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/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:54:58,794 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:54:58,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:54:58,811 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:54:58,812 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:54:58,813 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:54:58,815 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:54:58,817 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:54:58,820 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:54:58,822 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:54:58,825 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:54:58,826 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:54:58,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:54:58,828 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:54:58,832 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:54:58,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:54:58,835 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:54:58,845 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:54:58,852 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:54:58,854 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:54:58,858 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:54:58,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:54:58,864 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:54:58,864 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:54:58,864 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:54:58,867 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:54:58,868 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:54:58,869 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:54:58,870 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:54:58,873 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:54:58,873 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:54:58,875 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:54:58,876 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:54:58,876 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:54:58,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:54:58,881 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:54:58,882 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 11:54:58,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:54:58,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:54:58,913 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:54:58,913 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:54:58,914 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:54:58,914 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:54:58,914 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:54:58,914 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:54:58,915 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:54:58,915 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:54:58,915 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:54:58,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:54:58,916 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:54:58,918 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:54:58,918 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:54:58,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:54:58,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:54:58,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:54:58,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:54:58,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:54:58,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:54:58,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:54:58,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:54:58,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:54:58,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:54:58,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:54:58,923 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:54:58,923 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:54:58,923 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:54:58,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:54:58,924 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:54:58,924 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:54:58,924 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:54:58,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:54:59,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:54:59,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:54:59,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:54:59,016 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:54:59,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-09-10 11:54:59,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03a146ae/dd7ad08665fb46cebb3af555be18ed7d/FLAG2e5eb1ec4 [2018-09-10 11:54:59,903 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:54:59,904 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-09-10 11:54:59,946 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03a146ae/dd7ad08665fb46cebb3af555be18ed7d/FLAG2e5eb1ec4 [2018-09-10 11:54:59,962 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03a146ae/dd7ad08665fb46cebb3af555be18ed7d [2018-09-10 11:54:59,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:54:59,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:54:59,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:54:59,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:54:59,986 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:54:59,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:54:59" (1/1) ... [2018-09-10 11:54:59,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57449563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:59, skipping insertion in model container [2018-09-10 11:54:59,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:54:59" (1/1) ... [2018-09-10 11:55:00,390 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:55:01,603 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:55:01,623 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:55:02,474 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:55:02,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02 WrapperNode [2018-09-10 11:55:02,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:55:02,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:55:02,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:55:02,892 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:55:02,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:03,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:03,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:55:03,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:55:03,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:55:03,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:55:04,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (1/1) ... [2018-09-10 11:55:04,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:55:04,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:55:04,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:55:04,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:55:04,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (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 11:55:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:55:04,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:55:04,634 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 11:55:04,634 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 11:55:04,635 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 [2018-09-10 11:55:04,635 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 [2018-09-10 11:55:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:55:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:55:04,635 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 [2018-09-10 11:55:04,635 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 [2018-09-10 11:55:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:55:04,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:55:04,636 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 [2018-09-10 11:55:04,636 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 [2018-09-10 11:55:17,918 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:55:17,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:55:17 BoogieIcfgContainer [2018-09-10 