java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:34:12,954 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:34:12,956 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:34:12,972 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:34:12,972 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:34:12,974 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:34:12,975 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:34:12,979 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:34:12,981 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:34:12,982 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:34:12,983 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:34:12,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:34:12,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:34:12,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:34:12,993 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:34:12,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:34:12,996 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:34:13,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:34:13,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:34:13,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:34:13,011 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:34:13,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:34:13,014 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:34:13,014 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:34:13,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:34:13,016 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:34:13,016 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:34:13,017 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:34:13,018 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:34:13,019 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:34:13,019 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:34:13,020 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:34:13,020 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:34:13,020 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:34:13,021 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:34:13,022 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:34:13,022 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:34:13,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:34:13,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:34:13,038 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:34:13,038 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:34:13,038 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:34:13,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:34:13,039 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:34:13,039 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:34:13,039 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:34:13,039 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:34:13,040 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:34:13,040 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:34:13,040 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:34:13,041 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:34:13,041 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:34:13,041 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:34:13,041 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:34:13,041 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:34:13,042 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:34:13,042 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:34:13,042 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:34:13,042 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:34:13,042 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:34:13,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:34:13,043 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:34:13,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:34:13,043 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:34:13,043 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:34:13,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:34:13,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:34:13,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:34:13,044 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:34:13,044 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:34:13,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:34:13,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:34:13,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:34:13,113 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:34:13,113 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:34:13,114 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-09-10 11:34:13,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1cec7f74/18fe3eec58714e43aba41c588e8d9057/FLAGa7d2d01ab [2018-09-10 11:34:13,801 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:34:13,802 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-09-10 11:34:13,823 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1cec7f74/18fe3eec58714e43aba41c588e8d9057/FLAGa7d2d01ab [2018-09-10 11:34:13,845 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1cec7f74/18fe3eec58714e43aba41c588e8d9057 [2018-09-10 11:34:13,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:34:13,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:34:13,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:34:13,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:34:13,877 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:34:13,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:34:13" (1/1) ... [2018-09-10 11:34:13,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5afe65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:13, skipping insertion in model container [2018-09-10 11:34:13,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:34:13" (1/1) ... [2018-09-10 11:34:14,120 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:34:14,597 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:34:14,619 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:34:14,825 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:34:14,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14 WrapperNode [2018-09-10 11:34:14,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:34:14,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:34:14,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:34:14,905 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:34:14,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:14,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:34:15,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:34:15,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:34:15,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:34:15,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... [2018-09-10 11:34:15,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:34:15,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:34:15,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:34:15,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:34:15,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:34:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:34:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:34:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:34:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:34:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:34:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:34:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:34:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:34:21,996 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:34:21,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:34:21 BoogieIcfgContainer [2018-09-10 11:34:21,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:34:21,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:34:21,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:34:22,002 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:34:22,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:34:13" (1/3) ... [2018-09-10 11:34:22,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233aee58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:34:22, skipping insertion in model container [2018-09-10 11:34:22,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:34:14" (2/3) ... [2018-09-10 11:34:22,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233aee58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:34:22, skipping insertion in model container [2018-09-10 11:34:22,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:34:21" (3/3) ... [2018-09-10 11:34:22,006 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label11_true-unreach-call.c [2018-09-10 11:34:22,018 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:34:22,029 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:34:22,086 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:34:22,087 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:34:22,087 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:34:22,087 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:34:22,088 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:34:22,088 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:34:22,088 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:34:22,088 