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_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:31:20,778 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:31:20,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:31:20,792 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:31:20,794 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:31:20,795 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:31:20,797 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:31:20,799 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:31:20,802 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:31:20,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:31:20,805 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:31:20,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:31:20,813 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:31:20,814 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:31:20,817 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:31:20,818 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:31:20,819 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:31:20,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:31:20,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:31:20,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:31:20,833 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:31:20,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:31:20,841 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:31:20,841 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:31:20,841 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:31:20,843 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:31:20,844 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:31:20,845 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:31:20,846 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:31:20,851 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:31:20,851 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:31:20,852 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:31:20,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:31:20,852 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:31:20,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:31:20,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:31:20,857 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 [2018-08-07 12:31:20,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:31:20,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:31:20,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:31:20,881 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:31:20,881 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:31:20,881 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:31:20,883 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:31:20,884 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:31:20,884 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:31:20,884 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:31:20,884 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:31:20,885 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:31:20,885 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:31:20,885 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:31:20,886 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:31:20,886 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:31:20,886 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:31:20,886 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:31:20,886 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:31:20,887 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:31:20,887 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:31:20,887 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:31:20,887 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:31:20,887 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:31:20,887 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:31:20,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:31:20,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:31:20,888 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:31:20,888 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:31:20,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:31:20,889 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:31:20,889 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:31:20,889 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:31:20,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:31:20,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:31:20,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:31:20,953 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:31:20,954 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:31:20,955 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-08-07 12:31:21,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cfa640f/eda198de2af840bf8d40349b8c20797d/FLAGb3b5191de [2018-08-07 12:31:21,775 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:31:21,776 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-08-07 12:31:21,811 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cfa640f/eda198de2af840bf8d40349b8c20797d/FLAGb3b5191de [2018-08-07 12:31:21,830 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cfa640f/eda198de2af840bf8d40349b8c20797d [2018-08-07 12:31:21,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:31:21,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:31:21,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:31:21,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:31:21,858 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:31:21,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:31:21" (1/1) ... [2018-08-07 12:31:21,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12208a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:21, skipping insertion in model container [2018-08-07 12:31:21,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:31:21" (1/1) ... [2018-08-07 12:31:22,274 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:31:23,481 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:31:23,500 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:31:24,342 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:31:24,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24 WrapperNode [2018-08-07 12:31:24,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:31:24,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:31:24,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:31:24,736 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:31:24,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:24,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:25,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:31:25,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:31:25,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:31:25,060 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:31:25,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:25,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:26,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:26,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:26,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:26,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:26,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (1/1) ... [2018-08-07 12:31:26,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:31:26,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:31:26,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:31:26,426 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:31:26,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (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 [2018-08-07 12:31:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:31:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:31:26,502 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 [2018-08-07 12:31:26,502 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 [2018-08-07 12:31:26,502 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 [2018-08-07 12:31:26,502 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 [2018-08-07 12:31:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:31:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:31:26,503 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 [2018-08-07 12:31:26,503 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 [2018-08-07 12:31:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:31:26,504 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:31:26,504 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 [2018-08-07 12:31:26,504 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 [2018-08-07 12:31:38,999 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:31:39,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:31:39 BoogieIcfgContainer [2018-08-07 12:31:39,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:31:39,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:31:39,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:31:39,005 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:31:39,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:31:21" (1/3) ... [2018-08-07 