java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:08:05,763 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:08:05,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:08:05,777 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:08:05,778 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:08:05,779 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:08:05,780 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:08:05,782 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:08:05,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:08:05,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:08:05,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:08:05,790 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:08:05,791 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:08:05,792 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:08:05,796 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:08:05,797 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:08:05,804 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:08:05,809 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:08:05,811 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:08:05,816 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:08:05,817 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:08:05,820 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:08:05,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 14:08:05,837 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:08:05,837 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:08:05,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:08:05,840 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:08:05,841 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:08:05,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:08:05,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:08:05,868 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:08:05,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:08:05,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:08:05,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:08:05,869 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:08:05,869 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:08:05,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:08:05,870 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:08:05,870 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:08:05,870 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:08:05,871 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:08:05,871 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:08:05,871 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:08:05,871 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:08:05,871 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:08:05,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:08:05,872 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:08:05,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:08:05,872 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:08:05,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:08:05,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:08:05,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:08:05,873 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:08:05,873 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:08:05,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:08:05,874 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:08:05,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:08:05,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:08:05,874 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:08:05,875 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:08:05,875 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:08:05,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:08:05,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:08:05,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:08:05,958 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:08:05,959 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:08:05,960 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-07-24 14:08:06,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a7c5143a/83269e6a3ea9429ea4080fc882dde08c/FLAGf377218bf [2018-07-24 14:08:06,773 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:08:06,774 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-07-24 14:08:06,804 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a7c5143a/83269e6a3ea9429ea4080fc882dde08c/FLAGf377218bf [2018-07-24 14:08:06,824 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a7c5143a/83269e6a3ea9429ea4080fc882dde08c [2018-07-24 14:08:06,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:08:06,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:08:06,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:08:06,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:08:06,848 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:08:06,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:08:06" (1/1) ... [2018-07-24 14:08:06,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4f1318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:06, skipping insertion in model container [2018-07-24 14:08:06,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:08:06" (1/1) ... [2018-07-24 14:08:07,207 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:08:08,310 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:08:08,327 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:08:08,927 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:08:09,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09 WrapperNode [2018-07-24 14:08:09,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:08:09,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:08:09,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:08:09,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:08:09,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:09,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:09,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:08:09,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:08:09,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:08:09,399 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:08:09,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:09,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:10,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:10,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:10,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:10,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:10,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... [2018-07-24 14:08:10,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:08:10,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:08:10,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:08:10,394 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:08:10,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:08:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:08:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:08:10,471 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 [2018-07-24 14:08:10,471 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 [2018-07-24 14:08:10,471 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_output3 [2018-07-24 14:08:10,471 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_output3 [2018-07-24 14:08:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:08:10,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:08:10,472 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_output4 [2018-07-24 14:08:10,472 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_output4 [2018-07-24 14:08:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:08:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:08:10,473 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_output2 [2018-07-24 14:08:10,473 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_output2 [2018-07-24 14:08:22,979 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:08:22,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:08:22 BoogieIcfgContainer [2018-07-24 14:08:22,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:08:22,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:08:22,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:08:22,984 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:08:22,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:08:06" (1/3) ... [2018-07-24 14:08:22,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d31c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:08:22, skipping insertion in model container [2018-07-24 14:08:22,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:09" (2/3) ... [2018-07-24 14:08:22,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d31c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:08:22, skipping insertion in model container [2018-07-24 