java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:10:42,360 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:10:42,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:10:42,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:10:42,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:10:42,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:10:42,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:10:42,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:10:42,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:10:42,381 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:10:42,382 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:10:42,383 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:10:42,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:10:42,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:10:42,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:10:42,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:10:42,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:10:42,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:10:42,391 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:10:42,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:10:42,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:10:42,395 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:10:42,397 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 12:10:42,404 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:10:42,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:10:42,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:10:42,406 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:10:42,407 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:10:42,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:10:42,423 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:10:42,424 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:10:42,424 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:10:42,424 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:10:42,425 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:10:42,425 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:10:42,425 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:10:42,425 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:10:42,425 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:10:42,426 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:10:42,426 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:10:42,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:10:42,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:10:42,427 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:10:42,427 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:10:42,427 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:10:42,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:10:42,428 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:10:42,428 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:10:42,428 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:10:42,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:10:42,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:10:42,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:10:42,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:10:42,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:10:42,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:10:42,430 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:10:42,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:10:42,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:10:42,430 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:10:42,430 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:10:42,431 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:10:42,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:10:42,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:10:42,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:10:42,496 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:10:42,496 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:10:42,497 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label30_false-unreach-call.c [2018-07-24 12:10:42,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb8b5c95/d3d9821bbda442ffb9ae4191a2fc275e/FLAGd4ab74408 [2018-07-24 12:10:43,287 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:10:43,288 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label30_false-unreach-call.c [2018-07-24 12:10:43,326 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb8b5c95/d3d9821bbda442ffb9ae4191a2fc275e/FLAGd4ab74408 [2018-07-24 12:10:43,348 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb8b5c95/d3d9821bbda442ffb9ae4191a2fc275e [2018-07-24 12:10:43,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:10:43,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:10:43,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:10:43,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:10:43,369 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:10:43,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:10:43" (1/1) ... [2018-07-24 12:10:43,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29cd6f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:43, skipping insertion in model container [2018-07-24 12:10:43,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:10:43" (1/1) ... [2018-07-24 12:10:43,619 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:10:44,238 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:10:44,256 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:10:44,538 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:10:44,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44 WrapperNode [2018-07-24 12:10:44,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:10:44,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:10:44,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:10:44,690 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:10:44,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:44,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:44,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:10:44,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:10:44,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:10:44,934 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:10:44,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:44,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:44,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:44,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:45,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:45,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:45,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... [2018-07-24 12:10:45,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:10:45,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:10:45,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:10:45,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:10:45,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:10:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:10:45,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:10:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:10:45,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:10:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:10:45,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:10:45,766 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:10:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:10:45,767 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:10:45,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:10:51,687 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:10:51,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:10:51 BoogieIcfgContainer [2018-07-24 12:10:51,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:10:51,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:10:51,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:10:51,693 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:10:51,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:10:43" (1/3) ... [2018-07-24 12:10:51,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241c0eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:10:51, skipping insertion in model container [2018-07-24 12:10:51,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:10:44" (2/3) ... [2018-07-24 12:10:51,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241c0eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:10:51, skipping insertion in model container [2018-07-24 12:10:51,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:10:51" (3/3) ... [2018-07-24 12:10:51,696 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label30_false-unreach-call.c [2018-07-24 12:10:51,706 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:10:51,715 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:10:51,768 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:10:51,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:10:51,769 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:10:51,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:10:51,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:10:51,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:10:51,770 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:10:51,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:10:51,770 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:10:51,800 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:10:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 12:10:51,807 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:10:51,808 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:10:51,808 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:10:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash -205987671, now seen corresponding path program 1 times [2018-07-24 12:10:51,817 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:10:51,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:51,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:10:51,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:10:51,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:10:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:10:52,242 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-07-24 12:10:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:10:52,264 