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/Problem03_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:01:43,745 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:01:43,747 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:01:43,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:01:43,761 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:01:43,763 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:01:43,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:01:43,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:01:43,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:01:43,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:01:43,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:01:43,771 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:01:43,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:01:43,773 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:01:43,774 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:01:43,775 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:01:43,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:01:43,778 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:01:43,780 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:01:43,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:01:43,783 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:01:43,784 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:01:43,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:01:43,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:01:43,787 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:01:43,788 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:01:43,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:01:43,790 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:01:43,791 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:01:43,792 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:01:43,793 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:01:43,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:01:43,794 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:01:43,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:01:43,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:01:43,796 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:01:43,796 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 11:01:43,812 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:01:43,813 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:01:43,813 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:01:43,814 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:01:43,814 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:01:43,814 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:01:43,814 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:01:43,814 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:01:43,815 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:01:43,815 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:01:43,815 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:01:43,816 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:01:43,816 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:01:43,816 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:01:43,817 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:01:43,817 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:01:43,817 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:01:43,817 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:01:43,818 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:01:43,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:01:43,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:01:43,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:01:43,819 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:01:43,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:01:43,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:01:43,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:01:43,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:01:43,820 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:01:43,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:01:43,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:01:43,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:01:43,821 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:01:43,821 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:01:43,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:01:43,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:01:43,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:01:43,911 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:01:43,911 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:01:43,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c [2018-07-24 11:01:44,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfafe747d/f2c2068f23c848168ede459c43d491ec/FLAG0c5386aa1 [2018-07-24 11:01:44,619 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:01:44,621 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c [2018-07-24 11:01:44,646 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfafe747d/f2c2068f23c848168ede459c43d491ec/FLAG0c5386aa1 [2018-07-24 11:01:44,661 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfafe747d/f2c2068f23c848168ede459c43d491ec [2018-07-24 11:01:44,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:01:44,672 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:01:44,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:44,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:01:44,680 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:01:44,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658546c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:44, skipping insertion in model container [2018-07-24 11:01:44,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:01:44" (1/1) ... [2018-07-24 11:01:44,911 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:01:45,400 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:45,416 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:01:45,679 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:01:45,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45 WrapperNode [2018-07-24 11:01:45,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:01:45,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:45,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:01:45,753 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:01:45,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:45,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:45,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:01:45,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:01:45,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:01:45,914 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:01:45,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:45,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:45,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:45,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:46,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:46,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:46,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (1/1) ... [2018-07-24 11:01:46,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:01:46,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:01:46,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:01:46,272 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:01:46,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (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 11:01:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:01:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:01:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:01:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:01:46,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:01:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:01:46,348 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 11:01:46,348 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 11:01:51,867 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:01:51,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:51 BoogieIcfgContainer [2018-07-24 11:01:51,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:01:51,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:01:51,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:01:51,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:01:51,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:01:44" (1/3) ... [2018-07-24 