java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:30:48,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:30:48,783 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:30:48,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:30:48,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:30:48,804 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:30:48,805 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:30:48,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:30:48,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:30:48,810 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:30:48,811 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:30:48,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:30:48,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:30:48,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:30:48,816 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:30:48,817 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:30:48,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:30:48,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:30:48,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:30:48,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:30:48,825 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:30:48,827 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:30:48,829 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:30:48,829 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:30:48,830 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:30:48,830 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:30:48,832 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:30:48,832 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:30:48,833 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:30:48,835 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:30:48,835 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:30:48,835 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:30:48,836 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:30:48,836 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:30:48,837 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:30:48,838 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:30:48,838 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:30:48,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:30:48,854 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:30:48,855 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:30:48,855 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:30:48,855 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:30:48,855 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:30:48,856 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:30:48,856 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:30:48,856 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:30:48,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:30:48,856 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:30:48,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:30:48,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:30:48,858 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:30:48,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:30:48,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:30:48,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:30:48,859 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:30:48,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:30:48,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:30:48,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:30:48,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:30:48,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:30:48,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:30:48,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:30:48,862 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:30:48,863 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:30:48,863 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:30:48,863 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:30:48,863 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:30:48,863 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:30:48,864 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:30:48,864 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:30:48,929 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:30:48,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:30:48,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:30:48,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:30:48,957 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:30:48,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10_false-unreach-call.c [2018-07-24 12:30:49,317 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17a2bbfa/7486f5b24eda419ba3ab145828471493/FLAGd33d90a5d [2018-07-24 12:30:49,741 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:30:49,743 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label10_false-unreach-call.c [2018-07-24 12:30:49,772 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17a2bbfa/7486f5b24eda419ba3ab145828471493/FLAGd33d90a5d [2018-07-24 12:30:49,792 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f17a2bbfa/7486f5b24eda419ba3ab145828471493 [2018-07-24 12:30:49,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:30:49,808 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:30:49,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:30:49,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:30:49,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:30:49,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:30:49" (1/1) ... [2018-07-24 12:30:49,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bcc68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:49, skipping insertion in model container [2018-07-24 12:30:49,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:30:49" (1/1) ... [2018-07-24 12:30:50,122 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:30:50,979 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:30:50,999 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:30:51,879 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:30:52,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52 WrapperNode [2018-07-24 12:30:52,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:30:52,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:30:52,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:30:52,045 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:30:52,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:30:52,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:30:52,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:30:52,271 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:30:52,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... [2018-07-24 12:30:52,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:30:52,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:30:52,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:30:52,920 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:30:52,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:30:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:30:52,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:30:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:30:52,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:30:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:30:52,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:30:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:30:52,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:30:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:30:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:30:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:30:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:31:01,387 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:31:01,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:31:01 BoogieIcfgContainer [2018-07-24 12:31:01,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:31:01,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:31:01,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:31:01,393 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:31:01,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:30:49" (1/3) ... [2018-07-24 12:31:01,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3341d39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:31:01, skipping insertion in model container [2018-07-24 12:31:01,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:30:52" (2/3) ... [2018-07-24 12:31:01,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3341d39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:31:01, skipping insertion in model container [2018-07-24 12:31:01,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:31:01" (3/3) ... [2018-07-24 12:31:01,397 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label10_false-unreach-call.c [2018-07-24 12:31:01,408 