12:31:39,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384c225f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:31:39, skipping insertion in model container [2018-08-07 12:31:39,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:31:24" (2/3) ... [2018-08-07 12:31:39,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384c225f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:31:39, skipping insertion in model container [2018-08-07 12:31:39,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:31:39" (3/3) ... [2018-08-07 12:31:39,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27_true-unreach-call.c [2018-08-07 12:31:39,018 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:31:39,028 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:31:39,092 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:31:39,093 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:31:39,093 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:31:39,093 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:31:39,093 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:31:39,093 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:31:39,093 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:31:39,094 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:31:39,094 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:31:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-08-07 12:31:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-08-07 12:31:39,146 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:31:39,147 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:31:39,148 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]=== [2018-08-07 12:31:39,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1018133508, now seen corresponding path program 1 times [2018-08-07 12:31:39,158 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:31:39,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:39,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:31:39,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:39,207 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:31:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:31:39,676 WARN L170 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-08-07 12:31:39,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:31:39,692 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:31:39,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:31:39,693 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:31:39,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:31:39,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:31:39,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:31:39,720 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-08-07 12:31:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:31:54,905 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-08-07 12:31:54,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:31:54,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-08-07 12:31:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:31:54,971 INFO L225 Difference]: With dead ends: 3968 [2018-08-07 12:31:54,971 INFO L226 Difference]: Without dead ends: 2842 [2018-08-07 12:31:54,987 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:31:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-08-07 12:31:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-08-07 12:31:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-08-07 12:31:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-08-07 12:31:55,161 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 52 [2018-08-07 12:31:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:31:55,162 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-08-07 12:31:55,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:31:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-08-07 12:31:55,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-08-07 12:31:55,175 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:31:55,175 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, 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] [2018-08-07 12:31:55,176 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]=== [2018-08-07 12:31:55,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1713454088, now seen corresponding path program 1 times [2018-08-07 12:31:55,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:31:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:55,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:31:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:31:55,179 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:31:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:31:55,554 WARN L170 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:31:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:31:55,616 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:31:55,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:31:55,616 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:31:55,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:31:55,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:31:55,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:31:55,619 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 6 states. [2018-08-07 12:32:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:13,645 INFO L93 Difference]: Finished difference Result 7236 states and 13035 transitions. [2018-08-07 12:32:13,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:32:13,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-08-07 12:32:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:13,685 INFO L225 Difference]: With dead ends: 7236 [2018-08-07 12:32:13,686 INFO L226 Difference]: Without dead ends: 5261 [2018-08-07 12:32:13,698 INFO L603 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 [2018-08-07 12:32:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-08-07 12:32:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5234. [2018-08-07 12:32:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-08-07 12:32:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8155 transitions. [2018-08-07 12:32:13,868 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8155 transitions. Word has length 122 [2018-08-07 12:32:13,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:13,869 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8155 transitions. [2018-08-07 12:32:13,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:32:13,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8155 transitions. [2018-08-07 12:32:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-08-07 12:32:13,879 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:13,880 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:32:13,880 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]=== [2018-08-07 12:32:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2040808108, now seen corresponding path program 1 times [2018-08-07 12:32:13,880 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:13,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:13,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:13,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:13,882 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:32:14,117 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:32:14,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:32:14,117 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:14,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:32:14,118 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:32:14,118 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:32:14,119 INFO L87 Difference]: Start difference. First operand 5234 states and 8155 transitions. Second operand 6 states. [2018-08-07 12:32:15,419 WARN L170 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-08-07 12:32:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:39,500 INFO L93 Difference]: Finished difference Result 16620 states and 27132 transitions. [2018-08-07 12:32:39,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-08-07 12:32:39,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-08-07 12:32:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:39,570 INFO L225 Difference]: With dead ends: 16620 [2018-08-07 12:32:39,570 INFO L226 Difference]: Without dead ends: 11392 [2018-08-07 12:32:39,594 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-08-07 12:32:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2018-08-07 12:32:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 11315. [2018-08-07 12:32:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2018-08-07 12:32:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 16080 transitions. [2018-08-07 12:32:39,915 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 16080 transitions. Word has length 124 [2018-08-07 12:32:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:39,916 INFO L480 AbstractCegarLoop]: Abstraction has 11315 states and 16080 transitions. [2018-08-07 12:32:39,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:32:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 