14:08:22,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:08:22" (3/3) ... [2018-07-24 14:08:22,987 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16_true-unreach-call.c [2018-07-24 14:08:22,997 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:08:23,006 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:08:23,065 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:08:23,066 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:08:23,066 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:08:23,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:08:23,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:08:23,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:08:23,067 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:08:23,067 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:08:23,067 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:08:23,110 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:08:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-07-24 14:08:23,121 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:23,122 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:23,123 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1560691060, now seen corresponding path program 1 times [2018-07-24 14:08:23,130 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:23,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:23,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:23,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:23,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:23,679 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:08:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:08:23,721 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:23,721 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:08:23,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:23,728 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:08:23,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:08:23,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:08:23,746 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:08:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:31,221 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:08:31,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:08:31,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-07-24 14:08:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:31,281 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:08:31,281 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:08:31,295 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:08:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:08:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:08:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:08:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-07-24 14:08:31,478 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 72 [2018-07-24 14:08:31,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:31,479 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-07-24 14:08:31,479 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:08:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-07-24 14:08:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-24 14:08:31,499 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:31,500 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:08:31,500 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1107747922, now seen corresponding path program 1 times [2018-07-24 14:08:31,501 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:31,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:31,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:31,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:31,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:08:31,868 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:31,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:08:31,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:31,870 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:08:31,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:08:31,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:08:31,871 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-07-24 14:08:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:45,803 INFO L93 Difference]: Finished difference Result 4793 states and 8578 transitions. [2018-07-24 14:08:45,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:08:45,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-07-24 14:08:45,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:45,826 INFO L225 Difference]: With dead ends: 4793 [2018-07-24 14:08:45,826 INFO L226 Difference]: Without dead ends: 3195 [2018-07-24 14:08:45,833 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:08:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-07-24 14:08:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3170. [2018-07-24 14:08:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2018-07-24 14:08:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4855 transitions. [2018-07-24 14:08:45,926 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4855 transitions. Word has length 146 [2018-07-24 14:08:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:45,926 INFO L471 AbstractCegarLoop]: Abstraction has 3170 states and 4855 transitions. [2018-07-24 14:08:45,927 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:08:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4855 transitions. [2018-07-24 14:08:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-24 14:08:45,930 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:45,930 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:08:45,930 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash -616080879, now seen corresponding path program 1 times [2018-07-24 14:08:45,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:45,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:45,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:45,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:45,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:08:46,335 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:46,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:08:46,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:46,335 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:08:46,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:08:46,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:08:46,336 INFO L87 Difference]: Start difference. First operand 3170 states and 4855 transitions. Second operand 6 states. [2018-07-24 14:08:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:08:59,277 INFO L93 Difference]: Finished difference Result 11143 states and 17389 transitions. [2018-07-24 14:08:59,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:08:59,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-07-24 14:08:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:08:59,322 INFO L225 Difference]: With dead ends: 11143 [2018-07-24 14:08:59,323 INFO L226 Difference]: Without dead ends: 7979 [2018-07-24 14:08:59,340 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:08:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2018-07-24 14:08:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7906. [2018-07-24 14:08:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2018-07-24 14:08:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11742 transitions. [2018-07-24 14:08:59,566 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11742 transitions. Word has length 151 [2018-07-24 14:08:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:08:59,567 INFO L471 AbstractCegarLoop]: Abstraction has 7906 states and 11742 transitions. [2018-07-24 14:08:59,567 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:08:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11742 transitions. [2018-07-24 14:08:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-24 14:08:59,572 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:08:59,572 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:08:59,572 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:08:59,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2050760374, now seen corresponding path program 1 times [2018-07-24 14:08:59,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:08:59,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:59,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:08:59,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:08:59,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:08:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:08:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:08:59,739 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:08:59,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:08:59,740 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:08:59,740 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:08:59,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:08:59,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:08:59,741 