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:31:01,418 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:31:01,482 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:31:01,483 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:31:01,483 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:31:01,484 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:31:01,484 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:31:01,484 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:31:01,484 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:31:01,484 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:31:01,484 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:31:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:31:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-24 12:31:01,534 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:01,535 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:31:01,536 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:31:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1730835527, now seen corresponding path program 1 times [2018-07-24 12:31:01,544 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:01,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:01,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:01,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:01,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:01,971 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:01,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:31:01,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:01,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:31:01,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:31:01,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:31:01,997 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-07-24 12:31:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:13,304 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-07-24 12:31:13,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:31:13,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-07-24 12:31:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:13,342 INFO L225 Difference]: With dead ends: 2974 [2018-07-24 12:31:13,342 INFO L226 Difference]: Without dead ends: 2193 [2018-07-24 12:31:13,352 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:31:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-07-24 12:31:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-07-24 12:31:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-07-24 12:31:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-07-24 12:31:13,550 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 25 [2018-07-24 12:31:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:13,551 INFO L471 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-07-24 12:31:13,551 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:31:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-07-24 12:31:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-24 12:31:13,557 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:13,557 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:31:13,558 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:31:13,558 INFO L82 PathProgramCache]: Analyzing trace with hash -121581768, now seen corresponding path program 1 times [2018-07-24 12:31:13,558 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:13,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:13,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:13,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:13,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:13,899 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:31:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:13,973 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:13,973 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:31:13,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:13,975 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:31:13,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:31:13,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:31:13,976 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-07-24 12:31:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:23,165 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-07-24 12:31:23,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:31:23,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-07-24 12:31:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:23,205 INFO L225 Difference]: With dead ends: 6600 [2018-07-24 12:31:23,206 INFO L226 Difference]: Without dead ends: 4413 [2018-07-24 12:31:23,214 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:31:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-07-24 12:31:23,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-07-24 12:31:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-07-24 12:31:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-07-24 12:31:23,372 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 95 [2018-07-24 12:31:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:23,373 INFO L471 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-07-24 12:31:23,468 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:31:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-07-24 12:31:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 12:31:23,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:23,477 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:31:23,477 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:31:23,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1283326887, now seen corresponding path program 1 times [2018-07-24 12:31:23,479 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:23,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:23,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:23,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:23,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:23,780 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:23,780 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:31:23,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:23,781 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:31:23,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:31:23,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:31:23,782 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-07-24 12:31:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:29,459 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-07-24 12:31:29,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:31:29,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-24 12:31:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:29,504 INFO L225 Difference]: With dead ends: 11002 [2018-07-24 12:31:29,505 INFO L226 Difference]: Without dead ends: 6630 [2018-07-24 12:31:29,520 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:31:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-07-24 12:31:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-07-24 12:31:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-07-24 12:31:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-07-24 12:31:29,682 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 122 [2018-07-24 12:31:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:29,683 INFO L471 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-07-24 12:31:29,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:31:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-07-24 12:31:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-24 12:31:29,691 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:29,691 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:31:29,694 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:31:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash 370363341, now seen corresponding path program 1 times [2018-07-24 12:31:29,694 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:29,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:29,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:29,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:29,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:31:29,947 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:29,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:31:29,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:29,948 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:31:29,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:31:29,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:31:29,949 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-07-24 12:31:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:36,717 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-07-24 12:31:36,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:31:36,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-07-24 12:31:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:36,746 INFO L225 Difference]: With dead ends: 13174 [2018-07-24 12:31:36,746 INFO L226 