11:01:51,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96fdfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:51, skipping insertion in model container [2018-07-24 11:01:51,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:01:45" (2/3) ... [2018-07-24 11:01:51,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96fdfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:01:51, skipping insertion in model container [2018-07-24 11:01:51,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:01:51" (3/3) ... [2018-07-24 11:01:51,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label31_false-unreach-call.c [2018-07-24 11:01:51,894 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:01:51,906 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:01:51,958 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:01:51,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:01:51,960 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:01:51,960 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:01:51,960 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:01:51,960 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:01:51,960 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:01:51,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:01:51,960 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:01:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 11:01:52,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-24 11:01:52,012 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:52,014 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:52,014 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 11:01:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1476467039, now seen corresponding path program 1 times [2018-07-24 11:01:52,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:52,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:52,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:52,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:52,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:52,856 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:01:53,047 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 11:01:53,050 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:53,050 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:01:53,050 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:53,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:53,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:53,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:53,081 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-07-24 11:01:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:55,243 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-07-24 11:01:55,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:55,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2018-07-24 11:01:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:55,277 INFO L225 Difference]: With dead ends: 848 [2018-07-24 11:01:55,278 INFO L226 Difference]: Without dead ends: 534 [2018-07-24 11:01:55,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:01:55,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-07-24 11:01:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-07-24 11:01:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-07-24 11:01:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-07-24 11:01:55,387 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 158 [2018-07-24 11:01:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:55,388 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-07-24 11:01:55,388 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-07-24 11:01:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-24 11:01:55,396 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:55,396 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:01:55,396 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 11:01:55,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1030265149, now seen corresponding path program 1 times [2018-07-24 11:01:55,397 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:55,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:55,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:55,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:55,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:55,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:55,952 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:01:55,952 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 11:01:55,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:55,977 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:01:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:56,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:01:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:56,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:01:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:56,797 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:01:56,797 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 11:01:56,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:56,799 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:01:56,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:01:56,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:01:56,800 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-07-24 11:01:59,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:01:59,066 INFO L93 Difference]: Finished difference Result 1478 states and 2483 transitions. [2018-07-24 11:01:59,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:01:59,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2018-07-24 11:01:59,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:01:59,077 INFO L225 Difference]: With dead ends: 1478 [2018-07-24 11:01:59,077 INFO L226 Difference]: Without dead ends: 952 [2018-07-24 11:01:59,083 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 342 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:01:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2018-07-24 11:01:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 950. [2018-07-24 11:01:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2018-07-24 11:01:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1405 transitions. [2018-07-24 11:01:59,131 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1405 transitions. Word has length 171 [2018-07-24 11:01:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:01:59,131 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1405 transitions. [2018-07-24 11:01:59,132 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:01:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1405 transitions. [2018-07-24 11:01:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-24 11:01:59,138 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:01:59,139 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:59,139 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 11:01:59,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1979892132, now seen corresponding path program 1 times [2018-07-24 11:01:59,139 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:01:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:59,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:01:59,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:01:59,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:01:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:01:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:01:59,413 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:01:59,413 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:01:59,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:01:59,414 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:01:59,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:01:59,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:01:59,415 INFO L87 Difference]: Start difference. First operand 950 states and 1405 transitions. Second operand 6 states. [2018-07-24 11:02:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:03,559 INFO L93 Difference]: Finished difference Result 3008 states and 4637 transitions. [2018-07-24 11:02:03,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:02:03,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-07-24 11:02:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:03,584 INFO L225 Difference]: With dead ends: 3008 [2018-07-24 