16080 transitions. [2018-08-07 12:32:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-08-07 12:32:39,921 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:39,921 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:32:39,921 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]=== [2018-08-07 12:32:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1435667527, now seen corresponding path program 1 times [2018-08-07 12:32:39,922 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:39,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:39,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:39,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:39,923 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:32:40,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:32:40,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:32:40,119 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:40,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:32:40,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:32:40,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:32:40,120 INFO L87 Difference]: Start difference. First operand 11315 states and 16080 transitions. Second operand 6 states. [2018-08-07 12:32:54,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:32:54,666 INFO L93 Difference]: Finished difference Result 33998 states and 52586 transitions. [2018-08-07 12:32:54,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:32:54,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-08-07 12:32:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:32:54,782 INFO L225 Difference]: With dead ends: 33998 [2018-08-07 12:32:54,782 INFO L226 Difference]: Without dead ends: 22689 [2018-08-07 12:32:54,853 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:32:54,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22689 states. [2018-08-07 12:32:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22689 to 22388. [2018-08-07 12:32:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22388 states. [2018-08-07 12:32:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22388 states to 22388 states and 32214 transitions. [2018-08-07 12:32:55,455 INFO L78 Accepts]: Start accepts. Automaton has 22388 states and 32214 transitions. Word has length 135 [2018-08-07 12:32:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:32:55,456 INFO L480 AbstractCegarLoop]: Abstraction has 22388 states and 32214 transitions. [2018-08-07 12:32:55,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:32:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 22388 states and 32214 transitions. [2018-08-07 12:32:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-08-07 12:32:55,459 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:32:55,460 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:32:55,460 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]=== [2018-08-07 12:32:55,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1623757476, now seen corresponding path program 1 times [2018-08-07 12:32:55,460 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:32:55,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:55,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:32:55,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:32:55,462 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:32:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:32:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:32:55,610 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:32:55,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 12:32:55,611 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:32:55,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:32:55,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:32:55,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:32:55,612 INFO L87 Difference]: Start difference. First operand 22388 states and 32214 transitions. Second operand 3 states. [2018-08-07 12:33:03,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:33:03,135 INFO L93 Difference]: Finished difference Result 44772 states and 64601 transitions. [2018-08-07 12:33:03,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:33:03,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-08-07 12:33:03,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:33:03,212 INFO L225 Difference]: With dead ends: 44772 [2018-08-07 12:33:03,213 INFO L226 Difference]: Without dead ends: 22390 [2018-08-07 12:33:03,256 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:33:03,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2018-08-07 12:33:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 22371. [2018-08-07 12:33:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22371 states. [2018-08-07 12:33:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22371 states to 22371 states and 29249 transitions. [2018-08-07 12:33:03,721 INFO L78 Accepts]: Start accepts. Automaton has 22371 states and 29249 transitions. Word has length 168 [2018-08-07 12:33:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:33:03,722 INFO L480 AbstractCegarLoop]: Abstraction has 22371 states and 29249 transitions. [2018-08-07 12:33:03,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:33:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 22371 states and 29249 transitions. [2018-08-07 12:33:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-08-07 12:33:03,726 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:33:03,727 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:33:03,727 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]=== [2018-08-07 12:33:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash -332098726, now seen corresponding path program 1 times [2018-08-07 12:33:03,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:33:03,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:03,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:03,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:03,729 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:33:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:33:03,948 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:33:03,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:33:03,949 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:33:03,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:33:03,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:33:03,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:33:03,950 INFO L87 Difference]: Start difference. First operand 22371 states and 29249 transitions. Second operand 4 states. [2018-08-07 12:33:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:33:14,429 INFO L93 Difference]: Finished difference Result 64552 states and 89363 transitions. [2018-08-07 12:33:14,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:33:14,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-08-07 12:33:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:33:14,552 INFO L225 Difference]: With dead ends: 64552 [2018-08-07 12:33:14,552 INFO L226 Difference]: Without dead ends: 42187 [2018-08-07 12:33:14,604 INFO L603 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 [2018-08-07 12:33:14,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42187 states. [2018-08-07 12:33:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42187 to 42183. [2018-08-07 12:33:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42183 states. [2018-08-07 12:33:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42183 states to 42183 states and 55622 transitions. [2018-08-07 12:33:15,354 INFO L78 Accepts]: Start accepts. Automaton has 42183 states and 55622 transitions. Word has length 173 [2018-08-07 12:33:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:33:15,355 INFO L480 AbstractCegarLoop]: Abstraction has 42183 states and 55622 transitions. [2018-08-07 12:33:15,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:33:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 42183 states and 55622 transitions. [2018-08-07 12:33:15,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-08-07 12:33:15,374 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:33:15,374 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-08-07 12:33:15,374 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]=== [2018-08-07 12:33:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash 480371756, now seen corresponding path program 1 times [2018-08-07 12:33:15,375 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:33:15,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:15,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:15,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:15,376 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:33:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:15,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:33:15,683 INFO L194 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 [2018-08-07 12:33:15,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:15,710 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:33:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:15,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:33:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-08-07 