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:10:52,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:10:52,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:10:52,270 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:10:52,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:10:52,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:10:52,291 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-07-24 12:11:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:03,123 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-07-24 12:11:03,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:11:03,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-07-24 12:11:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:03,154 INFO L225 Difference]: With dead ends: 1510 [2018-07-24 12:11:03,154 INFO L226 Difference]: Without dead ends: 1066 [2018-07-24 12:11:03,168 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:11:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-07-24 12:11:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-07-24 12:11:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-07-24 12:11:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-07-24 12:11:03,291 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 21 [2018-07-24 12:11:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:03,292 INFO L471 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-07-24 12:11:03,292 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:11:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-07-24 12:11:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-24 12:11:03,297 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:03,297 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:11:03,297 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:03,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1128813603, now seen corresponding path program 1 times [2018-07-24 12:11:03,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:03,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:03,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:03,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:03,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:03,646 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:11:03,646 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:11:03,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:03,648 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:11:03,649 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:11:03,649 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:11:03,649 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-07-24 12:11:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:10,235 INFO L93 Difference]: Finished difference Result 3981 states and 6119 transitions. [2018-07-24 12:11:10,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:11:10,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-07-24 12:11:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:10,260 INFO L225 Difference]: With dead ends: 3981 [2018-07-24 12:11:10,260 INFO L226 Difference]: Without dead ends: 2923 [2018-07-24 12:11:10,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:11:10,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-07-24 12:11:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2918. [2018-07-24 12:11:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2918 states. [2018-07-24 12:11:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 4017 transitions. [2018-07-24 12:11:10,382 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 4017 transitions. Word has length 91 [2018-07-24 12:11:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:10,383 INFO L471 AbstractCegarLoop]: Abstraction has 2918 states and 4017 transitions. [2018-07-24 12:11:10,383 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:11:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 4017 transitions. [2018-07-24 12:11:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-24 12:11:10,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:10,404 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:11:10,405 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:10,405 INFO L82 PathProgramCache]: Analyzing trace with hash 281024921, now seen corresponding path program 1 times [2018-07-24 12:11:10,405 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:10,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:10,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:10,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:10,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 31 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:11:11,043 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:11,044 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:11:11,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:11,055 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:11,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 12:11:11,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 12:11:13,007 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:11:13,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-07-24 12:11:13,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:13,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:11:13,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:11:13,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:11:13,010 INFO L87 Difference]: Start difference. First operand 2918 states and 4017 transitions. Second operand 5 states. [2018-07-24 12:11:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:21,000 INFO L93 Difference]: Finished difference Result 8739 states and 12216 transitions. [2018-07-24 12:11:21,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:11:21,007 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2018-07-24 12:11:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:21,052 INFO L225 Difference]: With dead ends: 8739 [2018-07-24 12:11:21,053 INFO L226 Difference]: Without dead ends: 5827 [2018-07-24 12:11:21,068 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:11:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5827 states. [2018-07-24 12:11:21,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5827 to 5782. [2018-07-24 12:11:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5782 states. [2018-07-24 12:11:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 7503 transitions. [2018-07-24 12:11:21,230 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 7503 transitions. Word has length 241 [2018-07-24 12:11:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:21,231 INFO L471 AbstractCegarLoop]: Abstraction has 5782 states and 7503 transitions. [2018-07-24 12:11:21,231 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:11:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 7503 transitions. [2018-07-24 12:11:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-07-24 12:11:21,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:21,239 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:11:21,239 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:21,239 INFO L82 PathProgramCache]: Analyzing trace with hash 354895940, now seen corresponding path program 1 times [2018-07-24 12:11:21,239 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:21,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:21,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:21,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:21,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:21,883 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:21,883 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:11:21,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:21,899 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:22,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:22,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:22,746 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:22,746 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:11:22,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:22,778 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:23,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:23,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:23,276 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:11:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:11:23,600 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:11:23,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:11:23,601 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:11:23,602 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:11:23,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:11:23,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:11:23,603 INFO L87 Difference]: Start difference. First operand 5782 states and 7503 transitions. Second operand 9 states. [2018-07-24 12:11:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:35,037 INFO L93 Difference]: Finished difference Result 16470 states and 23163 transitions. [2018-07-24 12:11:35,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 12:11:35,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2018-07-24 12:11:35,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:35,103 INFO L225 Difference]: With dead ends: 16470 [2018-07-24 12:11:35,103 INFO L226 Difference]: Without dead ends: 10694 [2018-07-24 12:11:35,158 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1258 GetRequests, 1236 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:11:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2018-07-24 12:11:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 10657. [2018-07-24 12:11:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10657 states. [2018-07-24 12:11:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 13502 transitions. [2018-07-24 12:11:35,477 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 13502 transitions. Word has length 309 [2018-07-24 12:11:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:35,478 INFO L471 AbstractCegarLoop]: Abstraction has 10657 states and 13502 transitions. [2018-07-24 12:11:35,478 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:11:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 13502 transitions. [2018-07-24 12:11:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-07-24 12:11:35,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:35,486 