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:34:22,088 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:34:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-10 11:34:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-10 11:34:22,128 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:34:22,130 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:34:22,131 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:34:22,137 INFO L82 PathProgramCache]: Analyzing trace with hash 586215740, now seen corresponding path program 1 times [2018-09-10 11:34:22,140 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:34:22,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:22,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:22,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:22,191 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:34:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:22,687 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:34:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:34:22,796 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:34:22,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:34:22,797 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:34:22,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:34:22,819 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:34:22,820 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:34:22,823 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-09-10 11:34:26,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:34:26,301 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-09-10 11:34:26,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:34:26,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-09-10 11:34:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:34:26,330 INFO L225 Difference]: With dead ends: 782 [2018-09-10 11:34:26,330 INFO L226 Difference]: Without dead ends: 487 [2018-09-10 11:34:26,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:34:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-10 11:34:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-09-10 11:34:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-09-10 11:34:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-09-10 11:34:26,442 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 68 [2018-09-10 11:34:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:34:26,443 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-09-10 11:34:26,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:34:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-09-10 11:34:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-10 11:34:26,453 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:34:26,453 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:34:26,454 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:34:26,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1561490343, now seen corresponding path program 1 times [2018-09-10 11:34:26,454 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:34:26,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:26,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:26,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:26,456 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:34:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:34:27,019 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:34:27,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:34:27,019 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:34:27,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:34:27,022 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:34:27,022 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:34:27,022 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-09-10 11:34:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:34:35,278 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-09-10 11:34:35,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:34:35,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2018-09-10 11:34:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:34:35,297 INFO L225 Difference]: With dead ends: 1760 [2018-09-10 11:34:35,297 INFO L226 Difference]: Without dead ends: 1284 [2018-09-10 11:34:35,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:34:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-09-10 11:34:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-09-10 11:34:35,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-09-10 11:34:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-09-10 11:34:35,398 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 143 [2018-09-10 11:34:35,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:34:35,399 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-09-10 11:34:35,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:34:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-09-10 11:34:35,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-10 11:34:35,407 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:34:35,407 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:34:35,408 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:34:35,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1636025592, now seen corresponding path program 1 times [2018-09-10 11:34:35,408 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:34:35,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:35,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:35,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:35,410 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:34:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 122 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:34:35,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:34:35,685 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:34:35,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:35,697 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:34:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:35,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:34:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:34:36,206 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:34:36,521 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:34:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 122 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:34:36,852 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:34:36,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:34:36,853 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:34:36,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:34:36,854 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:34:36,854 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:34:36,854 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 5 states. [2018-09-10 11:34:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:34:43,411 INFO L93 Difference]: Finished difference Result 3395 states and 5619 transitions. [2018-09-10 11:34:43,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:34:43,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-09-10 11:34:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:34:43,439 INFO L225 Difference]: With dead ends: 3395 [2018-09-10 11:34:43,439 INFO L226 Difference]: Without dead ends: 2364 [2018-09-10 11:34:43,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 427 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:34:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2018-09-10 11:34:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2323. [2018-09-10 11:34:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-09-10 11:34:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3627 transitions. [2018-09-10 11:34:43,527 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3627 transitions. Word has length 216 [2018-09-10 11:34:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:34:43,528 INFO L480 AbstractCegarLoop]: Abstraction has 2323 states and 3627 transitions. [2018-09-10 11:34:43,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:34:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3627 transitions. [2018-09-10 11:34:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-10 11:34:43,539 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:34:43,540 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:34:43,540 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:34:43,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1687745886, now seen corresponding path program 1 times [2018-09-10 11:34:43,540 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:34:43,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:43,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:43,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:43,542 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:34:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:34:43,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:34:43,932 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:34:43,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:43,941 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:34:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:44,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:34:50,516 WARN L175 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 118 DAG size of