11:02:03,584 INFO L226 Difference]: Without dead ends: 2064 [2018-07-24 11:02:03,592 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:02:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2018-07-24 11:02:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2021. [2018-07-24 11:02:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2021 states. [2018-07-24 11:02:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2876 transitions. [2018-07-24 11:02:03,701 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2876 transitions. Word has length 186 [2018-07-24 11:02:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:03,702 INFO L471 AbstractCegarLoop]: Abstraction has 2021 states and 2876 transitions. [2018-07-24 11:02:03,702 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:03,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2876 transitions. [2018-07-24 11:02:03,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-24 11:02:03,711 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:03,711 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:02:03,712 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 11:02:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1627625909, now seen corresponding path program 1 times [2018-07-24 11:02:03,713 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:03,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:03,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:03,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:03,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:04,298 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:04,298 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:02:04,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:04,321 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:04,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:04,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:05,010 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:02:05,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 11:02:05,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:05,012 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:05,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:05,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:05,013 INFO L87 Difference]: Start difference. First operand 2021 states and 2876 transitions. Second operand 3 states. [2018-07-24 11:02:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:06,753 INFO L93 Difference]: Finished difference Result 5977 states and 8705 transitions. [2018-07-24 11:02:06,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:06,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2018-07-24 11:02:06,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:06,784 INFO L225 Difference]: With dead ends: 5977 [2018-07-24 11:02:06,785 INFO L226 Difference]: Without dead ends: 3962 [2018-07-24 11:02:06,795 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 390 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2018-07-24 11:02:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3939. [2018-07-24 11:02:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-07-24 11:02:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5484 transitions. [2018-07-24 11:02:06,924 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5484 transitions. Word has length 196 [2018-07-24 11:02:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:06,925 INFO L471 AbstractCegarLoop]: Abstraction has 3939 states and 5484 transitions. [2018-07-24 11:02:06,926 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5484 transitions. [2018-07-24 11:02:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 11:02:06,940 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:06,940 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:06,941 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 11:02:06,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1465212775, now seen corresponding path program 1 times [2018-07-24 11:02:06,941 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:06,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:06,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:06,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:06,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:07,371 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:02:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:07,586 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:07,587 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 11:02:07,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:07,594 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:07,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:07,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:08,216 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:02:08,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 11:02:08,216 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:08,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:08,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:08,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:02:08,218 INFO L87 Difference]: Start difference. First operand 3939 states and 5484 transitions. Second operand 3 states. [2018-07-24 11:02:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:09,893 INFO L93 Difference]: Finished difference Result 11699 states and 16655 transitions. [2018-07-24 11:02:09,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:09,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-07-24 11:02:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:09,944 INFO L225 Difference]: With dead ends: 11699 [2018-07-24 11:02:09,944 INFO L226 Difference]: Without dead ends: 7766 [2018-07-24 11:02:09,965 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 407 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:02:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2018-07-24 11:02:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7733. [2018-07-24 11:02:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7733 states. [2018-07-24 11:02:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7733 states to 7733 states and 10724 transitions. [2018-07-24 11:02:10,360 INFO L78 Accepts]: Start accepts. Automaton has 7733 states and 10724 transitions. Word has length 204 [2018-07-24 11:02:10,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:10,361 INFO L471 AbstractCegarLoop]: Abstraction has 7733 states and 10724 transitions. [2018-07-24 11:02:10,361 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7733 states and 10724 transitions. [2018-07-24 11:02:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-24 11:02:10,395 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:10,395 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:10,396 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 11:02:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1392586847, now seen corresponding path program 1 times [2018-07-24 11:02:10,396 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:10,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:10,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:10,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:10,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:10,787 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:02:10,787 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:02:10,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:10,788 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:10,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:10,788 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:10,788 INFO L87 Difference]: Start difference. First operand 7733 states and 10724 transitions. Second operand 3 states. [2018-07-24 11:02:12,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:12,935 INFO L93 Difference]: Finished difference Result 22558 states and 32100 transitions. [2018-07-24 11:02:12,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:12,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-07-24 11:02:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:13,010 INFO L225 Difference]: With dead ends: 22558 [2018-07-24 11:02:13,010 INFO L226 Difference]: Without dead ends: 14831 [2018-07-24 11:02:13,046 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:02:13,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14831 states. [2018-07-24 11:02:13,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14831 to 