-09-10 11:39:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-09-10 11:39:20,030 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:20,031 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:39:20,031 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:39:20,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2092355643, now seen corresponding path program 1 times [2018-09-10 11:39:20,031 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:20,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:20,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:20,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:20,033 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:39:20,478 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:39:20,478 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:39:20,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:20,489 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:20,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:20,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:21,102 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:39:21,102 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:39:21,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:21,119 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:21,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:22,092 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:39:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:22,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:22,542 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:39:22,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-10 11:39:22,543 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:39:22,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 11:39:22,544 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 11:39:22,544 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:39:22,544 INFO L87 Difference]: Start difference. First operand 6588 states and 9121 transitions. Second operand 10 states. [2018-09-10 11:39:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:39:41,398 INFO L93 Difference]: Finished difference Result 27439 states and 46239 transitions. [2018-09-10 11:39:41,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-10 11:39:41,399 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 292 [2018-09-10 11:39:41,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:39:41,596 INFO L225 Difference]: With dead ends: 27439 [2018-09-10 11:39:41,596 INFO L226 Difference]: Without dead ends: 20857 [2018-09-10 11:39:41,739 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1253 GetRequests, 1187 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=757, Invalid=3533, Unknown=0, NotChecked=0, Total=4290 [2018-09-10 11:39:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20857 states. [2018-09-10 11:39:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20857 to 19223. [2018-09-10 11:39:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19223 states. [2018-09-10 11:39:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19223 states to 19223 states and 25857 transitions. [2018-09-10 11:39:42,480 INFO L78 Accepts]: Start accepts. Automaton has 19223 states and 25857 transitions. Word has length 292 [2018-09-10 11:39:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:39:42,481 INFO L480 AbstractCegarLoop]: Abstraction has 19223 states and 25857 transitions. [2018-09-10 11:39:42,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 11:39:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19223 states and 25857 transitions. [2018-09-10 11:39:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-09-10 11:39:42,528 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:39:42,528 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:39:42,529 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:39:42,529 INFO L82 PathProgramCache]: Analyzing trace with hash 625405564, now seen corresponding path program 1 times [2018-09-10 11:39:42,529 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:39:42,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:42,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:42,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:39:42,530 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:39:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-10 11:39:43,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:39:43,425 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:39:43,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:43,434 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:43,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:44,316 WARN L1032 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_43 Int)) (and (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0)| v_prenex_43) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0 (+ (mod v_prenex_43 15) 260)) (<= 0 v_prenex_43))) (exists ((v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_562 Int)) (let ((.cse0 (mod v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_562 15))) (and (not (= .cse0 0)) (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0 (+ .cse0 245)) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0)| v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_562) (< v_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0_562 0)))) (exists ((v_prenex_44 Int)) (let ((.cse1 (mod v_prenex_44 15))) (and (<= c_~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0 (+ .cse1 260)) (<= |c_old(~__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__a29~0)| v_prenex_44) (= .cse1 0))))) is different from true [2018-09-10 11:39:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 125 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-09-10 11:39:44,623 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:44,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:39:44,908 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:39:44,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:39:44,924 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:39:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:39:45,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:39:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 125 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:45,525 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:39:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:39:45,690 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:39:45,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5, 8, 5] total 21 [2018-09-10 11:39:45,690 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:39:45,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-10 11:39:45,693 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-10 11:39:45,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=321, Unknown=1, NotChecked=36, Total=420 [2018-09-10 11:39:45,693 INFO L87 Difference]: Start difference. First operand 19223 states and 25857 transitions. Second operand 15 states. [2018-09-10 11:39:54,990 WARN L175 SmtUtils]: Spent 7.81 s on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2018-09-10 11:40:25,891 WARN L175 SmtUtils]: Spent 7.51 s on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2018-09-10 11:40:39,559 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-09-10 11:40:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:40:50,877 INFO L93 Difference]: Finished difference Result 73996 states and 124490 transitions. [2018-09-10 11:40:50,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-09-10 11:40:50,877 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2018-09-10 