INFO L87 Difference]: Start difference. First operand 7906 states and 11742 transitions. Second operand 5 states. [2018-07-24 14:09:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:18,731 INFO L93 Difference]: Finished difference Result 28904 states and 43932 transitions. [2018-07-24 14:09:18,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:09:18,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-07-24 14:09:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:18,814 INFO L225 Difference]: With dead ends: 28904 [2018-07-24 14:09:18,815 INFO L226 Difference]: Without dead ends: 21004 [2018-07-24 14:09:18,855 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:09:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21004 states. [2018-07-24 14:09:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21004 to 20768. [2018-07-24 14:09:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20768 states. [2018-07-24 14:09:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20768 states to 20768 states and 28537 transitions. [2018-07-24 14:09:19,355 INFO L78 Accepts]: Start accepts. Automaton has 20768 states and 28537 transitions. Word has length 176 [2018-07-24 14:09:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:19,355 INFO L471 AbstractCegarLoop]: Abstraction has 20768 states and 28537 transitions. [2018-07-24 14:09:19,356 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:09:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 20768 states and 28537 transitions. [2018-07-24 14:09:19,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-24 14:09:19,368 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:19,368 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:19,368 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:19,369 INFO L82 PathProgramCache]: Analyzing trace with hash -395147701, now seen corresponding path program 1 times [2018-07-24 14:09:19,369 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:19,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:19,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:19,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:19,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:09:19,888 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:19,888 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:09:19,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:19,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:09:19,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:09:19,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:09:19,891 INFO L87 Difference]: Start difference. First operand 20768 states and 28537 transitions. Second operand 5 states. [2018-07-24 14:09:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:31,222 INFO L93 Difference]: Finished difference Result 63397 states and 90945 transitions. [2018-07-24 14:09:31,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:09:31,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-07-24 14:09:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:31,347 INFO L225 Difference]: With dead ends: 63397 [2018-07-24 14:09:31,348 INFO L226 Difference]: Without dead ends: 42635 [2018-07-24 14:09:31,409 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:09:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42635 states. [2018-07-24 14:09:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42635 to 42223. [2018-07-24 14:09:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42223 states. [2018-07-24 14:09:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42223 states to 42223 states and 56536 transitions. [2018-07-24 14:09:32,310 INFO L78 Accepts]: Start accepts. Automaton has 42223 states and 56536 transitions. Word has length 229 [2018-07-24 14:09:32,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:32,311 INFO L471 AbstractCegarLoop]: Abstraction has 42223 states and 56536 transitions. [2018-07-24 14:09:32,311 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:09:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 42223 states and 56536 transitions. [2018-07-24 14:09:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-07-24 14:09:32,329 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:32,329 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:09:32,330 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -202266377, now seen corresponding path program 1 times [2018-07-24 14:09:32,330 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:32,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:32,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:32,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:32,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:32,615 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:09:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 130 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:09:33,008 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:33,009 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:33,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:33,025 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:33,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-07-24 14:09:33,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:33,928 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:09:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 130 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:09:34,758 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:09:34,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:09:34,758 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:34,759 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:09:34,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:09:34,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:09:34,761 INFO L87 Difference]: Start difference. First operand 42223 states and 56536 transitions. Second operand 5 states. [2018-07-24 14:09:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:47,856 INFO L93 Difference]: Finished difference Result 109818 states and 156270 transitions. [2018-07-24 14:09:47,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:09:47,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-07-24 14:09:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:48,172 INFO L225 Difference]: With dead ends: 109818 [2018-07-24 14:09:48,173 INFO L226 Difference]: Without dead ends: 67601 [2018-07-24 14:09:48,275 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 528 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:09:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67601 states. [2018-07-24 14:09:50,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67601 to 67222. [2018-07-24 14:09:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67222 states. [2018-07-24 14:09:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67222 states to 67222 states and 92180 transitions. [2018-07-24 14:09:50,696 INFO L78 Accepts]: Start accepts. Automaton has 67222 states and 92180 transitions. Word has length 267 [2018-07-24 14:09:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:50,696 INFO L471 AbstractCegarLoop]: Abstraction has 67222 states and 92180 transitions. [2018-07-24 14:09:50,696 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:09:50,696 INFO L276 IsEmpty]: Start isEmpty. Operand 67222 states and 92180 transitions. [2018-07-24 14:09:50,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-24 14:09:50,712 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:50,713 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:50,713 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:09:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1399232947, now seen corresponding path program 1 times [2018-07-24 14:09:50,714 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:50,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:50,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:50,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:50,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:51,334 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:51,334 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:09:51,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:51,351 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:51,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:51,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:52,099 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:09:52,099 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:09:52,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:52,117 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:09:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:52,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:09:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:52,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:09:52,659 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:09:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:53,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:09:53,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:09:53,042 