14760. [2018-07-24 11:02:13,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14760 states. [2018-07-24 11:02:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14760 states to 14760 states and 20691 transitions. [2018-07-24 11:02:13,500 INFO L78 Accepts]: Start accepts. Automaton has 14760 states and 20691 transitions. Word has length 259 [2018-07-24 11:02:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:13,501 INFO L471 AbstractCegarLoop]: Abstraction has 14760 states and 20691 transitions. [2018-07-24 11:02:13,501 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 14760 states and 20691 transitions. [2018-07-24 11:02:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-24 11:02:13,570 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:13,570 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:13,570 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 11:02:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1659214072, now seen corresponding path program 1 times [2018-07-24 11:02:13,571 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:13,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:13,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:13,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:13,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 123 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 11:02:14,131 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:14,131 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 11:02:14,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:14,145 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:14,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:15,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:16,085 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:16,085 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 11:02:16,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:16,111 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:16,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:17,467 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 11:02:18,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:18,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 11:02:18,236 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:18,237 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:02:18,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:02:18,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:02:18,238 INFO L87 Difference]: Start difference. First operand 14760 states and 20691 transitions. Second operand 9 states. [2018-07-24 11:02:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:24,595 INFO L93 Difference]: Finished difference Result 58982 states and 88773 transitions. [2018-07-24 11:02:24,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:02:24,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 276 [2018-07-24 11:02:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:24,835 INFO L225 Difference]: With dead ends: 58982 [2018-07-24 11:02:24,835 INFO L226 Difference]: Without dead ends: 44228 [2018-07-24 11:02:24,907 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1098 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-07-24 11:02:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44228 states. [2018-07-24 11:02:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44228 to 43892. [2018-07-24 11:02:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43892 states. [2018-07-24 11:02:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43892 states to 43892 states and 61176 transitions. [2018-07-24 11:02:26,511 INFO L78 Accepts]: Start accepts. Automaton has 43892 states and 61176 transitions. Word has length 276 [2018-07-24 11:02:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:26,511 INFO L471 AbstractCegarLoop]: Abstraction has 43892 states and 61176 transitions. [2018-07-24 11:02:26,511 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:02:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 43892 states and 61176 transitions. [2018-07-24 11:02:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-07-24 11:02:26,685 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:26,685 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:02:26,685 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 11:02:26,686 INFO L82 PathProgramCache]: Analyzing trace with hash -342494276, now seen corresponding path program 1 times [2018-07-24 11:02:26,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:26,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:26,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 193 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 11:02:27,420 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:27,420 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 11:02:27,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:27,435 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:27,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:02:27,909 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:02:28,209 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:02:28,210 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 11:02:28,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:02:28,210 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:02:28,211 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:02:28,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:28,211 INFO L87 Difference]: Start difference. First operand 43892 states and 61176 transitions. Second operand 3 states. [2018-07-24 11:02:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:30,636 INFO L93 Difference]: Finished difference Result 100722 states and 144372 transitions. [2018-07-24 11:02:30,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:02:30,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-07-24 11:02:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:30,869 INFO L225 Difference]: With dead ends: 100722 [2018-07-24 11:02:30,869 INFO L226 Difference]: Without dead ends: 56841 [2018-07-24 11:02:30,972 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 601 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:31,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56841 states. [2018-07-24 11:02:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56841 to 56836. [2018-07-24 11:02:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56836 states. [2018-07-24 11:02:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56836 states to 56836 states and 80416 transitions. [2018-07-24 11:02:32,344 INFO L78 Accepts]: Start accepts. Automaton has 56836 states and 80416 transitions. Word has length 301 [2018-07-24 11:02:32,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:32,345 INFO L471 AbstractCegarLoop]: Abstraction has 56836 states and 80416 transitions. [2018-07-24 11:02:32,345 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:02:32,345 INFO L276 IsEmpty]: Start isEmpty. Operand 56836 states and 80416 transitions. [2018-07-24 11:02:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-24 11:02:32,470 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:32,471 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:02:32,471 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 11:02:32,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1069362015, now seen corresponding path program 1 times [2018-07-24 11:02:32,471 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:32,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:32,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:32,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:32,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:32,896 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:02:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 155 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:34,030 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:34,030 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 11:02:34,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:34,048 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:34,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:34,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:34,771 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:34,771 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 11:02:34,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:34,787 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:35,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:35,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:36,084 