11:40:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:40:51,237 INFO L225 Difference]: With dead ends: 73996 [2018-09-10 11:40:51,237 INFO L226 Difference]: Without dead ends: 55286 [2018-09-10 11:40:51,472 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1190 SyntacticMatches, 6 SemanticMatches, 144 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8084 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=2447, Invalid=18434, Unknown=3, NotChecked=286, Total=21170 [2018-09-10 11:40:51,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55286 states. [2018-09-10 11:40:53,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55286 to 53074. [2018-09-10 11:40:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53074 states. [2018-09-10 11:40:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53074 states to 53074 states and 71676 transitions. [2018-09-10 11:40:53,477 INFO L78 Accepts]: Start accepts. Automaton has 53074 states and 71676 transitions. Word has length 301 [2018-09-10 11:40:53,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:40:53,477 INFO L480 AbstractCegarLoop]: Abstraction has 53074 states and 71676 transitions. [2018-09-10 11:40:53,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-10 11:40:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 53074 states and 71676 transitions. [2018-09-10 11:40:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-10 11:40:53,522 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:40:53,522 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:40:53,523 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:40:53,523 INFO L82 PathProgramCache]: Analyzing trace with hash 279606219, now seen corresponding path program 1 times [2018-09-10 11:40:53,523 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:40:53,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:53,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:53,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:40:53,524 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:40:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:54,034 WARN L175 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-10 11:40:54,225 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-10 11:40:54,627 WARN L175 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 11:40:54,840 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-10 11:40:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:55,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:55,493 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:40:55,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:55,503 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:55,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:55,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:56,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:40:56,547 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:40:56,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:40:56,562 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:40:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:40:56,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:40:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:56,942 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:40:57,071 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 11:40:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:40:57,818 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:40:57,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 19 [2018-09-10 11:40:57,818 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:40:57,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 11:40:57,820 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 11:40:57,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-09-10 11:40:57,821 INFO L87 Difference]: Start difference. First operand 53074 states and 71676 transitions. Second operand 17 states. [2018-09-10 11:41:00,014 WARN L175 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2018-09-10 11:41:01,870 WARN L175 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2018-09-10 11:41:09,155 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-09-10 11:41:12,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:12,982 INFO L93 Difference]: Finished difference Result 110662 states and 189079 transitions. [2018-09-10 11:41:12,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-10 11:41:12,983 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 330 [2018-09-10 11:41:12,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:13,464 INFO L225 Difference]: With dead ends: 110662 [2018-09-10 11:41:13,465 INFO L226 Difference]: Without dead ends: 58101 [2018-09-10 11:41:13,817 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1389 GetRequests, 1329 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=804, Invalid=2618, Unknown=0, NotChecked=0, Total=3422 [2018-09-10 11:41:13,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58101 states. [2018-09-10 11:41:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58101 to 55472. [2018-09-10 11:41:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55472 states. [2018-09-10 11:41:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55472 states to 55472 states and 73440 transitions. [2018-09-10 11:41:15,843 INFO L78 Accepts]: Start accepts. Automaton has 55472 states and 73440 transitions. Word has length 330 [2018-09-10 11:41:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:15,844 INFO L480 AbstractCegarLoop]: Abstraction has 55472 states and 73440 transitions. [2018-09-10 11:41:15,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 11:41:15,844 INFO L276 IsEmpty]: Start isEmpty. Operand 55472 states and 73440 transitions. [2018-09-10 11:41:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-09-10 11:41:15,884 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:15,885 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:41:15,885 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:15,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1500573813, now seen corresponding path program 1 times [2018-09-10 11:41:15,886 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:15,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:15,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:15,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:15,887 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-10 11:41:16,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:16,144 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:41:16,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:16,162 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:16,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-10 11:41:17,059 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-10 11:41:17,357 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:41:17,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-10 11:41:17,358 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:41:17,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:41:17,359 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:41:17,359 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:17,359 INFO L87 Difference]: Start difference. First operand 55472 states and 73440 transitions. Second operand 3 states. [2018-09-10 11:41:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:19,644 INFO L93 Difference]: Finished difference Result 107137 states and 143343 transitions. [2018-09-10 11:41:19,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:41:19,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 345 [2018-09-10 11:41:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:19,793 