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:11:35,487 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:35,487 INFO L82 PathProgramCache]: Analyzing trace with hash -231305992, now seen corresponding path program 1 times [2018-07-24 12:11:35,487 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:35,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:35,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:35,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:35,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:11:35,972 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:35,972 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:11:35,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:35,980 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:36,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:36,683 WARN L169 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:11:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 12:11:36,809 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:37,461 WARN L169 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-07-24 12:11:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 28 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:11:37,975 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:11:37,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 12:11:37,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:37,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:11:37,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:11:37,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:11:37,977 INFO L87 Difference]: Start difference. First operand 10657 states and 13502 transitions. Second operand 5 states. [2018-07-24 12:11:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:11:50,691 INFO L93 Difference]: Finished difference Result 27226 states and 35373 transitions. [2018-07-24 12:11:50,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:11:50,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2018-07-24 12:11:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:11:50,765 INFO L225 Difference]: With dead ends: 27226 [2018-07-24 12:11:50,765 INFO L226 Difference]: Without dead ends: 16575 [2018-07-24 12:11:50,823 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 666 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:11:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16575 states. [2018-07-24 12:11:51,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16575 to 16164. [2018-07-24 12:11:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16164 states. [2018-07-24 12:11:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16164 states to 16164 states and 20117 transitions. [2018-07-24 12:11:51,246 INFO L78 Accepts]: Start accepts. Automaton has 16164 states and 20117 transitions. Word has length 334 [2018-07-24 12:11:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:11:51,247 INFO L471 AbstractCegarLoop]: Abstraction has 16164 states and 20117 transitions. [2018-07-24 12:11:51,247 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:11:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 16164 states and 20117 transitions. [2018-07-24 12:11:51,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-24 12:11:51,257 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:11:51,257 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:11:51,258 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:11:51,258 INFO L82 PathProgramCache]: Analyzing trace with hash 567000929, now seen corresponding path program 1 times [2018-07-24 12:11:51,258 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:11:51,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:51,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:51,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:11:51,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:11:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 17 proven. 117 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 12:11:52,482 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:11:52,482 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:11:52,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:11:52,499 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:11:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:11:52,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:11:52,936 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2018-07-24 12:11:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:11:53,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:11:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:11:53,668 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:11:53,669 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 12:11:53,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:11:53,670 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:11:53,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:11:53,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:11:53,670 INFO L87 Difference]: Start difference. First operand 16164 states and 20117 transitions. Second operand 3 states. [2018-07-24 12:12:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:12:01,820 INFO L93 Difference]: Finished difference Result 35280 states and 45862 transitions. [2018-07-24 12:12:01,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:12:01,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 408 [2018-07-24 12:12:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:12:01,906 INFO L225 Difference]: With dead ends: 35280 [2018-07-24 12:12:01,906 INFO L226 Difference]: Without dead ends: 19430 [2018-07-24 12:12:01,973 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 819 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:12:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19430 states. [2018-07-24 12:12:02,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19430 to 19423. [2018-07-24 12:12:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19423 states. [2018-07-24 12:12:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19423 states to 19423 states and 24676 transitions. [2018-07-24 12:12:02,412 INFO L78 Accepts]: Start accepts. Automaton has 19423 states and 24676 transitions. Word has length 408 [2018-07-24 12:12:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:12:02,413 INFO L471 AbstractCegarLoop]: Abstraction has 19423 states and 24676 transitions. [2018-07-24 12:12:02,413 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:12:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 19423 states and 24676 transitions. [2018-07-24 12:12:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-07-24 12:12:02,429 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:12:02,429 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:12:02,430 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:12:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash -165292532, now seen corresponding path program 1 times [2018-07-24 12:12:02,430 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:12:02,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:02,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:02,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:12:02,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:12:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:03,418 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 13 [2018-07-24 12:12:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 46 proven. 13 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-07-24 12:12:03,751 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:12:03,751 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:12:03,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:03,761 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:12:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:03,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:12:12,612 WARN L169 SmtUtils]: Spent 8.46 s on a formula simplification. DAG size of input: 388 DAG size of output: 24 [2018-07-24 12:12:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:12:12,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:12:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:12:13,430 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:12:13,430 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 12:12:13,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:12:13,446 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:12:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:12:13,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:12:24,353 WARN L169 SmtUtils]: Spent 10.30 s on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-07-24 12:12:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 182 proven. 111 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 12:12:24,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:12:32,254 WARN L169 SmtUtils]: Spent 7.07 s on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2018-07-24 12:12:32,861 WARN L169 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-07-24 12:12:32,866 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:32,997 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-07-24 12:12:43,771 WARN L169 SmtUtils]: Spent 8.58 s on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2018-07-24 12:12:43,775 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,787 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,796 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,802 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,808 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,814 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,819 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,825 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,830 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,836 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,852 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,857 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,867 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,872 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,878 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,884 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,889 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,895 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,901 