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:36,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-07-24 11:02:36,085 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:36,086 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 11:02:36,087 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 11:02:36,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:02:36,088 INFO L87 Difference]: Start difference. First operand 56836 states and 80416 transitions. Second operand 13 states. [2018-07-24 11:02:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:41,497 INFO L93 Difference]: Finished difference Result 147980 states and 238388 transitions. [2018-07-24 11:02:41,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 11:02:41,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 318 [2018-07-24 11:02:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:42,725 INFO L225 Difference]: With dead ends: 147980 [2018-07-24 11:02:42,726 INFO L226 Difference]: Without dead ends: 91155 [2018-07-24 11:02:42,846 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1306 GetRequests, 1272 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2018-07-24 11:02:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91155 states. [2018-07-24 11:02:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91155 to 88150. [2018-07-24 11:02:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88150 states. [2018-07-24 11:02:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88150 states to 88150 states and 122991 transitions. [2018-07-24 11:02:45,299 INFO L78 Accepts]: Start accepts. Automaton has 88150 states and 122991 transitions. Word has length 318 [2018-07-24 11:02:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:45,300 INFO L471 AbstractCegarLoop]: Abstraction has 88150 states and 122991 transitions. [2018-07-24 11:02:45,300 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 11:02:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 88150 states and 122991 transitions. [2018-07-24 11:02:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-24 11:02:45,534 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:45,535 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:02:45,535 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 11:02:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash -963261019, now seen corresponding path program 1 times [2018-07-24 11:02:45,535 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:45,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:45,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:45,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:45,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:46,274 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:46,274 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 11:02:46,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:46,288 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:46,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:47,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:47,666 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:02:47,666 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:02:47,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:47,682 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:02:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:02:48,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:02:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:48,467 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:02:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:02:48,739 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:02:48,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 7 [2018-07-24 11:02:48,740 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:02:48,741 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:02:48,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:02:48,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:02:48,742 INFO L87 Difference]: Start difference. First operand 88150 states and 122991 transitions. Second operand 6 states. [2018-07-24 11:02:54,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:02:54,995 INFO L93 Difference]: Finished difference Result 212976 states and 317378 transitions. [2018-07-24 11:02:54,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:02:54,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 373 [2018-07-24 11:02:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:02:55,511 INFO L225 Difference]: With dead ends: 212976 [2018-07-24 11:02:55,512 INFO L226 Difference]: Without dead ends: 124837 [2018-07-24 11:02:55,712 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1484 SyntacticMatches, 10 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:02:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124837 states. [2018-07-24 11:02:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124837 to 117556. [2018-07-24 11:02:57,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117556 states. [2018-07-24 11:02:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117556 states to 117556 states and 156430 transitions. [2018-07-24 11:02:59,445 INFO L78 Accepts]: Start accepts. Automaton has 117556 states and 156430 transitions. Word has length 373 [2018-07-24 11:02:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:02:59,445 INFO L471 AbstractCegarLoop]: Abstraction has 117556 states and 156430 transitions. [2018-07-24 11:02:59,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:02:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 117556 states and 156430 transitions. [2018-07-24 11:02:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-07-24 11:02:59,678 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:02:59,679 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:59,679 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 11:02:59,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1317530464, now seen corresponding path program 1 times [2018-07-24 11:02:59,679 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:02:59,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:59,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:02:59,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:02:59,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:02:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 273 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:03:00,398 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:00,398 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 11:03:00,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:00,412 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:00,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:00,809 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 273 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:03:00,956 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:00,956 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 11:03:00,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:00,975 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:01,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:01,892 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 273 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:03:02,216 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:03:02,216 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 14 [2018-07-24 11:03:02,216 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:03:02,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:03:02,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:03:02,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:03:02,218 INFO L87 Difference]: Start difference. First operand 117556 states and 156430 transitions. Second operand 6 states. [2018-07-24 11:03:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:08,068 INFO L93 Difference]: Finished difference Result 234996 states and 334769 transitions. [2018-07-24 11:03:08,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:03:08,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 405 [2018-07-24 11:03:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:08,567 INFO L225 Difference]: With dead ends: 234996 [2018-07-24 11:03:08,567 INFO L226 Difference]: Without dead ends: 117471 [2018-07-24 11:03:08,826 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1630 GetRequests, 1614 