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:09:53,043 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:09:53,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:09:53,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:09:53,043 INFO L87 Difference]: Start difference. First operand 67222 states and 92180 transitions. Second operand 9 states. [2018-07-24 14:10:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:14,835 INFO L93 Difference]: Finished difference Result 237840 states and 437643 transitions. [2018-07-24 14:10:14,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:10:14,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 273 [2018-07-24 14:10:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:15,623 INFO L225 Difference]: With dead ends: 237840 [2018-07-24 14:10:15,624 INFO L226 Difference]: Without dead ends: 140227 [2018-07-24 14:10:16,001 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 1092 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:10:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140227 states. [2018-07-24 14:10:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140227 to 135242. [2018-07-24 14:10:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135242 states. [2018-07-24 14:10:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135242 states to 135242 states and 193365 transitions. [2018-07-24 14:10:20,821 INFO L78 Accepts]: Start accepts. Automaton has 135242 states and 193365 transitions. Word has length 273 [2018-07-24 14:10:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:20,821 INFO L471 AbstractCegarLoop]: Abstraction has 135242 states and 193365 transitions. [2018-07-24 14:10:20,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:10:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 135242 states and 193365 transitions. [2018-07-24 14:10:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-07-24 14:10:20,859 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:20,859 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:10:20,860 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:10:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1092670132, now seen corresponding path program 1 times [2018-07-24 14:10:20,860 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:20,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:20,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:20,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:20,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-24 14:10:21,210 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:21,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:10:21,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:21,211 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:10:21,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:10:21,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:10:21,211 INFO L87 Difference]: Start difference. First operand 135242 states and 193365 transitions. Second operand 4 states. [2018-07-24 14:10:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:32,817 INFO L93 Difference]: Finished difference Result 277055 states and 411815 transitions. [2018-07-24 14:10:32,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:10:32,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2018-07-24 14:10:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:33,419 INFO L225 Difference]: With dead ends: 277055 [2018-07-24 14:10:33,419 INFO L226 Difference]: Without dead ends: 164821 [2018-07-24 14:10:33,744 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:10:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164821 states. [2018-07-24 14:10:37,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164821 to 157063. [2018-07-24 14:10:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157063 states. [2018-07-24 14:10:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157063 states to 157063 states and 217375 transitions. [2018-07-24 14:10:38,027 INFO L78 Accepts]: Start accepts. Automaton has 157063 states and 217375 transitions. Word has length 338 [2018-07-24 14:10:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:38,028 INFO L471 AbstractCegarLoop]: Abstraction has 157063 states and 217375 transitions. [2018-07-24 14:10:38,028 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:10:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 157063 states and 217375 transitions. [2018-07-24 14:10:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-24 14:10:38,083 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:38,084 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:10:38,084 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:10:38,084 INFO L82 PathProgramCache]: Analyzing trace with hash 893725867, now seen corresponding path program 1 times [2018-07-24 14:10:38,085 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:38,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:38,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:38,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:38,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:38,375 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:10:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:40,249 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:40,249 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:10:40,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:40,258 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:40,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-07-24 14:10:40,648 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 130 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:40,870 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:10:40,870 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:10:40,870 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:40,871 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:40,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:40,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:10:40,872 INFO L87 Difference]: Start difference. First operand 157063 states and 217375 transitions. Second operand 5 states. [2018-07-24 14:10:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:52,046 INFO L93 Difference]: Finished difference Result 299448 states and 437594 transitions. [2018-07-24 14:10:52,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:10:52,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2018-07-24 14:10:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:52,508 INFO L225 Difference]: With dead ends: 299448 [2018-07-24 14:10:52,508 INFO L226 Difference]: Without dead ends: 142411 [2018-07-24 14:10:58,620 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 776 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:10:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142411 states. [2018-07-24 14:11:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142411 to 140651. [2018-07-24 14:11:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140651 states. [2018-07-24 14:11:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140651 states to 140651 states and 178855 transitions. [2018-07-24 14:11:01,011 INFO L78 Accepts]: Start accepts. Automaton has 140651 states and 178855 transitions. Word has length 391 [2018-07-24 14:11:01,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:01,012 INFO L471 AbstractCegarLoop]: Abstraction has 140651 states and 178855 transitions. [2018-07-24 14:11:01,012 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:11:01,012 INFO L276 IsEmpty]: Start isEmpty. Operand 140651 states and 178855 transitions. [2018-07-24 14:11:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-24 14:11:01,050 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:01,051 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:11:01,051 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:11:01,051 INFO L82 PathProgramCache]: Analyzing trace with hash 67085382, now seen corresponding path program 1 times [2018-07-24 14:11:01,051 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:01,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:01,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:01,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:01,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-07-24 14:11:01,405 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:01,405 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:11:01,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:01,406 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:11:01,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:11:01,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:11:01,407 INFO L87 Difference]: Start difference. First operand 140651 states and 178855 transitions. Second operand 3 states. [2018-07-24 14:11:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:09,537 INFO L93 Difference]: Finished difference Result 