12:33:16,075 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:33:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:16,545 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:33:16,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-08-07 12:33:16,545 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:33:16,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:33:16,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:33:16,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:33:16,547 INFO L87 Difference]: Start difference. First operand 42183 states and 55622 transitions. Second operand 5 states. [2018-08-07 12:33:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:33:36,866 INFO L93 Difference]: Finished difference Result 122870 states and 174778 transitions. [2018-08-07 12:33:36,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:33:36,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-08-07 12:33:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:33:37,259 INFO L225 Difference]: With dead ends: 122870 [2018-08-07 12:33:37,259 INFO L226 Difference]: Without dead ends: 80693 [2018-08-07 12:33:37,527 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:33:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80693 states. [2018-08-07 12:33:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80693 to 79427. [2018-08-07 12:33:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79427 states. [2018-08-07 12:33:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79427 states to 79427 states and 108584 transitions. [2018-08-07 12:33:40,114 INFO L78 Accepts]: Start accepts. Automaton has 79427 states and 108584 transitions. Word has length 228 [2018-08-07 12:33:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:33:40,114 INFO L480 AbstractCegarLoop]: Abstraction has 79427 states and 108584 transitions. [2018-08-07 12:33:40,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:33:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 79427 states and 108584 transitions. [2018-08-07 12:33:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-08-07 12:33:40,125 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:33:40,126 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-08-07 12:33:40,126 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]=== [2018-08-07 12:33:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 234377704, now seen corresponding path program 1 times [2018-08-07 12:33:40,127 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:33:40,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:40,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:40,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:33:40,128 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:33:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:40,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:33:40,378 INFO L194 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 [2018-08-07 12:33:40,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:33:40,386 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:33:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:33:40,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:33:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-08-07 12:33:40,657 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:33:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:33:40,920 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:33:40,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-08-07 12:33:40,921 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:33:40,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:33:40,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:33:40,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:33:40,922 INFO L87 Difference]: Start difference. First operand 79427 states and 108584 transitions. Second operand 5 states. [2018-08-07 12:34:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:34:05,169 INFO L93 Difference]: Finished difference Result 197115 states and 293170 transitions. [2018-08-07 12:34:05,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:34:05,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-08-07 12:34:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:34:05,830 INFO L225 Difference]: With dead ends: 197115 [2018-08-07 12:34:05,831 INFO L226 Difference]: Without dead ends: 117694 [2018-08-07 12:34:06,052 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:34:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117694 states. [2018-08-07 12:34:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117694 to 117116. [2018-08-07 12:34:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117116 states. [2018-08-07 12:34:09,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117116 states to 117116 states and 169211 transitions. [2018-08-07 12:34:09,685 INFO L78 Accepts]: Start accepts. Automaton has 117116 states and 169211 transitions. Word has length 230 [2018-08-07 12:34:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:34:09,685 INFO L480 AbstractCegarLoop]: Abstraction has 117116 states and 169211 transitions. [2018-08-07 12:34:09,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:34:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 117116 states and 169211 transitions. [2018-08-07 12:34:09,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-08-07 12:34:09,697 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:34:09,697 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:34:09,698 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]=== [2018-08-07 12:34:09,698 INFO L82 PathProgramCache]: Analyzing trace with hash 936256856, now seen corresponding path program 1 times [2018-08-07 12:34:09,698 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:34:09,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:09,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:09,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:09,699 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:34:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:10,035 WARN L170 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:34:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-08-07 12:34:10,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:10,301 INFO L194 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 [2018-08-07 12:34:10,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:10,315 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:10,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-08-07 12:34:10,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:34:11,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:11,085 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:34:11,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:11,102 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:11,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-08-07 12:34:11,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-08-07 12:34:11,704 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 12:34:11,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7, 8, 5] total 17 [2018-08-07 12:34:11,704 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:34:11,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:34:11,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:34:11,708 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-08-07 12:34:11,708 INFO L87 Difference]: Start difference. First operand 117116 states and 169211 transitions. Second operand 5 states. [2018-08-07 12:34:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:34:21,585 INFO L93 Difference]: Finished difference Result 234820 states and 342213 transitions. [2018-08-07 12:34:21,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:34:21,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-08-07 12:34:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:34:21,934 INFO L225 Difference]: With dead ends: 234820 [2018-08-07 12:34:21,934 INFO L226 Difference]: Without dead ends: 117710 [2018-08-07 12:34:22,151 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 936 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-08-07 12:34:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117710 states. [2018-08-07 12:34:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117710 to 117593. [2018-08-07 12:34:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117593 states. [2018-08-07 12:34:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117593 states to 117593 states and 149359 transitions. [2018-08-07 12:34:24,087 INFO L78 Accepts]: Start accepts. Automaton has 117593 states and 149359 transitions. Word has length 238 [2018-08-07 12:34:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:34:24,088 INFO L480 AbstractCegarLoop]: Abstraction has 117593 states and 149359 transitions. [2018-08-07 12:34:24,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:34:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 117593 states and 149359 transitions. [2018-08-07 12:34:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-08-07 12:34:24,114 