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:03:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117471 states. [2018-07-24 11:03:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117471 to 108150. [2018-07-24 11:03:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108150 states. [2018-07-24 11:03:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108150 states to 108150 states and 135939 transitions. [2018-07-24 11:03:12,314 INFO L78 Accepts]: Start accepts. Automaton has 108150 states and 135939 transitions. Word has length 405 [2018-07-24 11:03:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:12,314 INFO L471 AbstractCegarLoop]: Abstraction has 108150 states and 135939 transitions. [2018-07-24 11:03:12,314 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:03:12,314 INFO L276 IsEmpty]: Start isEmpty. Operand 108150 states and 135939 transitions. [2018-07-24 11:03:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-07-24 11:03:12,490 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:12,490 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:03:12,490 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 11:03:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash -638945896, now seen corresponding path program 1 times [2018-07-24 11:03:12,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:12,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:12,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:12,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:12,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:12,865 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:03:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 249 proven. 134 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:03:13,333 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:13,333 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:13,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:13,342 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:13,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-07-24 11:03:13,881 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 249 proven. 134 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:03:14,216 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:14,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 11:03:14,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:14,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:03:14,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:03:14,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:03:14,218 INFO L87 Difference]: Start difference. First operand 108150 states and 135939 transitions. Second operand 6 states. [2018-07-24 11:03:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:18,592 INFO L93 Difference]: Finished difference Result 191793 states and 240993 transitions. [2018-07-24 11:03:18,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 11:03:18,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 418 [2018-07-24 11:03:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:19,041 INFO L225 Difference]: With dead ends: 191793 [2018-07-24 11:03:19,041 INFO L226 Difference]: Without dead ends: 112636 [2018-07-24 11:03:19,206 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 828 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:03:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112636 states. [2018-07-24 11:03:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112636 to 109659. [2018-07-24 11:03:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109659 states. [2018-07-24 11:03:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109659 states to 109659 states and 137138 transitions. [2018-07-24 11:03:25,896 INFO L78 Accepts]: Start accepts. Automaton has 109659 states and 137138 transitions. Word has length 418 [2018-07-24 11:03:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:25,896 INFO L471 AbstractCegarLoop]: Abstraction has 109659 states and 137138 transitions. [2018-07-24 11:03:25,897 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:03:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 109659 states and 137138 transitions. [2018-07-24 11:03:26,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-24 11:03:26,113 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:26,113 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:26,113 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 11:03:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash 809530476, now seen corresponding path program 1 times [2018-07-24 11:03:26,114 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:26,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:26,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:26,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:26,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 296 proven. 30 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:26,524 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:26,524 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:26,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:26,532 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:26,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-07-24 11:03:27,009 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-24 11:03:27,225 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:03:27,225 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:03:27,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:03:27,226 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:03:27,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:03:27,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:03:27,226 INFO L87 Difference]: Start difference. First operand 109659 states and 137138 transitions. Second operand 5 states. [2018-07-24 11:03:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:31,341 INFO L93 Difference]: Finished difference Result 222596 states and 285892 transitions. [2018-07-24 11:03:31,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:03:31,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 431 [2018-07-24 11:03:31,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:31,737 INFO L225 Difference]: With dead ends: 222596 [2018-07-24 11:03:31,737 INFO L226 Difference]: Without dead ends: 114016 [2018-07-24 11:03:31,946 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:03:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114016 states. [2018-07-24 11:03:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114016 to 109944. [2018-07-24 11:03:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109944 states. [2018-07-24 11:03:34,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109944 states to 109944 states and 135109 transitions. [2018-07-24 11:03:34,077 INFO L78 Accepts]: Start accepts. Automaton has 109944 states and 135109 transitions. Word has length 431 [2018-07-24 11:03:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:34,077 INFO L471 AbstractCegarLoop]: Abstraction has 109944 states and 135109 transitions. [2018-07-24 11:03:34,078 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:03:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 109944 states and 135109 transitions. [2018-07-24 11:03:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-07-24 11:03:34,779 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:34,780 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:03:34,780 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 11:03:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1028149390, now seen corresponding path program 1 times [2018-07-24 11:03:34,781 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:34,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:34,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:34,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:34,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 343 proven. 67 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-07-24 11:03:35,324 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:35,324 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:35,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:35,331 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:35,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:35,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 343 proven. 