output: 31 [2018-09-10 11:34:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:34:50,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:34:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:34:51,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:34:51,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-10 11:34:51,330 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:34:51,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:34:51,331 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:34:51,331 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=46, Unknown=2, NotChecked=0, Total=72 [2018-09-10 11:34:51,332 INFO L87 Difference]: Start difference. First operand 2323 states and 3627 transitions. Second operand 3 states. [2018-09-10 11:34:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:34:53,028 INFO L93 Difference]: Finished difference Result 6027 states and 9690 transitions. [2018-09-10 11:34:53,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:34:53,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-09-10 11:34:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:34:53,056 INFO L225 Difference]: With dead ends: 6027 [2018-09-10 11:34:53,057 INFO L226 Difference]: Without dead ends: 3710 [2018-09-10 11:34:53,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 519 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=24, Invalid=46, Unknown=2, NotChecked=0, Total=72 [2018-09-10 11:34:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2018-09-10 11:34:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3705. [2018-09-10 11:34:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3705 states. [2018-09-10 11:34:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5492 transitions. [2018-09-10 11:34:53,175 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5492 transitions. Word has length 260 [2018-09-10 11:34:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:34:53,176 INFO L480 AbstractCegarLoop]: Abstraction has 3705 states and 5492 transitions. [2018-09-10 11:34:53,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:34:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5492 transitions. [2018-09-10 11:34:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-10 11:34:53,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:34:53,194 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-09-10 11:34:53,194 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:34:53,194 INFO L82 PathProgramCache]: Analyzing trace with hash -307629149, now seen corresponding path program 1 times [2018-09-10 11:34:53,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:34:53,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:53,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:53,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:53,196 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:34:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-10 11:34:53,494 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:34:53,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:34:53,494 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:34:53,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:34:53,495 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:34:53,495 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:34:53,496 INFO L87 Difference]: Start difference. First operand 3705 states and 5492 transitions. Second operand 4 states. [2018-09-10 11:34:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:34:56,562 INFO L93 Difference]: Finished difference Result 12062 states and 18979 transitions. [2018-09-10 11:34:56,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:34:56,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2018-09-10 11:34:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:34:56,609 INFO L225 Difference]: With dead ends: 12062 [2018-09-10 11:34:56,610 INFO L226 Difference]: Without dead ends: 8363 [2018-09-10 11:34:56,645 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:34:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2018-09-10 11:34:56,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 8157. [2018-09-10 11:34:56,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8157 states. [2018-09-10 11:34:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8157 states to 8157 states and 11707 transitions. [2018-09-10 11:34:56,876 INFO L78 Accepts]: Start accepts. Automaton has 8157 states and 11707 transitions. Word has length 286 [2018-09-10 11:34:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:34:56,877 INFO L480 AbstractCegarLoop]: Abstraction has 8157 states and 11707 transitions. [2018-09-10 11:34:56,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:34:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8157 states and 11707 transitions. [2018-09-10 11:34:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-10 11:34:56,911 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:34:56,912 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:34:56,912 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:34:56,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1450435608, now seen corresponding path program 1 times [2018-09-10 11:34:56,913 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:34:56,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:56,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:56,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:34:56,914 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:34:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 11:34:57,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:34:57,499 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:34:57,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:34:57,507 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:34:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:34:57,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:34:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-10 11:34:57,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:34:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-10 11:34:58,187 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:34:58,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 10 [2018-09-10 11:34:58,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:34:58,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:34:58,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:34:58,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:34:58,192 INFO L87 Difference]: Start difference. First operand 8157 states and 11707 transitions. Second operand 5 states. [2018-09-10 11:35:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:00,994 INFO L93 Difference]: Finished difference Result 22041 states and 32635 transitions. [2018-09-10 11:35:01,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:35:01,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2018-09-10 11:35:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:01,070 INFO L225 Difference]: With dead ends: 22041 [2018-09-10 11:35:01,070 INFO L226 Difference]: Without dead ends: 13890 [2018-09-10 11:35:01,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 574 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:35:01,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13890 states. [2018-09-10 11:35:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13890 to 13876. [2018-09-10 11:35:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13876 states. [2018-09-10 11:35:01,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13876 states to 13876 states and 19404 transitions. [2018-09-10 11:35:01,483 INFO L78 Accepts]: Start accepts. Automaton has 13876 states and 19404 transitions. Word has length 288 [2018-09-10 11:35:01,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:01,483 INFO L480 AbstractCegarLoop]: Abstraction has 13876 states and 19404 transitions. [2018-09-10 11:35:01,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:35:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13876 states and 19404 transitions. [2018-09-10 11:35:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-10 11:35:01,546 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:01,547 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:35:01,547 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1146156618, now seen corresponding path program 1 times [2018-09-10 11:35:01,547 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:01,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:01,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:01,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:01,549 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:02,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:02,160 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:35:02,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:02,176 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:02,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 11:35:02,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 127 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:03,134 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:03,134 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:35:03,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:03,150 