java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:30:07,785 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:30:07,787 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:30:07,800 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:30:07,800 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:30:07,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:30:07,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:30:07,804 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:30:07,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:30:07,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:30:07,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:30:07,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:30:07,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:30:07,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:30:07,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:30:07,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:30:07,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:30:07,818 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:30:07,823 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:30:07,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:30:07,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:30:07,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:30:07,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:30:07,833 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:30:07,834 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:30:07,835 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:30:07,836 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:30:07,837 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:30:07,838 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:30:07,839 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:30:07,841 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:30:07,842 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:30:07,842 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:30:07,844 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:30:07,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:30:07,847 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:30:07,847 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:30:07,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:30:07,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:30:07,875 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:30:07,875 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:30:07,875 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:30:07,876 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:30:07,876 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:30:07,876 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:30:07,876 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:30:07,876 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:30:07,877 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:30:07,877 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:30:07,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:30:07,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:30:07,878 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:30:07,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:30:07,878 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:30:07,879 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:30:07,879 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:30:07,879 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:30:07,879 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:30:07,879 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:30:07,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:30:07,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:30:07,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:30:07,880 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:30:07,881 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:30:07,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:30:07,881 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:30:07,881 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:30:07,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:30:07,882 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:30:07,882 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:30:07,882 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:30:07,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:30:07,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:30:07,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:30:07,965 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:30:07,966 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:30:07,967 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-09-18 11:30:08,338 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12847abe2/361d405098c944eab035eb122eaa0740/FLAG2fea0ebce [2018-09-18 11:30:08,815 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:30:08,816 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-09-18 11:30:08,850 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12847abe2/361d405098c944eab035eb122eaa0740/FLAG2fea0ebce [2018-09-18 11:30:08,870 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12847abe2/361d405098c944eab035eb122eaa0740 [2018-09-18 11:30:08,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:30:08,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:30:08,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:08,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:30:08,896 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:30:08,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:08" (1/1) ... [2018-09-18 11:30:08,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:08, skipping insertion in model container [2018-09-18 11:30:08,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:08" (1/1) ... [2018-09-18 11:30:08,914 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:30:10,149 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:10,168 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:30:10,767 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:11,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11 WrapperNode [2018-09-18 11:30:11,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:11,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:11,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:30:11,020 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:30:11,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:11,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:11,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:11,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:30:11,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:30:11,223 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:30:11,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:11,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:11,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:11,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:11,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:12,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:12,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... [2018-09-18 11:30:12,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:30:12,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:30:12,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:30:12,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:30:12,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:30:12,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:30:12,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:30:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:30:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:30:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:30:12,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:30:12,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:30:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:30:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:30:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:30:12,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:30:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:30:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:30:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:30:22,576 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:30:22,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:30:22 BoogieIcfgContainer [2018-09-18 11:30:22,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:30:22,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:30:22,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:30:22,582 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:30:22,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:30:08" (1/3) ... [2018-09-18 11:30:22,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0d5941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:30:22, skipping insertion in model container [2018-09-18 11:30:22,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:11" (2/3) ... [2018-09-18 11:30:22,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0d5941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:30:22, skipping insertion in model container [2018-09-18 11:30:22,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:30:22" (3/3) ... [2018-09-18 11:30:22,586 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16_true-unreach-call.c [2018-09-18 11:30:22,596 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:30:22,606 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:30:22,670 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:30:22,671 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:30:22,671 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:30:22,672 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:30:22,672 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:30:22,672 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:30:22,672 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:30:22,672 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:30:22,672 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:30:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:30:22,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-18 11:30:22,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:22,728 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:22,729 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash -710124980, now seen corresponding path program 1 times [2018-09-18 11:30:22,738 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:22,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:22,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:22,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:22,794 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:23,353 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:23,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:30:23,353 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:23,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:30:23,374 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:30:23,374 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:30:23,377 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:30:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:31,949 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:30:31,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:30:31,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-09-18 11:30:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:31,988 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:30:31,989 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:30:32,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:30:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:30:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:30:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:30:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-18 11:30:32,179 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 72 [2018-09-18 11:30:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:32,180 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-18 11:30:32,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:30:32,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-18 11:30:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-18 11:30:32,196 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:32,197 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:32,197 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash -377303342, now seen corresponding path program 1 times [2018-09-18 11:30:32,197 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:32,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:32,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:32,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:32,199 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:32,507 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:32,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:30:32,507 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:32,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:32,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:32,510 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:30:32,510 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-09-18 11:30:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:44,013 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-09-18 11:30:44,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:30:44,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-09-18 11:30:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:44,037 INFO L225 Difference]: With dead ends: 4038 [2018-09-18 11:30:44,037 INFO L226 Difference]: Without dead ends: 2440 [2018-09-18 11:30:44,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:30:44,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-09-18 11:30:44,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-09-18 11:30:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-09-18 11:30:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-09-18 11:30:44,115 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 146 [2018-09-18 11:30:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:44,116 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-09-18 11:30:44,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:30:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-09-18 11:30:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-18 11:30:44,128 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:44,128 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:30:44,130 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash 719530862, now seen corresponding path program 1 times [2018-09-18 11:30:44,130 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:44,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:44,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:44,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:44,132 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:44,290 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:44,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:30:44,290 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:44,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:30:44,291 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:30:44,292 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:30:44,292 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-09-18 11:30:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:53,744 INFO L93 Difference]: Finished difference Result 9492 states and 16754 transitions. [2018-09-18 11:30:53,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:30:53,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-09-18 11:30:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:53,792 INFO L225 Difference]: With dead ends: 9492 [2018-09-18 11:30:53,792 INFO L226 Difference]: Without dead ends: 7085 [2018-09-18 11:30:53,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:30:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-09-18 11:30:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-09-18 11:30:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-09-18 11:30:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11749 transitions. [2018-09-18 11:30:53,994 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11749 transitions. Word has length 148 [2018-09-18 11:30:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:53,995 INFO L480 AbstractCegarLoop]: Abstraction has 7085 states and 11749 transitions. [2018-09-18 11:30:53,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:30:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11749 transitions. [2018-09-18 11:30:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-18 11:30:54,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:54,001 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:30:54,001 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:54,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1702645438, now seen corresponding path program 1 times [2018-09-18 11:30:54,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:54,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:54,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:54,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:54,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:54,275 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:30:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:54,671 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:54,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:30:54,671 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:54,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:30:54,672 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:30:54,672 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:30:54,673 INFO L87 Difference]: Start difference. First operand 7085 states and 11749 transitions. Second operand 6 states. [2018-09-18 11:31:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:05,995 INFO L93 Difference]: Finished difference Result 15965 states and 26509 transitions. [2018-09-18 11:31:05,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:05,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-09-18 11:31:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:06,041 INFO L225 Difference]: With dead ends: 15965 [2018-09-18 11:31:06,042 INFO L226 Difference]: Without dead ends: 8886 [2018-09-18 11:31:06,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8886 states. [2018-09-18 11:31:06,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8886 to 8848. [2018-09-18 11:31:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2018-09-18 11:31:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 14005 transitions. [2018-09-18 