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:34:24,114 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:34:24,114 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]=== [2018-08-07 12:34:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash -124333094, now seen corresponding path program 1 times [2018-08-07 12:34:24,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:34:24,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:24,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:24,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:24,116 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:34:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:24,422 WARN L170 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:34:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 135 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-08-07 12:34:26,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:26,802 INFO L194 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 [2018-08-07 12:34:26,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:26,817 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:26,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-08-07 12:34:27,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 135 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-08-07 12:34:27,406 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:34:27,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-08-07 12:34:27,407 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:34:27,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:34:27,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:34:27,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:34:27,408 INFO L87 Difference]: Start difference. First operand 117593 states and 149359 transitions. Second operand 5 states. [2018-08-07 12:34:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:34:43,414 INFO L93 Difference]: Finished difference Result 290663 states and 383170 transitions. [2018-08-07 12:34:43,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:34:43,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2018-08-07 12:34:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:34:45,247 INFO L225 Difference]: With dead ends: 290663 [2018-08-07 12:34:45,248 INFO L226 Difference]: Without dead ends: 173880 [2018-08-07 12:34:45,418 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 639 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:34:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173880 states. [2018-08-07 12:34:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173880 to 173409. [2018-08-07 12:34:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173409 states. [2018-08-07 12:34:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173409 states to 173409 states and 214622 transitions. [2018-08-07 12:34:49,222 INFO L78 Accepts]: Start accepts. Automaton has 173409 states and 214622 transitions. Word has length 322 [2018-08-07 12:34:49,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:34:49,223 INFO L480 AbstractCegarLoop]: Abstraction has 173409 states and 214622 transitions. [2018-08-07 12:34:49,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:34:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 173409 states and 214622 transitions. [2018-08-07 12:34:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-08-07 12:34:49,242 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:34:49,243 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:34:49,243 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]=== [2018-08-07 12:34:49,243 INFO L82 PathProgramCache]: Analyzing trace with hash 295644586, now seen corresponding path program 1 times [2018-08-07 12:34:49,243 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:34:49,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:49,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:49,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:34:49,244 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:34:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 135 proven. 150 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-08-07 12:34:49,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:34:49,600 INFO L194 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 [2018-08-07 12:34:49,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:34:49,608 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:34:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:34:49,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:34:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-08-07 12:34:49,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:34:50,380 WARN L170 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-08-07 12:34:50,492 WARN L170 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 12:34:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 135 proven. 150 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-08-07 12:34:50,746 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:34:50,747 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-08-07 12:34:50,747 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:34:50,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:34:50,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:34:50,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 12:34:50,748 INFO L87 Difference]: Start difference. First operand 173409 states and 214622 transitions. Second operand 5 states. Received shutdown request... [2018-08-07 12:35:07,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:35:07,466 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:35:07,473 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:35:07,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:35:07 BoogieIcfgContainer [2018-08-07 12:35:07,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:35:07,474 INFO L168 Benchmark]: Toolchain (without parser) took 225630.50 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 666.5 MB. Max. memory is 7.1 GB. [2018-08-07 12:35:07,476 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-08-07 12:35:07,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2884.90 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: 327.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. [2018-08-07 12:35:07,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 323.63 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-08-07 12:35:07,478 INFO L168 Benchmark]: Boogie Preprocessor took 1365.81 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 983.6 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:35:07,478 INFO L168 Benchmark]: RCFGBuilder took 12574.41 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 201.3 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 5.4 MB). Peak memory consumption was 776.8 MB. Max. memory is 7.1 GB. [2018-08-07 12:35:07,479 INFO L168 Benchmark]: TraceAbstraction took 208472.38 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 947.9 MB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -549.2 MB). Peak memory consumption was 398.7 MB. Max. memory is 7.1 GB. [2018-08-07 12:35:07,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2884.90 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: 327.7 MB). Peak memory consumption was 327.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 323.63 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1365.81 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 983.6 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12574.41 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 201.3 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 5.4 MB). Peak memory consumption was 776.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208472.38 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 947.9 MB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -549.2 MB). Peak memory consumption was 398.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (173409states) and FLOYD_HOARE automaton (currently 7 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (205224 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 208.3s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 183.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7214 SDtfs, 34912 SDslu, 5342 SDs, 0 SdLazy, 68067 SolverSat, 14020 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 150.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3261 GetRequests, 3167 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173409occurred 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: 14.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 3721 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 3714 NumberOfCodeBlocks, 3714 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5280 ConstructedInterpolants, 0 QuantifiedInterpolants, 3908936 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3004 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 3240/4151 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_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-35-07-499.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-35-07-499.csv Completed graceful shutdown