11:55:17,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:55:17,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:55:17,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:55:17,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:55:17,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:54:59" (1/3) ... [2018-09-10 11:55:17,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4714a959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:55:17, skipping insertion in model container [2018-09-10 11:55:17,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:02" (2/3) ... [2018-09-10 11:55:17,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4714a959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:55:17, skipping insertion in model container [2018-09-10 11:55:17,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:55:17" (3/3) ... [2018-09-10 11:55:17,929 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-09-10 11:55:17,939 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:55:17,951 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:55:18,022 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:55:18,023 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:55:18,023 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:55:18,023 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:55:18,023 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:55:18,023 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:55:18,023 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:55:18,023 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:55:18,024 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:55:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:55:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-10 11:55:18,086 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:18,087 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] [2018-09-10 11:55:18,088 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 11:55:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1215082775, now seen corresponding path program 1 times [2018-09-10 11:55:18,097 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:18,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:18,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:18,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:18,150 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:18,602 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 11:55:18,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:18,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:55:18,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:18,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:55:18,629 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:55:18,630 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:55:18,633 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:55:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:37,435 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-09-10 11:55:37,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:55:37,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-09-10 11:55:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:37,487 INFO L225 Difference]: With dead ends: 4105 [2018-09-10 11:55:37,488 INFO L226 Difference]: Without dead ends: 2979 [2018-09-10 11:55:37,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:55:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-09-10 11:55:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-09-10 11:55:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-09-10 11:55:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-09-10 11:55:37,733 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 45 [2018-09-10 11:55:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:37,734 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-09-10 11:55:37,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:55:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-09-10 11:55:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-10 11:55:37,747 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:37,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:37,749 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 11:55:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1429610663, now seen corresponding path program 1 times [2018-09-10 11:55:37,749 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:37,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:37,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:37,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:37,752 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:38,106 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:38,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:38,106 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:38,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:38,109 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:38,109 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:38,109 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-09-10 11:55:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:57,847 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-09-10 11:55:57,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:55:57,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-09-10 11:55:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:57,898 INFO L225 Difference]: With dead ends: 10635 [2018-09-10 11:55:57,898 INFO L226 Difference]: Without dead ends: 7792 [2018-09-10 11:55:57,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:55:57,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-09-10 11:55:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-09-10 11:55:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-09-10 11:55:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-09-10 11:55:58,165 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 116 [2018-09-10 11:55:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:58,166 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-09-10 11:55:58,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:55:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-09-10 11:55:58,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-10 11:55:58,174 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:58,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:58,175 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 11:55:58,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1508034484, now seen corresponding path program 1 times [2018-09-10 11:55:58,176 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:58,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:58,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:58,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:58,178 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:58,537 WARN L175 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:55:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:58,788 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:58,788 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:58,788 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:58,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:58,789 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:58,789 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:58,790 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-09-10 11:56:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:11,848 INFO L93 Difference]: Finished difference Result 25316 states and 42417 transitions. [2018-09-10 11:56:11,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:56:11,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-09-10 11:56:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:11,937 INFO L225 Difference]: With dead ends: 25316 [2018-09-10 11:56:11,937 INFO L226 Difference]: Without dead ends: 17593 [2018-09-10 11:56:11,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:56:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2018-09-10 11:56:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17518. [2018-09-10 11:56:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17518 states. [2018-09-10 11:56:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 26075 transitions. [2018-09-10 11:56:12,426 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 26075 transitions. Word has length 119 [2018-09-10 11:56:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:12,427 INFO L480 AbstractCegarLoop]: Abstraction has 17518 states and 26075 transitions. [2018-09-10 