Difference]: Without dead ends: 6590 [2018-07-24 12:31:36,768 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:31:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-07-24 12:31:36,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-07-24 12:31:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-07-24 12:31:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-07-24 12:31:36,892 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 132 [2018-07-24 12:31:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:36,893 INFO L471 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-07-24 12:31:36,893 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:31:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-07-24 12:31:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-07-24 12:31:36,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:36,896 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:31:36,896 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:31:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash 907295294, now seen corresponding path program 1 times [2018-07-24 12:31:36,897 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:36,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:36,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:36,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:36,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:31:37,038 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:31:37,038 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:31:37,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:31:37,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:31:37,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:31:37,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:31:37,040 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-07-24 12:31:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:31:44,625 INFO L93 Difference]: Finished difference Result 26000 states and 32594 transitions. [2018-07-24 12:31:44,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:31:44,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 202 [2018-07-24 12:31:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:31:44,703 INFO L225 Difference]: With dead ends: 26000 [2018-07-24 12:31:44,704 INFO L226 Difference]: Without dead ends: 19416 [2018-07-24 12:31:44,729 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:31:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19416 states. [2018-07-24 12:31:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19416 to 19416. [2018-07-24 12:31:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19416 states. [2018-07-24 12:31:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19416 states to 19416 states and 22926 transitions. [2018-07-24 12:31:45,139 INFO L78 Accepts]: Start accepts. Automaton has 19416 states and 22926 transitions. Word has length 202 [2018-07-24 12:31:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:31:45,139 INFO L471 AbstractCegarLoop]: Abstraction has 19416 states and 22926 transitions. [2018-07-24 12:31:45,139 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:31:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 19416 states and 22926 transitions. [2018-07-24 12:31:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-07-24 12:31:45,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:31:45,150 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-07-24 12:31:45,150 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:31:45,150 INFO L82 PathProgramCache]: Analyzing trace with hash 550227481, now seen corresponding path program 1 times [2018-07-24 12:31:45,151 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:31:45,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:45,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:45,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:31:45,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:31:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 12:31:45,519 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:31:45,519 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:31:45,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:45,530 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:31:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:45,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:31:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:31:46,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:31:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 12:31:46,601 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:31:46,602 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:31:46,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:31:46,632 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:31:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:31:46,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:31:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:31:47,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:31:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 12:31:48,134 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:31:48,135 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:31:48,135 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:31:48,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:31:48,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:31:48,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:31:48,137 INFO L87 Difference]: Start difference. First operand 19416 states and 22926 transitions. Second operand 9 states. [2018-07-24 12:32:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:15,511 INFO L93 Difference]: Finished difference Result 71597 states and 88396 transitions. [2018-07-24 12:32:15,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:32:15,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 316 [2018-07-24 12:32:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:15,760 INFO L225 Difference]: With dead ends: 71597 [2018-07-24 12:32:15,761 INFO L226 Difference]: Without dead ends: 50037 [2018-07-24 12:32:15,859 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1340 GetRequests, 1289 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=509, Invalid=2041, Unknown=0, NotChecked=0, Total=2550 [2018-07-24 12:32:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50037 states. [2018-07-24 12:32:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50037 to 49942. [2018-07-24 12:32:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49942 states. [2018-07-24 12:32:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49942 states to 49942 states and 56266 transitions. [2018-07-24 12:32:17,472 INFO L78 Accepts]: Start accepts. Automaton has 49942 states and 56266 transitions. Word has length 316 [2018-07-24 12:32:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:17,473 INFO L471 AbstractCegarLoop]: Abstraction has 49942 states and 56266 transitions. [2018-07-24 12:32:17,473 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:32:17,473 INFO L276 IsEmpty]: Start isEmpty. Operand 49942 states and 56266 transitions. [2018-07-24 12:32:17,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-24 12:32:17,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:17,484 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:32:17,485 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:17,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1439915015, now seen corresponding path program 1 times [2018-07-24 12:32:17,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:17,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:17,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:17,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:17,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:18,250 WARN L169 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:32:18,685 WARN L169 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:32:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 155 proven. 