67 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-07-24 11:03:36,141 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:36,142 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 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:03:36,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:36,161 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:36,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 393 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:37,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 343 proven. 67 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-07-24 11:03:37,343 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:03:37,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-07-24 11:03:37,343 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:03:37,344 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 11:03:37,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 11:03:37,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:03:37,345 INFO L87 Difference]: Start difference. First operand 109944 states and 135109 transitions. Second operand 7 states. [2018-07-24 11:03:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:03:45,230 INFO L93 Difference]: Finished difference Result 368999 states and 504699 transitions. [2018-07-24 11:03:45,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:03:45,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439 [2018-07-24 11:03:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:03:46,362 INFO L225 Difference]: With dead ends: 368999 [2018-07-24 11:03:46,363 INFO L226 Difference]: Without dead ends: 289484 [2018-07-24 11:03:46,574 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1748 SyntacticMatches, 8 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:03:46,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289484 states. [2018-07-24 11:03:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289484 to 279098. [2018-07-24 11:03:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279098 states. [2018-07-24 11:03:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279098 states to 279098 states and 355600 transitions. [2018-07-24 11:03:55,002 INFO L78 Accepts]: Start accepts. Automaton has 279098 states and 355600 transitions. Word has length 439 [2018-07-24 11:03:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:03:55,002 INFO L471 AbstractCegarLoop]: Abstraction has 279098 states and 355600 transitions. [2018-07-24 11:03:55,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 11:03:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 279098 states and 355600 transitions. [2018-07-24 11:03:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-07-24 11:03:55,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:03:55,691 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:03:55,691 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:03:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash 739106282, now seen corresponding path program 1 times [2018-07-24 11:03:55,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:03:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:55,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:55,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:03:55,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:03:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 345 proven. 67 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:03:56,226 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:56,226 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:03:56,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:56,234 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:56,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:56,788 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 345 proven. 67 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:03:58,391 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:03:58,391 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 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:03:58,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:03:58,406 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:03:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:03:59,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:03:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-07-24 11:03:59,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:03:59,900 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 11:04:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 345 proven. 67 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 11:04:00,328 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:04:00,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 11:04:00,329 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:04:00,330 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:04:00,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:04:00,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:04:00,331 INFO L87 Difference]: Start difference. First operand 279098 states and 355600 transitions. Second operand 9 states. [2018-07-24 11:04:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:04:16,879 INFO L93 Difference]: Finished difference Result 601971 states and 785246 transitions. [2018-07-24 11:04:16,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 11:04:16,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 441 [2018-07-24 11:04:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:04:18,341 INFO L225 Difference]: With dead ends: 601971 [2018-07-24 11:04:18,341 INFO L226 Difference]: Without dead ends: 323501 [2018-07-24 11:04:20,001 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1828 GetRequests, 1784 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1737, Unknown=0, NotChecked=0, Total=2070 [2018-07-24 11:04:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323501 states. [2018-07-24 11:04:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323501 to 313570. [2018-07-24 11:04:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313570 states. [2018-07-24 11:04:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313570 states to 313570 states and 383518 transitions. [2018-07-24 11:04:35,469 INFO L78 Accepts]: Start accepts. Automaton has 313570 states and 383518 transitions. Word has length 441 [2018-07-24 11:04:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:04:35,470 INFO L471 AbstractCegarLoop]: Abstraction has 313570 states and 383518 transitions. [2018-07-24 11:04:35,470 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:04:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 313570 states and 383518 transitions. [2018-07-24 11:04:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-07-24 11:04:36,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:04:36,089 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:36,090 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:04:36,090 INFO L82 PathProgramCache]: Analyzing trace with hash -598581751, now seen corresponding path program 1 times [2018-07-24 11:04:36,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:04:36,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:36,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:36,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:04:36,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:04:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 325 proven. 30 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 11:04:36,772 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:36,773 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:04:36,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:36,789 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:37,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 11:04:37,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 325 proven. 30 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 11:04:37,469 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:04:37,469 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 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:04:37,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:04:37,485 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:04:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:04:38,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:04:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 11:04:39,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:04:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 325 proven. 