11:56:12,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:56:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 26075 transitions. [2018-09-10 11:56:12,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-10 11:56:12,430 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:12,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:12,431 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 11:56:12,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1986930232, now seen corresponding path program 1 times [2018-09-10 11:56:12,432 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:12,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:12,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:12,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:12,433 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:12,705 WARN L175 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:56:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:12,752 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:12,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:56:12,752 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:12,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:56:12,753 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:56:12,753 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:56:12,753 INFO L87 Difference]: Start difference. First operand 17518 states and 26075 transitions. Second operand 6 states. [2018-09-10 11:56:25,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:25,925 INFO L93 Difference]: Finished difference Result 45756 states and 75653 transitions. [2018-09-10 11:56:25,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:56:25,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-09-10 11:56:25,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:26,067 INFO L225 Difference]: With dead ends: 45756 [2018-09-10 11:56:26,067 INFO L226 Difference]: Without dead ends: 28244 [2018-09-10 11:56:26,120 INFO L604 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 [2018-09-10 11:56:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28244 states. [2018-09-10 11:56:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28244 to 28080. [2018-09-10 11:56:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28080 states. [2018-09-10 11:56:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28080 states to 28080 states and 42438 transitions. [2018-09-10 11:56:26,890 INFO L78 Accepts]: Start accepts. Automaton has 28080 states and 42438 transitions. Word has length 129 [2018-09-10 11:56:26,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:26,891 INFO L480 AbstractCegarLoop]: Abstraction has 28080 states and 42438 transitions. [2018-09-10 11:56:26,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:56:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 28080 states and 42438 transitions. [2018-09-10 11:56:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-10 11:56:26,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:26,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:26,896 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 11:56:26,896 INFO L82 PathProgramCache]: Analyzing trace with hash 283470648, now seen corresponding path program 1 times [2018-09-10 11:56:26,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:26,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:26,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:26,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:26,898 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:27,323 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-10 11:56:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:56:27,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:27,349 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 11:56:27,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:27,370 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:27,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:56:27,669 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:56:28,218 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:56:28,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-10 11:56:28,218 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:28,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:56:28,219 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:56:28,222 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:56:28,222 INFO L87 Difference]: Start difference. First operand 28080 states and 42438 transitions. Second operand 4 states. [2018-09-10 11:56:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:39,311 INFO L93 Difference]: Finished difference Result 80806 states and 131856 transitions. [2018-09-10 11:56:39,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:56:39,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-09-10 11:56:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:39,630 INFO L225 Difference]: With dead ends: 80806 [2018-09-10 11:56:39,630 INFO L226 Difference]: Without dead ends: 52732 [2018-09-10 11:56:39,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:56:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52732 states. [2018-09-10 11:56:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52732 to 52726. [2018-09-10 11:56:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52726 states. [2018-09-10 11:56:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52726 states to 52726 states and 82766 transitions. [2018-09-10 11:56:41,677 INFO L78 Accepts]: Start accepts. Automaton has 52726 states and 82766 transitions. Word has length 146 [2018-09-10 11:56:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:41,677 INFO L480 AbstractCegarLoop]: Abstraction has 52726 states and 82766 transitions. [2018-09-10 11:56:41,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:56:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 52726 states and 82766 transitions. [2018-09-10 11:56:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-10 11:56:41,686 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:41,686 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:56:41,687 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 11:56:41,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1431270141, now seen corresponding path program 1 times [2018-09-10 11:56:41,687 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:41,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:41,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:41,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:41,692 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:42,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:42,031 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 11:56:42,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:42,046 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:42,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 11:56:42,333 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:43,181 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:43,214 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:56:43,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:56:43,214 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:43,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:43,215 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:43,215 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:56:43,216 INFO L87 Difference]: Start difference. First operand 52726 states and 82766 transitions. Second operand 5 states. [2018-09-10 11:56:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:55,772 INFO L93 Difference]: Finished difference Result 144325 states and 247997 transitions. [2018-09-10 11:56:55,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:56:55,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2018-09-10 11:56:55,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:56,224 INFO L225 Difference]: With dead ends: 144325 [2018-09-10 11:56:56,225 INFO L226 Difference]: Without dead ends: 91605 [2018-09-10 11:56:56,375 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:56:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91605 states. [2018-09-10 11:56:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91605 to 91258. [2018-09-10 11:56:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91258 states. [2018-09-10 11:56:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91258 states to 91258 states and 137579 transitions. [2018-09-10 11:56:58,279 INFO L78 Accepts]: Start accepts. Automaton has 91258 states and 137579 transitions. Word has length 195 [2018-09-10 11:56:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:58,279 INFO L480 AbstractCegarLoop]: Abstraction has 91258 states and 137579 transitions. [2018-09-10 11:56:58,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:56:58,280 INFO L276 IsEmpty]: Start isEmpty. Operand 91258 states and 137579 transitions. [2018-09-10 11:56:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-09-10 11:56:58,292 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:58,292 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:56:58,293 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 11:56:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1467795011, now seen corresponding path program 1 times [2018-09-10 11:56:58,293 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:58,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:58,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:58,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:58,294 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:59,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:59,616 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 11:56:59,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:59,627 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:59,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 11:56:59,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:57:00,612 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:00,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:57:00,612 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:00,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:00,613 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:00,614 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:57:00,614 INFO L87 Difference]: Start difference. First operand 91258 states and 137579 transitions. Second operand 5 states. [2018-09-10 11:57:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:19,563 INFO L93 Difference]: Finished difference Result 233606 states and 387237 transitions. [2018-09-10 11:57:19,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:57:19,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-09-10 11:57:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:20,422 INFO L225 Difference]: With dead ends: 233606 [2018-09-10 11:57:20,423 INFO L226 Difference]: Without dead ends: 142354 [2018-09-10 11:57:20,655 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 452 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:57:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142354 states. [2018-09-10 11:57:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142354 to 141828. [2018-09-10 11:57:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141828 states. [2018-09-10 11:57:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141828 states to 141828 states and 228821 transitions. [2018-09-10 11:57:24,722 INFO L78 Accepts]: Start accepts. Automaton has 141828 states and 228821 transitions. Word has length 227 [2018-09-10 11:57:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:24,722 INFO L480 AbstractCegarLoop]: Abstraction has 141828 states and 228821 transitions. [2018-09-10 11:57:24,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 141828 states and 228821 transitions. [2018-09-10 11:57:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-10 11:57:24,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:24,737 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:57:24,737 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 11:57:24,738 INFO L82 PathProgramCache]: Analyzing trace with hash 318563853, now seen corresponding path program 1 times [2018-09-10 11:57:24,738 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:24,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:24,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:24,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:24,739 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:25,030 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-09-10 11:57:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:57:25,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:25,059 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 11:57:25,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:25,070 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:25,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-09-10 11:57:25,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:57:25,419 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:25,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-10 11:57:25,419 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:25,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:57:25,420 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:57:25,420 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:57:25,420 INFO L87 Difference]: Start difference. First operand 141828 states and 228821 transitions. Second operand 3 states. [2018-09-10 11:57:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:36,726 INFO L93 Difference]: Finished difference Result 307050 states and 504450 transitions. [2018-09-10 11:57:36,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:57:36,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2018-09-10 11:57:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:37,357 INFO L225 Difference]: With dead ends: 307050 [2018-09-10 11:57:37,357 INFO L226 Difference]: Without dead ends: 166032 [2018-09-10 11:57:37,671 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:57:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166032 states. [2018-09-10 11:57:41,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166032 to 161200. [2018-09-10 11:57:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161200 states. [2018-09-10 11:57:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161200 states to 161200 states and 246142 transitions. [2018-09-10 11:57:42,001 INFO L78 Accepts]: Start accepts. Automaton has 161200 states and 246142 transitions. Word has length 250 [2018-09-10 11:57:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:42,002 INFO L480 AbstractCegarLoop]: Abstraction has 161200 states and 246142 transitions. [2018-09-10 11:57:42,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:57:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 161200 states and 246142 transitions. [2018-09-10 11:57:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-10 11:57:42,018 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:42,018 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:57:42,019 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 11:57:42,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1299063786, now seen corresponding path program 1 times [2018-09-10 11:57:42,019 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:42,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:42,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:42,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:42,020 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 114 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:57:43,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:43,785 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 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 [2018-09-10 11:57:43,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:43,794 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:43,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-09-10 11:57:44,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 114 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:57:44,220 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:44,221 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 11:57:44,221 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:44,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:44,222 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:44,222 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:57:44,222 INFO L87 Difference]: Start difference. First operand 161200 states and 246142 transitions. Second operand 5 states. [2018-09-10 11:58:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:05,118 INFO L93 Difference]: Finished difference Result 395358 states and 622704 transitions. [2018-09-10 11:58:05,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:58:05,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-09-10 11:58:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:05,974 INFO L225 Difference]: With dead ends: 395358 [2018-09-10 11:58:05,974 