87 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 12:32:19,236 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:19,236 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:32:19,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:19,246 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:19,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-07-24 12:32:19,473 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-07-24 12:32:19,684 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:32:19,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-07-24 12:32:19,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:19,686 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:32:19,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:32:19,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:32:19,689 INFO L87 Difference]: Start difference. First operand 49942 states and 56266 transitions. Second operand 3 states. [2018-07-24 12:32:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:25,298 INFO L93 Difference]: Finished difference Result 117568 states and 134141 transitions. [2018-07-24 12:32:25,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:32:25,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 318 [2018-07-24 12:32:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:25,512 INFO L225 Difference]: With dead ends: 117568 [2018-07-24 12:32:25,512 INFO L226 Difference]: Without dead ends: 67632 [2018-07-24 12:32:25,598 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 634 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:32:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67632 states. [2018-07-24 12:32:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67632 to 67632. [2018-07-24 12:32:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67632 states. [2018-07-24 12:32:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67632 states to 67632 states and 75808 transitions. [2018-07-24 12:32:26,561 INFO L78 Accepts]: Start accepts. Automaton has 67632 states and 75808 transitions. Word has length 318 [2018-07-24 12:32:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:26,562 INFO L471 AbstractCegarLoop]: Abstraction has 67632 states and 75808 transitions. [2018-07-24 12:32:26,562 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:32:26,562 INFO L276 IsEmpty]: Start isEmpty. Operand 67632 states and 75808 transitions. [2018-07-24 12:32:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-24 12:32:26,581 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:26,582 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:32:26,582 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:26,583 INFO L82 PathProgramCache]: Analyzing trace with hash 718236602, now seen corresponding path program 1 times [2018-07-24 12:32:26,583 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:26,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:26,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:26,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:26,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:26,909 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:32:27,062 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:32:27,364 WARN L169 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:32:27,589 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:32:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 155 proven. 95 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 12:32:28,376 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:28,376 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:32:28,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:28,384 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:28,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:32:28,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:32:29,540 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:32:29,540 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:32:29,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:29,556 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:32:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:29,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:32:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:32:30,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:32:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:32:30,463 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:32:30,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 23 [2018-07-24 12:32:30,463 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:32:30,464 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:32:30,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:32:30,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:32:30,465 INFO L87 Difference]: Start difference. First operand 67632 states and 75808 transitions. Second operand 16 states. [2018-07-24 12:33:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:00,333 INFO L93 Difference]: Finished difference Result 157647 states and 185703 transitions. [2018-07-24 12:33:00,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-07-24 12:33:00,333 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 443 [2018-07-24 12:33:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:00,603 INFO L225 Difference]: With dead ends: 157647 [2018-07-24 12:33:00,603 INFO L226 Difference]: Without dead ends: 82695 [2018-07-24 12:33:00,794 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1880 GetRequests, 1805 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1111, Invalid=4589, Unknown=0, NotChecked=0, Total=5700 [2018-07-24 12:33:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82695 states. [2018-07-24 12:33:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82695 to 81606. [2018-07-24 12:33:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81606 states. [2018-07-24 12:33:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81606 states to 81606 states and 88219 transitions. [2018-07-24 12:33:02,069 INFO L78 Accepts]: Start accepts. Automaton has 81606 states and 88219 transitions. Word has length 443 [2018-07-24 12:33:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:02,070 INFO L471 AbstractCegarLoop]: Abstraction has 81606 states and 88219 transitions. [2018-07-24 12:33:02,070 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:33:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 81606 states and 88219 transitions. [2018-07-24 12:33:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-07-24 12:33:02,146 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:02,147 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:02,147 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:02,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1113816258, now seen corresponding path program 1 times [2018-07-24 12:33:02,148 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:02,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:02,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:02,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:02,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 72 proven. 327 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 12:33:03,201 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:03,201 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:33:03,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:03,210 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:03,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 351 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2018-07-24 12:33:04,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 72 proven. 228 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-07-24 12:33:05,261 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:33:05,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-07-24 12:33:05,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:05,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:33:05,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:33:05,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:33:05,263 INFO L87 Difference]: Start difference. First operand 81606 states and 88219 transitions. Second operand 3 states. [2018-07-24 12:33:09,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:09,264 INFO L93 Difference]: Finished difference Result 170468 states and 184300 transitions. [2018-07-24 12:33:09,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:33:09,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 771 [2018-07-24 12:33:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:09,496 INFO L225 Difference]: With dead ends: 170468 [2018-07-24 12:33:09,497 INFO L226 Difference]: Without dead ends: 84729 [2018-07-24 12:33:09,613 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1549 GetRequests, 1541 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:33:09,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84729 states. [2018-07-24 12:33:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84729 to 81897. [2018-07-24 12:33:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81897 states. [2018-07-24 12:33:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81897 states to 81897 states and 88534 transitions. [2018-07-24 12:33:10,719 INFO L78 Accepts]: Start accepts. Automaton has 81897 states and 88534 transitions. Word has length 771 [2018-07-24 12:33:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:10,720 INFO L471 AbstractCegarLoop]: Abstraction has 81897 states and 88534 transitions. [2018-07-24 12:33:10,720 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:33:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 81897 states and 88534 transitions. [2018-07-24 12:33:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2018-07-24 12:33:10,759 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:10,759 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:10,760 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1593183594, now seen corresponding path program 1 times [2018-07-24 12:33:10,760 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:10,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:10,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:10,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:10,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 227 proven. 