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:03,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:03,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:04,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:35:04,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 17 [2018-09-10 11:35:04,420 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:35:04,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 11:35:04,420 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 11:35:04,421 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:35:04,421 INFO L87 Difference]: Start difference. First operand 13876 states and 19404 transitions. Second operand 11 states. [2018-09-10 11:35:24,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:24,154 INFO L93 Difference]: Finished difference Result 50435 states and 132599 transitions. [2018-09-10 11:35:24,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-10 11:35:24,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 303 [2018-09-10 11:35:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:24,697 INFO L225 Difference]: With dead ends: 50435 [2018-09-10 11:35:24,698 INFO L226 Difference]: Without dead ends: 36057 [2018-09-10 11:35:25,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1240 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2710 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1529, Invalid=6481, Unknown=0, NotChecked=0, Total=8010 [2018-09-10 11:35:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36057 states. [2018-09-10 11:35:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36057 to 35191. [2018-09-10 11:35:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35191 states. [2018-09-10 11:35:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35191 states to 35191 states and 68212 transitions. [2018-09-10 11:35:27,950 INFO L78 Accepts]: Start accepts. Automaton has 35191 states and 68212 transitions. Word has length 303 [2018-09-10 11:35:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:27,951 INFO L480 AbstractCegarLoop]: Abstraction has 35191 states and 68212 transitions. [2018-09-10 11:35:27,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 11:35:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 35191 states and 68212 transitions. [2018-09-10 11:35:28,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-10 11:35:28,108 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:28,109 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:35:28,109 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash 470948548, now seen corresponding path program 1 times [2018-09-10 11:35:28,109 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:28,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:28,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:28,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:28,111 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:35:29,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:29,294 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:35:29,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:29,308 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:29,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:35:29,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:35:29,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:29,805 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:35:29,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:29,820 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:30,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 257 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:35:30,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:35:30,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:35:30,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 9 [2018-09-10 11:35:30,458 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:35:30,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:35:30,459 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:35:30,459 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:35:30,459 INFO L87 Difference]: Start difference. First operand 35191 states and 68212 transitions. Second operand 7 states. [2018-09-10 11:35:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:34,187 INFO L93 Difference]: Finished difference Result 74420 states and 168855 transitions. [2018-09-10 11:35:34,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:35:34,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2018-09-10 11:35:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:34,777 INFO L225 Difference]: With dead ends: 74420 [2018-09-10 11:35:34,777 INFO L226 Difference]: Without dead ends: 38127 [2018-09-10 11:35:35,231 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1456 GetRequests, 1442 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:35:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38127 states. [2018-09-10 11:35:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38127 to 37329. [2018-09-10 11:35:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37329 states. [2018-09-10 11:35:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37329 states to 37329 states and 67935 transitions. [2018-09-10 11:35:38,483 INFO L78 Accepts]: Start accepts. Automaton has 37329 states and 67935 transitions. Word has length 362 [2018-09-10 11:35:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:38,484 INFO L480 AbstractCegarLoop]: Abstraction has 37329 states and 67935 transitions. [2018-09-10 11:35:38,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:35:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 37329 states and 67935 transitions. [2018-09-10 11:35:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-10 11:35:38,695 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:38,696 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:35:38,696 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1100022454, now seen corresponding path program 1 times [2018-09-10 11:35:38,696 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:38,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:38,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:38,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:38,698 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-10 11:35:39,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:39,500 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:35:39,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:39,514 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:39,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-10 11:35:40,151 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:40,401 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:35:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-10 11:35:40,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:35:40,671 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:35:40,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:40,688 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:35:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:41,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:35:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-10 11:35:41,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:35:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-10 11:35:41,557 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:35:41,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:35:41,557 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:35:41,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:35:41,559 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:35:41,559 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:35:41,559 INFO L87 Difference]: Start difference. First operand 37329 states and 67935 transitions. Second operand 9 states. [2018-09-10 11:35:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:35:49,554 INFO L93 Difference]: Finished difference Result 78750 states and 200299 transitions. [2018-09-10 11:35:49,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:35:49,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 411 [2018-09-10 11:35:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:35:50,461 INFO L225 Difference]: With dead ends: 78750 [2018-09-10 11:35:50,461 INFO L226 Difference]: Without dead ends: 41427 [2018-09-10 11:35:51,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1660 GetRequests, 1639 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:35:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41427 states. [2018-09-10 11:35:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41427 to 40913. [2018-09-10 11:35:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40913 states. [2018-09-10 11:35:55,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40913 states to 40913 states and 93312 transitions. [2018-09-10 11:35:55,109 INFO L78 Accepts]: Start accepts. Automaton has 40913 states and 93312 transitions. Word has length 411 [2018-09-10 11:35:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:35:55,110 INFO L480 AbstractCegarLoop]: Abstraction has 40913 states and 93312 transitions. [2018-09-10 11:35:55,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:35:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 40913 states and 93312 transitions. [2018-09-10 11:35:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-09-10 11:35:55,291 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:35:55,291 