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,907 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,912 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,919 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,924 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,929 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,935 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,942 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,948 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,953 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,959 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,965 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,971 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,976 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,982 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,988 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,993 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:43,999 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,005 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,010 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,016 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,021 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,027 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,037 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,042 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,047 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,057 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,064 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,069 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,074 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,084 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,089 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,094 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,099 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,104 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,109 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,114 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,119 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,125 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,130 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,135 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,140 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,145 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,150 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,155 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,160 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,165 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,170 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,175 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,180 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,185 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,190 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,195 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,200 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,205 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,210 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,215 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,220 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,225 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,230 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,234 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,239 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,244 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,249 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,254 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,259 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,264 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,268 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,273 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,278 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,283 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,288 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,294 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,298 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,303 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,308 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,312 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,317 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,322 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,326 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,331 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,336 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,341 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,346 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,351 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,357 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,361 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,366 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,371 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,375 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,380 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,385 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,391 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,395 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,400 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,405 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,410 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,414 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,419 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,425 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,429 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,434 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,439 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,443 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,448 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,452 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,458 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,462 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,467 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,472 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,476 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,481 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,485 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,490 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,494 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,499 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,504 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,509 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,514 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,519 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,524 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,529 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,534 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,538 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,543 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,548 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,552 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,557 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,562 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,567 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,572 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,577 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,582 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,587 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,592 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,597 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,602 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,607 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,612 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,617 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,622 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,627 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,632 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,637 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,642 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,647 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,652 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,657 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,662 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,667 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,672 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,677 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,683 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,688 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,693 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,698 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,703 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,708 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,713 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,718 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,723 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,728 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,733 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,739 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,744 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,749 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,754 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,759 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,764 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,769 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,774 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,779 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,784 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,789 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,794 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,799 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,804 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,810 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,814 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,819 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,824 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,829 