INFO L225 Difference]: With dead ends: 107137 [2018-09-10 11:41:19,793 INFO L226 Difference]: Without dead ends: 52381 [2018-09-10 11:41:19,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 689 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52381 states. [2018-09-10 11:41:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52381 to 51589. [2018-09-10 11:41:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51589 states. [2018-09-10 11:41:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51589 states to 51589 states and 63306 transitions. [2018-09-10 11:41:20,778 INFO L78 Accepts]: Start accepts. Automaton has 51589 states and 63306 transitions. Word has length 345 [2018-09-10 11:41:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:20,779 INFO L480 AbstractCegarLoop]: Abstraction has 51589 states and 63306 transitions. [2018-09-10 11:41:20,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:41:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 51589 states and 63306 transitions. [2018-09-10 11:41:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-09-10 11:41:20,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:20,803 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:41:20,803 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:20,803 INFO L82 PathProgramCache]: Analyzing trace with hash 308886860, now seen corresponding path program 1 times [2018-09-10 11:41:20,803 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:20,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:20,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:20,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:20,805 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:21,310 WARN L175 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-10 11:41:21,494 WARN L175 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-10 11:41:21,953 WARN L175 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-10 11:41:22,362 WARN L175 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-10 11:41:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 255 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:22,880 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:22,880 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:41:22,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:22,888 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:23,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:24,551 WARN L175 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2018-09-10 11:41:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:27,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:28,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:41:28,171 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 11:41:28,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:28,187 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:41:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:28,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:41:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 125 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:31,067 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:41:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:32,328 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:41:32,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 5, 8, 5] total 28 [2018-09-10 11:41:32,329 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:41:32,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 11:41:32,330 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 11:41:32,330 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=618, Unknown=2, NotChecked=0, Total=756 [2018-09-10 11:41:32,331 INFO L87 Difference]: Start difference. First operand 51589 states and 63306 transitions. Second operand 18 states. [2018-09-10 11:41:33,493 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-09-10 11:41:34,368 WARN L175 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2018-09-10 11:41:38,033 WARN L175 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-09-10 11:41:40,673 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-09-10 11:41:47,523 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2018-09-10 11:41:48,547 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2018-09-10 11:41:48,819 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2018-09-10 11:41:49,975 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-09-10 11:41:59,379 WARN L175 SmtUtils]: Spent 8.54 s on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-09-10 11:42:05,831 WARN L175 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-09-10 11:42:08,757 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-09-10 11:42:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:11,109 INFO L93 Difference]: Finished difference Result 138202 states and 178883 transitions. [2018-09-10 11:42:11,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-10 11:42:11,110 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 361 [2018-09-10 11:42:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:11,358 INFO L225 Difference]: With dead ends: 138202 [2018-09-10 11:42:11,358 INFO L226 Difference]: Without dead ends: 76306 [2018-09-10 11:42:11,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1443 SyntacticMatches, 6 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4311 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=2284, Invalid=9704, Unknown=2, NotChecked=0, Total=11990 [2018-09-10 11:42:11,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76306 states. [2018-09-10 11:42:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76306 to 71330. [2018-09-10 11:42:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71330 states. [2018-09-10 11:42:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71330 states to 71330 states and 84281 transitions. [2018-09-10 11:42:13,182 INFO L78 Accepts]: Start accepts. Automaton has 71330 states and 84281 transitions. Word has length 361 [2018-09-10 11:42:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:13,183 INFO L480 AbstractCegarLoop]: Abstraction has 71330 states and 84281 transitions. [2018-09-10 11:42:13,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 11:42:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 71330 states and 84281 transitions. [2018-09-10 11:42:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-09-10 11:42:13,232 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:13,233 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:13,233 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:13,234 INFO L82 PathProgramCache]: Analyzing trace with hash 370977756, now seen corresponding path program 1 times [2018-09-10 11:42:13,234 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:13,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:13,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:13,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:13,235 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:13,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:13,977 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:42:13,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:13,994 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:14,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:14,383 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2018-09-10 11:42:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:15,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:15,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:15,355 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 11:42:15,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:15,372 