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:35:55,292 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:35:55,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1579133404, now seen corresponding path program 1 times [2018-09-10 11:35:55,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:35:55,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:55,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:35:55,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:35:55,293 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:35:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:35:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-10 11:35:55,642 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:35:55,643 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:35:55,643 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:35:55,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:35:55,644 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:35:55,644 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:35:55,644 INFO L87 Difference]: Start difference. First operand 40913 states and 93312 transitions. Second operand 3 states. [2018-09-10 11:36:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:36:01,426 INFO L93 Difference]: Finished difference Result 80076 states and 184242 transitions. [2018-09-10 11:36:01,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:36:01,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 420 [2018-09-10 11:36:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:36:01,979 INFO L225 Difference]: With dead ends: 80076 [2018-09-10 11:36:01,979 INFO L226 Difference]: Without dead ends: 39549 [2018-09-10 11:36:02,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:36:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39549 states. [2018-09-10 11:36:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39549 to 39493. [2018-09-10 11:36:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39493 states. [2018-09-10 11:36:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39493 states to 39493 states and 82203 transitions. [2018-09-10 11:36:06,339 INFO L78 Accepts]: Start accepts. Automaton has 39493 states and 82203 transitions. Word has length 420 [2018-09-10 11:36:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:36:06,340 INFO L480 AbstractCegarLoop]: Abstraction has 39493 states and 82203 transitions. [2018-09-10 11:36:06,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:36:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 39493 states and 82203 transitions. [2018-09-10 11:36:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-09-10 11:36:06,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:36:06,477 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:36:06,477 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:36:06,478 INFO L82 PathProgramCache]: Analyzing trace with hash -788927721, now seen corresponding path program 1 times [2018-09-10 11:36:06,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:36:06,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:36:06,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:36:06,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:36:06,479 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:36:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:36:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 189 proven. 217 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:36:06,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:36:06,963 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:36:06,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:36:06,971 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:36:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:36:07,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:36:10,303 WARN L175 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-09-10 11:36:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 343 proven. 107 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:36:10,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:36:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 294 proven. 107 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-10 11:36:10,755 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:36:10,755 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:36:10,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:36:10,771 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:36:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:36:11,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:36:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 343 proven. 107 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:36:11,994 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:36:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 294 proven. 107 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-10 11:36:12,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:36:12,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5, 8, 5] total 15 [2018-09-10 11:36:12,779 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:36:12,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 11:36:12,780 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 11:36:12,781 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=150, Unknown=3, NotChecked=0, Total=210 [2018-09-10 11:36:12,781 INFO L87 Difference]: Start difference. First operand 39493 states and 82203 transitions. Second operand 10 states. [2018-09-10 11:36:13,319 WARN L175 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-10 11:36:15,982 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-10 11:37:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:37:59,330 INFO L93 Difference]: Finished difference Result 106614 states and 349361 transitions. [2018-09-10 11:37:59,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-10 11:37:59,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 423 [2018-09-10 11:37:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:38:00,712 INFO L225 Difference]: With dead ends: 106614 [2018-09-10 11:38:00,713 INFO L226 Difference]: Without dead ends: 67507 Received shutdown request... [2018-09-10 11:38:06,773 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1732 GetRequests, 1695 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=238, Invalid=743, Unknown=11, NotChecked=0, Total=992 [2018-09-10 11:38:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67507 states. [2018-09-10 11:38:06,799 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:38:06,803 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:38:06,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:38:06 BoogieIcfgContainer [2018-09-10 11:38:06,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:38:06,804 INFO L168 Benchmark]: Toolchain (without parser) took 232944.50 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 4.1 GB in the end (delta: -2.7 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-10 11:38:06,805 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:38:06,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1036.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-09-10 11:38:06,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:38:06,807 INFO L168 Benchmark]: Boogie Preprocessor took 370.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -923.7 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:38:06,808 INFO L168 Benchmark]: RCFGBuilder took 6534.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 213.3 MB). Peak memory consumption was 213.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:38:06,809 INFO L168 Benchmark]: TraceAbstraction took 224805.28 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 4.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:38:06,814 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 1036.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 370.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -923.7 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6534.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 213.3 MB). Peak memory consumption was 213.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224805.28 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 4.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 224.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 183.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2537 SDtfs, 12345 SDslu, 2749 SDs, 0 SdLazy, 25720 SolverSat, 6009 SolverUnsat, 67 SolverUnknown, 0 SolverNotchecked, 132.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7766 GetRequests, 7548 SyntacticMatches, 33 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3065 ImplicationChecksByTransitivity, 26.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40913occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 2752 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 6942 NumberOfCodeBlocks, 6942 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 10671 ConstructedInterpolants, 5 QuantifiedInterpolants, 9634508 SizeOfPredicates, 14 NumberOfNonLiveVariables, 6290 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 9475/10898 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-38-06-831.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-38-06-831.csv Completed graceful shutdown