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,834 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,839 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,844 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,849 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,854 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,859 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,864 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,869 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,875 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,881 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,886 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,891 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,895 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,900 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,904 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,909 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,913 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,918 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,922 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,926 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,931 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,935 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,940 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,945 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,951 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,956 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,961 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,965 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,970 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,975 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,980 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,985 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,990 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:44,995 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,001 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,006 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,011 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,015 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,020 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,024 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,029 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,034 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,038 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,044 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,049 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,054 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,059 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,063 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,068 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,072 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,077 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,082 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,087 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,092 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,097 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,101 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,105 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,110 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,115 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,120 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,126 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,131 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,135 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,140 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,144 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,148 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:45,155 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 12:12:51,505 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2018-07-24 12:12:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 48 proven. 255 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:12:59,290 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:12:59,290 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 9, 10] total 24 [2018-07-24 12:12:59,290 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:12:59,291 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:12:59,292 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:12:59,292 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=470, Unknown=6, NotChecked=0, Total=552 [2018-07-24 12:12:59,292 INFO L87 Difference]: Start difference. First operand 19423 states and 24676 transitions. Second operand 9 states. [2018-07-24 12:14:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:09,775 INFO L93 Difference]: Finished difference Result 57538 states and 78326 transitions. [2018-07-24 12:14:09,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:14:09,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 485 [2018-07-24 12:14:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:10,005 INFO L225 Difference]: With dead ends: 57538 [2018-07-24 12:14:10,005 INFO L226 Difference]: Without dead ends: 38429 [2018-07-24 12:14:10,142 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1967 GetRequests, 1930 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=157, Invalid=892, Unknown=7, NotChecked=0, Total=1056 [2018-07-24 12:14:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38429 states. [2018-07-24 12:14:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38429 to 36807. [2018-07-24 12:14:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36807 states. [2018-07-24 12:14:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36807 states to 36807 states and 47269 transitions. [2018-07-24 12:14:11,041 INFO L78 Accepts]: Start accepts. Automaton has 36807 states and 47269 transitions. Word has length 485 [2018-07-24 12:14:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:11,042 INFO L471 AbstractCegarLoop]: Abstraction has 36807 states and 47269 transitions. [2018-07-24 12:14:11,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:14:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 36807 states and 47269 transitions. [2018-07-24 12:14:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2018-07-24 12:14:11,072 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:11,072 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:11,072 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:14:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1447559527, now seen corresponding path program 1 times [2018-07-24 12:14:11,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:11,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:11,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:11,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:11,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-07-24 12:14:11,865 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:14:11,865 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:14:11,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:11,866 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:14:11,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:14:11,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:11,866 INFO L87 Difference]: Start difference. First operand 36807 states and 47269 transitions. Second operand 3 states. [2018-07-24 12:14:16,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:16,084 INFO L93 Difference]: Finished difference Result 76159 states and 100242 transitions. [2018-07-24 12:14:16,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:14:16,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 569 [2018-07-24 12:14:16,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:16,280 INFO L225 Difference]: With dead ends: 76159 [2018-07-24 12:14:16,280 INFO L226 Difference]: Without dead ends: 37779 [2018-07-24 12:14:16,446 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37779 states. [2018-07-24 12:14:17,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37779 to 35491. [2018-07-24 12:14:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35491 states. [2018-07-24 12:14:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35491 states to 35491 states and 44323 transitions. [2018-07-24 12:14:17,219 INFO L78 Accepts]: Start accepts. Automaton has 35491 states and 44323 transitions. Word has length 569 [2018-07-24 12:14:17,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:17,220 INFO L471 AbstractCegarLoop]: Abstraction has 35491 states and 44323 transitions. [2018-07-24 12:14:17,220 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:14:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 35491 states and 44323 transitions. [2018-07-24 12:14:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-07-24 12:14:17,246 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:17,247 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:17,247 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:14:17,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1412094173, now seen corresponding path program 1 times [2018-07-24 12:14:17,248 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:17,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:17,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-07-24 12:14:18,104 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:18,104 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:18,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:18,111 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:18,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-07-24 12:14:18,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-07-24 12:14:18,742 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:14:18,743 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-07-24 12:14:18,743 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:18,744 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:14:18,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:14:18,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:14:18,744 INFO L87 Difference]: Start difference. First operand 35491 states and 44323 transitions. Second operand 3 states. [2018-07-24 12:14:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:21,838 INFO L93 Difference]: Finished difference Result 