431 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 12:33:13,178 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:13,178 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:33:13,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:13,186 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:13,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-07-24 12:33:13,814 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-07-24 12:33:14,319 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:14,319 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:33:14,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:14,337 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:14,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-07-24 12:33:15,628 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-07-24 12:33:16,033 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:33:16,034 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 17 [2018-07-24 12:33:16,034 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:33:16,036 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:33:16,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:33:16,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:33:16,037 INFO L87 Difference]: Start difference. First operand 81897 states and 88534 transitions. Second operand 16 states. [2018-07-24 12:33:36,905 WARN L169 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 12:33:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:39,309 INFO L93 Difference]: Finished difference Result 182921 states and 205207 transitions. [2018-07-24 12:33:39,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-07-24 12:33:39,309 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 770 [2018-07-24 12:33:39,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:39,618 INFO L225 Difference]: With dead ends: 182921 [2018-07-24 12:33:39,618 INFO L226 Difference]: Without dead ends: 88358 [2018-07-24 12:33:39,789 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3223 GetRequests, 3130 SyntacticMatches, 10 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2428 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1080, Invalid=6060, Unknown=0, NotChecked=0, Total=7140 [2018-07-24 12:33:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88358 states. [2018-07-24 12:33:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88358 to 88182. [2018-07-24 12:33:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88182 states. [2018-07-24 12:33:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88182 states to 88182 states and 97061 transitions. [2018-07-24 12:33:40,937 INFO L78 Accepts]: Start accepts. Automaton has 88182 states and 97061 transitions. Word has length 770 [2018-07-24 12:33:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:40,938 INFO L471 AbstractCegarLoop]: Abstraction has 88182 states and 97061 transitions. [2018-07-24 12:33:40,938 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:33:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 88182 states and 97061 transitions. [2018-07-24 12:33:40,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-07-24 12:33:40,957 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:40,957 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:40,958 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1816201421, now seen corresponding path program 1 times [2018-07-24 12:33:40,958 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:40,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:40,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:40,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:40,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2018-07-24 12:33:42,176 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:33:42,176 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:33:42,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:42,177 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:33:42,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:33:42,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:33:42,177 INFO L87 Difference]: Start difference. First operand 88182 states and 97061 transitions. Second operand 4 states. [2018-07-24 12:33:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:48,964 INFO L93 Difference]: Finished difference Result 213484 states and 239694 transitions. [2018-07-24 12:33:48,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:33:48,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 771 [2018-07-24 12:33:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:49,314 INFO L225 Difference]: With dead ends: 213484 [2018-07-24 12:33:49,314 INFO L226 Difference]: Without dead ends: 125313 [2018-07-24 12:33:49,511 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:33:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125313 states. [2018-07-24 12:33:51,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125313 to 121671. [2018-07-24 12:33:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121671 states. [2018-07-24 12:33:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121671 states to 121671 states and 134306 transitions. [2018-07-24 12:33:51,653 INFO L78 Accepts]: Start accepts. Automaton has 121671 states and 134306 transitions. Word has length 771 [2018-07-24 12:33:51,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:51,654 INFO L471 AbstractCegarLoop]: Abstraction has 121671 states and 134306 transitions. [2018-07-24 12:33:51,654 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:33:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 121671 states and 134306 transitions. [2018-07-24 12:33:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1225 [2018-07-24 12:33:51,839 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:51,840 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:51,840 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash 665705831, now seen corresponding path program 1 times [2018-07-24 12:33:51,840 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:51,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:51,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:51,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:51,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:52,926 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:33:59,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 726 proven. 2 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-07-24 12:33:59,340 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:59,340 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:33:59,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:59,348 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:59,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2018-07-24 12:34:00,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 72 proven. 354 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-07-24 12:34:02,593 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:34:02,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [21, 5] total 26 [2018-07-24 12:34:02,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:02,597 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:34:02,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:34:02,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2018-07-24 12:34:02,597 INFO L87 Difference]: Start difference. First operand 121671 states and 134306 transitions. Second operand 5 states. [2018-07-24 12:34:09,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:09,584 INFO L93 Difference]: Finished difference Result 238646 states and 254193 transitions. [2018-07-24 12:34:09,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:34:09,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1224 [2018-07-24 12:34:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:09,882 INFO L225 Difference]: With dead ends: 238646 [2018-07-24 12:34:09,882 INFO L226 Difference]: Without dead ends: 130049 [2018-07-24 12:34:10,055 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2485 GetRequests, 2443 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2018-07-24 12:34:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130049 states. [2018-07-24 12:34:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130049 to 124363. [2018-07-24 12:34:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124363 states. [2018-07-24 12:34:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124363 states to 124363 states and 132484 transitions. [2018-07-24 12:34:11,872 INFO L78 Accepts]: Start accepts. Automaton has 124363 states and 132484 transitions. Word has length 1224 [2018-07-24 12:34:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:11,873 INFO L471 AbstractCegarLoop]: Abstraction has 124363 states and 132484 transitions. [2018-07-24 12:34:11,873 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:34:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 124363 states and 132484 transitions. [2018-07-24 12:34:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1438 [2018-07-24 12:34:12,046 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:12,047 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:12,047 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1425253837, now seen corresponding path program 1 times [2018-07-24 12:34:12,048 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:12,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:12,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 295 proven. 