302675 states and 393409 transitions. [2018-07-24 14:11:09,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:11:09,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 460 [2018-07-24 14:11:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:10,058 INFO L225 Difference]: With dead ends: 302675 [2018-07-24 14:11:10,058 INFO L226 Difference]: Without dead ends: 162798 [2018-07-24 14:11:10,339 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:11:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162798 states. [2018-07-24 14:11:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162798 to 158133. [2018-07-24 14:11:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158133 states. [2018-07-24 14:11:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158133 states to 158133 states and 198940 transitions. [2018-07-24 14:11:14,285 INFO L78 Accepts]: Start accepts. Automaton has 158133 states and 198940 transitions. Word has length 460 [2018-07-24 14:11:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:14,286 INFO L471 AbstractCegarLoop]: Abstraction has 158133 states and 198940 transitions. [2018-07-24 14:11:14,286 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:11:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 158133 states and 198940 transitions. [2018-07-24 14:11:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2018-07-24 14:11:14,315 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:14,315 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:11:14,315 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:11:14,316 INFO L82 PathProgramCache]: Analyzing trace with hash 966551221, now seen corresponding path program 1 times [2018-07-24 14:11:14,316 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:14,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:14,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:11:14,882 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:14,882 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:11:14,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:14,892 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:15,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:11:15,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:11:15,961 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:15,962 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:11:15,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:15,979 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:16,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:11:16,574 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:11:16,828 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:11:16,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:11:16,829 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:11:16,830 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:11:16,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:11:16,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:11:16,831 INFO L87 Difference]: Start difference. First operand 158133 states and 198940 transitions. Second operand 9 states. [2018-07-24 14:11:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:35,909 INFO L93 Difference]: Finished difference Result 346061 states and 477196 transitions. [2018-07-24 14:11:35,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 14:11:35,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 511 [2018-07-24 14:11:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:36,729 INFO L225 Difference]: With dead ends: 346061 [2018-07-24 14:11:36,729 INFO L226 Difference]: Without dead ends: 179344 [2018-07-24 14:11:37,002 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2062 GetRequests, 2040 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:11:37,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179344 states. [2018-07-24 14:11:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179344 to 171120. [2018-07-24 14:11:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171120 states. [2018-07-24 14:11:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171120 states to 171120 states and 215065 transitions. [2018-07-24 14:11:41,397 INFO L78 Accepts]: Start accepts. Automaton has 171120 states and 215065 transitions. Word has length 511 [2018-07-24 14:11:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:41,398 INFO L471 AbstractCegarLoop]: Abstraction has 171120 states and 215065 transitions. [2018-07-24 14:11:41,398 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:11:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 171120 states and 215065 transitions. [2018-07-24 14:11:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-07-24 14:11:41,474 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:41,474 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-07-24 14:11:41,475 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:11:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1206173595, now seen corresponding path program 1 times [2018-07-24 14:11:41,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:41,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:41,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:41,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:41,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-24 14:11:42,161 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:42,161 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:11:42,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:42,165 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:11:42,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:11:42,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:11:42,166 INFO L87 Difference]: Start difference. First operand 171120 states and 215065 transitions. Second operand 4 states. Received shutdown request... [2018-07-24 14:11:47,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:11:47,851 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:11:47,858 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:11:47,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:11:47 BoogieIcfgContainer [2018-07-24 14:11:47,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:11:47,859 INFO L168 Benchmark]: Toolchain (without parser) took 221020.42 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -861.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:11:47,860 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:11:47,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2319.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:47,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 238.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:47,862 INFO L168 Benchmark]: Boogie Preprocessor took 993.96 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 932.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:47,863 INFO L168 Benchmark]: RCFGBuilder took 12586.41 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 146.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -128.8 MB). Peak memory consumption was 731.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:11:47,864 INFO L168 Benchmark]: TraceAbstraction took 204877.93 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 175.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:11:47,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2319.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 238.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 993.96 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 932.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12586.41 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 146.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -128.8 MB). Peak memory consumption was 731.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204877.93 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 175.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (171120states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (47407 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 204.8s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 166.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3709 SDtfs, 35486 SDslu, 2124 SDs, 0 SdLazy, 73275 SolverSat, 17071 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4572 GetRequests, 4459 SyntacticMatches, 24 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171120occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 24.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28517 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 5855 NumberOfCodeBlocks, 5855 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8057 ConstructedInterpolants, 0 QuantifiedInterpolants, 8326594 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3604 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 6281/6683 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/Problem12_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-11-47-884.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-11-47-884.csv Completed graceful shutdown