69708 states and 87332 transitions. [2018-07-24 12:14:21,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:14:21,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 614 [2018-07-24 12:14:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:21,983 INFO L225 Difference]: With dead ends: 69708 [2018-07-24 12:14:21,984 INFO L226 Difference]: Without dead ends: 35791 [2018-07-24 12:14:22,105 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1230 GetRequests, 1228 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:14:22,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35791 states. [2018-07-24 12:14:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35791 to 35161. [2018-07-24 12:14:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35161 states. [2018-07-24 12:14:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35161 states to 35161 states and 43873 transitions. [2018-07-24 12:14:23,286 INFO L78 Accepts]: Start accepts. Automaton has 35161 states and 43873 transitions. Word has length 614 [2018-07-24 12:14:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:23,288 INFO L471 AbstractCegarLoop]: Abstraction has 35161 states and 43873 transitions. [2018-07-24 12:14:23,288 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:14:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 35161 states and 43873 transitions. [2018-07-24 12:14:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-07-24 12:14:23,303 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:23,303 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:23,304 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:14:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1281802017, now seen corresponding path program 1 times [2018-07-24 12:14:23,304 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:23,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:23,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:14:23,875 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:23,875 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:23,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:23,883 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:24,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:14:24,366 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:14:24,741 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:24,742 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:14:24,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:24,765 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:25,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:14:25,858 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:14:26,184 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:26,185 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 11 [2018-07-24 12:14:26,185 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:26,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 12:14:26,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 12:14:26,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:14:26,188 INFO L87 Difference]: Start difference. First operand 35161 states and 43873 transitions. Second operand 8 states. [2018-07-24 12:14:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:36,934 INFO L93 Difference]: Finished difference Result 86166 states and 124205 transitions. [2018-07-24 12:14:36,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:14:36,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 614 [2018-07-24 12:14:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:37,501 INFO L225 Difference]: With dead ends: 86166 [2018-07-24 12:14:37,501 INFO L226 Difference]: Without dead ends: 52579 [2018-07-24 12:14:37,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2477 GetRequests, 2456 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:14:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52579 states. [2018-07-24 12:14:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52579 to 47617. [2018-07-24 12:14:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47617 states. [2018-07-24 12:14:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47617 states to 47617 states and 63052 transitions. [2018-07-24 12:14:39,833 INFO L78 Accepts]: Start accepts. Automaton has 47617 states and 63052 transitions. Word has length 614 [2018-07-24 12:14:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:39,834 INFO L471 AbstractCegarLoop]: Abstraction has 47617 states and 63052 transitions. [2018-07-24 12:14:39,834 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 12:14:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 47617 states and 63052 transitions. [2018-07-24 12:14:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-07-24 12:14:39,851 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:39,852 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:39,852 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:14:39,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1030846105, now seen corresponding path program 1 times [2018-07-24 12:14:39,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:39,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:39,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:39,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:39,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 276 proven. 17 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-07-24 12:14:40,635 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:40,635 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:14:40,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:40,642 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:40,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 371 proven. 81 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-07-24 12:14:41,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-07-24 12:14:42,761 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:42,761 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:14:42,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:42,777 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:43,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:44,067 WARN L169 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 46 [2018-07-24 12:14:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 448 proven. 4 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-07-24 12:14:44,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-07-24 12:14:45,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:14:45,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5, 8, 5] total 24 [2018-07-24 12:14:45,372 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:14:45,373 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:14:45,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:14:45,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:14:45,374 INFO L87 Difference]: Start difference. First operand 47617 states and 63052 transitions. Second operand 15 states. Received shutdown request... [2018-07-24 12:14:50,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 12:14:50,197 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:14:50,203 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:14:50,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:14:50 BoogieIcfgContainer [2018-07-24 12:14:50,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:14:50,204 INFO L168 Benchmark]: Toolchain (without parser) took 246844.71 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 986.9 MB. Max. memory is 7.1 GB. [2018-07-24 12:14:50,205 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:14:50,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1326.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:14:50,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 243.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:14:50,210 INFO L168 Benchmark]: Boogie Preprocessor took 756.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 890.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:14:50,211 INFO L168 Benchmark]: RCFGBuilder took 5997.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 318.0 MB). Peak memory consumption was 318.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:14:50,211 INFO L168 Benchmark]: TraceAbstraction took 238514.90 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -823.9 MB). Peak memory consumption was 677.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:14:50,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1326.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 243.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 756.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 890.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5997.51 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 318.0 MB). Peak memory consumption was 318.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238514.90 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -823.9 MB). Peak memory consumption was 677.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (47617states) and interpolant automaton (currently 13 states, 15 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 34 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 238.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 153.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3101 SDtfs, 15288 SDslu, 2684 SDs, 0 SdLazy, 28889 SolverSat, 5910 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 134.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11563 GetRequests, 11406 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 58.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47617occurred in iteration=10, 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: 6.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 10009 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 71.8s InterpolantComputationTime, 10043 NumberOfCodeBlocks, 10043 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 15717 ConstructedInterpolants, 323 QuantifiedInterpolants, 46653717 SizeOfPredicates, 20 NumberOfNonLiveVariables, 8331 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 11508/12363 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label30_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-14-50-239.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label30_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-14-50-239.csv Completed graceful shutdown