1308 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2018-07-24 12:34:14,899 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:14,899 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:14,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:14,909 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:15,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 1451 proven. 0 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2018-07-24 12:34:17,336 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 386 proven. 194 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2018-07-24 12:34:19,255 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:34:19,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [14, 4] total 18 [2018-07-24 12:34:19,256 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:19,257 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:34:19,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:34:19,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:34:19,259 INFO L87 Difference]: Start difference. First operand 124363 states and 132484 transitions. Second operand 4 states. [2018-07-24 12:34:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:23,494 INFO L93 Difference]: Finished difference Result 247306 states and 263628 transitions. [2018-07-24 12:34:23,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:34:23,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1437 [2018-07-24 12:34:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:23,775 INFO L225 Difference]: With dead ends: 247306 [2018-07-24 12:34:23,776 INFO L226 Difference]: Without dead ends: 119299 [2018-07-24 12:34:23,939 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2892 GetRequests, 2875 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:34:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119299 states. [2018-07-24 12:34:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119299 to 119299. [2018-07-24 12:34:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119299 states. [2018-07-24 12:34:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119299 states to 119299 states and 127210 transitions. [2018-07-24 12:34:25,297 INFO L78 Accepts]: Start accepts. Automaton has 119299 states and 127210 transitions. Word has length 1437 [2018-07-24 12:34:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:25,297 INFO L471 AbstractCegarLoop]: Abstraction has 119299 states and 127210 transitions. [2018-07-24 12:34:25,298 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:34:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 119299 states and 127210 transitions. [2018-07-24 12:34:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1437 [2018-07-24 12:34:25,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:25,485 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:25,485 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1662488654, now seen corresponding path program 1 times [2018-07-24 12:34:25,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:25,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:25,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:25,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:25,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:26,763 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-07-24 12:34:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 195 proven. 335 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2018-07-24 12:34:28,321 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:28,321 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:28,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:28,329 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:28,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 1418 proven. 2 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2018-07-24 12:34:29,763 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 307 proven. 266 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2018-07-24 12:34:30,762 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:30,762 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:34:30,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:30,778 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:31,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 1418 proven. 2 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2018-07-24 12:34:32,446 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 307 proven. 266 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2018-07-24 12:34:33,235 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:33,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-07-24 12:34:33,236 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:33,237 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:34:33,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:34:33,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:34:33,238 INFO L87 Difference]: Start difference. First operand 119299 states and 127210 transitions. Second operand 13 states. Received shutdown request... [2018-07-24 12:34:36,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:34:36,799 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:34:36,807 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:34:36,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:34:36 BoogieIcfgContainer [2018-07-24 12:34:36,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:34:36,808 INFO L168 Benchmark]: Toolchain (without parser) took 227001.71 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 12:34:36,810 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:34:36,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2232.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:34:36,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 225.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:34:36,812 INFO L168 Benchmark]: Boogie Preprocessor took 649.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:34:36,813 INFO L168 Benchmark]: RCFGBuilder took 8468.55 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 535.5 MB). Peak memory consumption was 535.5 MB. Max. memory is 7.1 GB. [2018-07-24 12:34:36,813 INFO L168 Benchmark]: TraceAbstraction took 215418.01 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -441.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 12:34:36,819 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 2232.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 225.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 649.47 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8468.55 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 535.5 MB). Peak memory consumption was 535.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215418.01 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -441.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (119299states) and interpolant automaton (currently 6 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (1555 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.3s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 155.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7314 SDtfs, 40454 SDslu, 3418 SDs, 0 SdLazy, 101227 SolverSat, 16471 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 115.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19817 GetRequests, 19474 SyntacticMatches, 39 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5327 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124363occurred in iteration=12, 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: 12.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 13595 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 29.2s InterpolantComputationTime, 17742 NumberOfCodeBlocks, 17742 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 27384 ConstructedInterpolants, 14 QuantifiedInterpolants, 77982685 SizeOfPredicates, 14 NumberOfNonLiveVariables, 13225 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 38 InterpolantComputations, 11 PerfectInterpolantSequences, 26516/30643 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/Problem18_label10_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-34-36-834.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label10_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-34-36-834.csv Completed graceful shutdown