INFO L226 Difference]: Without dead ends: 234968 [2018-09-10 11:58:13,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:58:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234968 states. [2018-09-10 11:58:16,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234968 to 233008. [2018-09-10 11:58:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233008 states. [2018-09-10 11:58:17,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233008 states to 233008 states and 335315 transitions. [2018-09-10 11:58:17,412 INFO L78 Accepts]: Start accepts. Automaton has 233008 states and 335315 transitions. Word has length 273 [2018-09-10 11:58:17,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:17,412 INFO L480 AbstractCegarLoop]: Abstraction has 233008 states and 335315 transitions. [2018-09-10 11:58:17,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:17,412 INFO L276 IsEmpty]: Start isEmpty. Operand 233008 states and 335315 transitions. [2018-09-10 11:58:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-09-10 11:58:17,434 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:17,434 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:58:17,434 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 11:58:17,434 INFO L82 PathProgramCache]: Analyzing trace with hash 875107188, now seen corresponding path program 1 times [2018-09-10 11:58:17,435 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:17,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:17,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:17,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:17,436 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 154 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:58:17,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:17,732 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 11:58:17,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:17,739 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:17,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:58:18,747 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:58:18,864 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:58:18,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-09-10 11:58:18,864 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:18,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:58:18,865 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:58:18,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:58:18,866 INFO L87 Difference]: Start difference. First operand 233008 states and 335315 transitions. Second operand 3 states. [2018-09-10 11:58:29,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:29,322 INFO L93 Difference]: Finished difference Result 525136 states and 770771 transitions. [2018-09-10 11:58:29,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:58:29,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-09-10 11:58:29,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:30,192 INFO L225 Difference]: With dead ends: 525136 [2018-09-10 11:58:30,192 INFO L226 Difference]: Without dead ends: 292938 [2018-09-10 11:58:31,382 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:58:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292938 states. [2018-09-10 11:58:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292938 to 290491. [2018-09-10 11:58:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290491 states. [2018-09-10 11:58:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290491 states to 290491 states and 376331 transitions. [2018-09-10 11:58:35,809 INFO L78 Accepts]: Start accepts. Automaton has 290491 states and 376331 transitions. Word has length 308 [2018-09-10 11:58:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:35,809 INFO L480 AbstractCegarLoop]: Abstraction has 290491 states and 376331 transitions. [2018-09-10 11:58:35,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:58:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 290491 states and 376331 transitions. [2018-09-10 11:58:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-09-10 11:58:36,856 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:36,857 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:58:36,857 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 11:58:36,857 INFO L82 PathProgramCache]: Analyzing trace with hash -251605877, now seen corresponding path program 1 times [2018-09-10 11:58:36,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:36,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:36,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:36,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:36,859 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:58:37,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:37,120 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:58:37,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:37,130 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:37,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:58:37,352 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:58:37,477 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:58:37,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-10 11:58:37,478 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:37,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:58:37,478 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:58:37,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:58:37,479 INFO L87 Difference]: Start difference. First operand 290491 states and 376331 transitions. Second operand 3 states. Received shutdown request... [2018-09-10 11:58:41,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:58:41,080 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:58:41,085 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:58:41,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:58:41 BoogieIcfgContainer [2018-09-10 11:58:41,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:58:41,087 INFO L168 Benchmark]: Toolchain (without parser) took 221112.01 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -676.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-10 11:58:41,088 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:58:41,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2913.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:41,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:41,090 INFO L168 Benchmark]: Boogie Preprocessor took 1347.27 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:41,092 INFO L168 Benchmark]: RCFGBuilder took 13358.86 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 165.2 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 67.3 MB). Peak memory consumption was 762.4 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:41,093 INFO L168 Benchmark]: TraceAbstraction took 203165.53 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 206.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-10 11:58:41,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2913.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1347.27 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13358.86 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 165.2 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 67.3 MB). Peak memory consumption was 762.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203165.53 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 206.4 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: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (290491states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (128062 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 167.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6652 SDtfs, 31290 SDslu, 4007 SDs, 0 SdLazy, 51855 SolverSat, 13787 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 123.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3503 GetRequests, 3427 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290491occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 10550 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 3833 NumberOfCodeBlocks, 3833 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5520 ConstructedInterpolants, 0 QuantifiedInterpolants, 2882706 SizeOfPredicates, 18 NumberOfNonLiveVariables, 3225 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 3126/3792 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/Problem13_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-58-41-113.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-58-41-113.csv Completed graceful shutdown