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:15,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:15,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:16,018 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:42:16,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:42:16,019 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:42:16,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:42:16,020 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:42:16,020 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:42:16,020 INFO L87 Difference]: Start difference. First operand 71330 states and 84281 transitions. Second operand 9 states. [2018-09-10 11:42:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:22,256 INFO L93 Difference]: Finished difference Result 149870 states and 177808 transitions. [2018-09-10 11:42:22,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-10 11:42:22,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 409 [2018-09-10 11:42:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:22,436 INFO L225 Difference]: With dead ends: 149870 [2018-09-10 11:42:22,436 INFO L226 Difference]: Without dead ends: 80487 [2018-09-10 11:42:22,584 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1650 GetRequests, 1634 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:42:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80487 states. [2018-09-10 11:42:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80487 to 79716. [2018-09-10 11:42:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79716 states. [2018-09-10 11:42:24,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79716 states to 79716 states and 92918 transitions. [2018-09-10 11:42:24,436 INFO L78 Accepts]: Start accepts. Automaton has 79716 states and 92918 transitions. Word has length 409 [2018-09-10 11:42:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:24,437 INFO L480 AbstractCegarLoop]: Abstraction has 79716 states and 92918 transitions. [2018-09-10 11:42:24,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:42:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 79716 states and 92918 transitions. [2018-09-10 11:42:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-09-10 11:42:24,498 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:24,499 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:24,499 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:24,499 INFO L82 PathProgramCache]: Analyzing trace with hash 912017610, now seen corresponding path program 1 times [2018-09-10 11:42:24,499 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:24,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:24,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:24,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:24,501 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:24,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:24,918 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:24,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:24,926 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:25,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 199 proven. 4 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2018-09-10 11:42:25,319 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 199 proven. 239 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:25,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:25,771 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:42:25,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:25,790 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:26,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:26,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 11:42:26,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:42:26,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 17 [2018-09-10 11:42:26,998 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:42:26,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:42:26,999 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:42:27,000 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:42:27,000 INFO L87 Difference]: Start difference. First operand 79716 states and 92918 transitions. Second operand 11 states. Received shutdown request... [2018-09-10 11:42:35,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-10 11:42:35,192 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:42:35,198 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:42:35,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:42:35 BoogieIcfgContainer [2018-09-10 11:42:35,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:42:35,199 INFO L168 Benchmark]: Toolchain (without parser) took 234651.46 ms. Allocated memory was 1.5 GB in the beginning and 3.9 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: -581.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-10 11:42:35,200 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:42:35,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 998.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:35,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:35,202 INFO L168 Benchmark]: Boogie Preprocessor took 360.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -946.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:35,204 INFO L168 Benchmark]: RCFGBuilder took 5182.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.3 MB). Peak memory consumption was 197.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:42:35,205 INFO L168 Benchmark]: TraceAbstraction took 227938.89 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 82.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 11:42:35,209 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 998.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 163.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 360.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -946.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5182.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.3 MB). Peak memory consumption was 197.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227938.89 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 82.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (79716states) and FLOYD_HOARE automaton (currently 43 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (40444 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 227.8s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 181.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2669 SDtfs, 31645 SDslu, 4989 SDs, 0 SdLazy, 61124 SolverSat, 12195 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 112.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11334 GetRequests, 10817 SyntacticMatches, 36 SemanticMatches, 481 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15544 ImplicationChecksByTransitivity, 62.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79716occurred 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: 9.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 13392 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 30.7s InterpolantComputationTime, 8860 NumberOfCodeBlocks, 8860 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 14214 ConstructedInterpolants, 31 QuantifiedInterpolants, 23633098 SizeOfPredicates, 18 NumberOfNonLiveVariables, 8895 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 44 InterpolantComputations, 6 PerfectInterpolantSequences, 11410/12582 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/Problem11_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-42-35-222.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-42-35-222.csv Completed graceful shutdown