30 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 11:04:39,754 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:04:39,754 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 15 [2018-07-24 11:04:39,754 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:04:39,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 11:04:39,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 11:04:39,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:04:39,756 INFO L87 Difference]: Start difference. First operand 313570 states and 383518 transitions. Second operand 7 states. [2018-07-24 11:04:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:04:53,072 INFO L93 Difference]: Finished difference Result 608337 states and 773652 transitions. [2018-07-24 11:04:53,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:04:53,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2018-07-24 11:04:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:04:54,379 INFO L225 Difference]: With dead ends: 608337 [2018-07-24 11:04:54,379 INFO L226 Difference]: Without dead ends: 297354 [2018-07-24 11:04:54,992 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1761 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-07-24 11:04:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297354 states. [2018-07-24 11:05:01,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297354 to 282537. [2018-07-24 11:05:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282537 states. [2018-07-24 11:05:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282537 states to 282537 states and 334019 transitions. [2018-07-24 11:05:02,669 INFO L78 Accepts]: Start accepts. Automaton has 282537 states and 334019 transitions. Word has length 443 [2018-07-24 11:05:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:05:02,669 INFO L471 AbstractCegarLoop]: Abstraction has 282537 states and 334019 transitions. [2018-07-24 11:05:02,669 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 11:05:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 282537 states and 334019 transitions. [2018-07-24 11:05:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-07-24 11:05:04,516 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:05:04,517 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:05:04,517 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:05:04,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1444834513, now seen corresponding path program 1 times [2018-07-24 11:05:04,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:05:04,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:04,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:04,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:04,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:05:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 448 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 11:05:05,314 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:05:05,314 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:05:05,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:05,322 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:05:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:05,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:05:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 11:05:06,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:05:06,352 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 11:05:06,549 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 11:05:06,700 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 11:05:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-07-24 11:05:07,146 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:05:07,147 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 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:05:07,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:07,166 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:05:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:08,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:05:08,455 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 11:05:08,830 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 11:05:09,890 WARN L169 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-07-24 11:05:10,717 WARN L169 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-07-24 11:05:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 415 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:05:12,778 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:05:12,928 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2018-07-24 11:05:13,867 WARN L169 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2018-07-24 11:05:14,440 WARN L169 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2018-07-24 11:05:15,015 WARN L169 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2018-07-24 11:05:15,228 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 Received shutdown request... [2018-07-24 11:05:15,496 WARN L177 SmtUtils]: Removed 13 from assertion stack [2018-07-24 11:05:15,496 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 11:05:15,697 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:05:15,697 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:05:15,704 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:05:15,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:05:15 BoogieIcfgContainer [2018-07-24 11:05:15,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:05:15,705 INFO L168 Benchmark]: Toolchain (without parser) took 211033.52 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -111.6 MB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB. [2018-07-24 11:05:15,706 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:05:15,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1078.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:15,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:15,708 INFO L168 Benchmark]: Boogie Preprocessor took 357.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -949.9 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:15,709 INFO L168 Benchmark]: RCFGBuilder took 5595.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 285.6 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:05:15,710 INFO L168 Benchmark]: TraceAbstraction took 203835.56 ms. Allocated memory was 2.4 GB in the beginning and 5.7 GB in the end (delta: 3.3 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 447.0 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-07-24 11:05:15,714 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1078.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 160.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.3 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -949.9 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5595.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 285.6 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203835.56 ms. Allocated memory was 2.4 GB in the beginning and 5.7 GB in the end (delta: 3.3 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 447.0 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1488]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1488). Cancelled while BasicCegarLoop was analyzing trace of length 445 with TraceHistMax 5, while TraceCheckSpWp was constructing backward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 28. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 203.7s OverallTime, 17 OverallIterations, 5 TraceHistogramMax, 98.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4756 SDtfs, 16079 SDslu, 5177 SDs, 0 SdLazy, 27912 SolverSat, 4485 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14440 GetRequests, 14196 SyntacticMatches, 47 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313570occurred in iteration=15, 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: 54.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 62305 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.5s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 22.0s InterpolantComputationTime, 12130 NumberOfCodeBlocks, 12130 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 19185 ConstructedInterpolants, 0 QuantifiedInterpolants, 16096586 SizeOfPredicates, 33 NumberOfNonLiveVariables, 25671 ConjunctsInSsa, 150 ConjunctsInUnsatCore, 56 InterpolantComputations, 13 PerfectInterpolantSequences, 15405/16600 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/Problem03_label31_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-05-15-728.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label31_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-05-15-728.csv Completed graceful shutdown