11:31:06,294 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 14005 transitions. Word has length 154 [2018-09-18 11:31:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:06,295 INFO L480 AbstractCegarLoop]: Abstraction has 8848 states and 14005 transitions. [2018-09-18 11:31:06,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 14005 transitions. [2018-09-18 11:31:06,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-18 11:31:06,300 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:06,300 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:31:06,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:06,301 INFO L82 PathProgramCache]: Analyzing trace with hash -901803398, now seen corresponding path program 1 times [2018-09-18 11:31:06,301 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:06,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:06,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:06,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:06,302 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:06,654 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:06,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:31:06,655 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:06,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:31:06,656 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:31:06,656 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:31:06,656 INFO L87 Difference]: Start difference. First operand 8848 states and 14005 transitions. Second operand 5 states. [2018-09-18 11:31:14,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:14,361 INFO L93 Difference]: Finished difference Result 26985 states and 44144 transitions. [2018-09-18 11:31:14,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:31:14,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-09-18 11:31:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:14,457 INFO L225 Difference]: With dead ends: 26985 [2018-09-18 11:31:14,458 INFO L226 Difference]: Without dead ends: 18143 [2018-09-18 11:31:14,490 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2018-09-18 11:31:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 17975. [2018-09-18 11:31:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17975 states. [2018-09-18 11:31:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 26771 transitions. [2018-09-18 11:31:14,964 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 26771 transitions. Word has length 158 [2018-09-18 11:31:14,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:14,965 INFO L480 AbstractCegarLoop]: Abstraction has 17975 states and 26771 transitions. [2018-09-18 11:31:14,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:31:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 26771 transitions. [2018-09-18 11:31:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-18 11:31:14,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:14,977 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:14,977 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1738437273, now seen corresponding path program 1 times [2018-09-18 11:31:14,977 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:14,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:14,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:14,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:14,979 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:15,246 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:15,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:15,639 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:31:15,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:15,655 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:15,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-18 11:31:16,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:16,679 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:31:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:17,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:31:17,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:31:17,520 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:17,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:31:17,521 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:31:17,521 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:31:17,521 INFO L87 Difference]: Start difference. First operand 17975 states and 26771 transitions. Second operand 5 states. [2018-09-18 11:31:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:30,187 INFO L93 Difference]: Finished difference Result 59637 states and 95111 transitions. [2018-09-18 11:31:30,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:31:30,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2018-09-18 11:31:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:30,378 INFO L225 Difference]: With dead ends: 59637 [2018-09-18 11:31:30,379 INFO L226 Difference]: Without dead ends: 41668 [2018-09-18 11:31:30,472 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 517 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:31:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41668 states. [2018-09-18 11:31:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41668 to 41259. [2018-09-18 11:31:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41259 states. [2018-09-18 11:31:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41259 states to 41259 states and 59730 transitions. [2018-09-18 11:31:31,485 INFO L78 Accepts]: Start accepts. Automaton has 41259 states and 59730 transitions. Word has length 261 [2018-09-18 11:31:31,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:31,485 INFO L480 AbstractCegarLoop]: Abstraction has 41259 states and 59730 transitions. [2018-09-18 11:31:31,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:31:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 41259 states and 59730 transitions. [2018-09-18 11:31:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-18 11:31:31,521 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:31,521 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:31,521 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:31,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1680591689, now seen corresponding path program 1 times [2018-09-18 11:31:31,522 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:31,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:31,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:31,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:31,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:31,948 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:31:31,948 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:31,948 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:31:31,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:31,958 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:32,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-18 11:31:32,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:31:32,759 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:32,759 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:31:32,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:32,785 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:32,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-18 11:31:33,077 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:31:33,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:31:33,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:31:33,274 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:31:33,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:31:33,275 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:31:33,275 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:31:33,275 INFO L87 Difference]: Start difference. First operand 41259 states and 59730 transitions. Second operand 9 states. [2018-09-18 11:31:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:48,373 INFO L93 Difference]: Finished difference Result 93575 states and 149562 transitions. [2018-09-18 11:31:48,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:31:48,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-09-18 11:31:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:48,567 INFO L225 Difference]: With dead ends: 93575 [2018-09-18 11:31:48,567 INFO L226 Difference]: Without dead ends: 45296 [2018-09-18 11:31:48,673 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1344 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:31:48,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45296 states. [2018-09-18 11:31:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45296 to 42958. [2018-09-18 11:31:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42958 states. [2018-09-18 11:31:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42958 states to 42958 states and 61240 transitions. [2018-09-18 11:31:49,818 INFO L78 Accepts]: Start accepts. Automaton has 42958 states and 61240 transitions. Word has length 337 [2018-09-18 11:31:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:49,818 INFO L480 AbstractCegarLoop]: Abstraction has 42958 states and 61240 transitions. [2018-09-18 11:31:49,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:31:49,818 INFO L276 IsEmpty]: Start isEmpty. Operand 42958 states and 61240 transitions. [2018-09-18 11:31:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-18 11:31:49,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:49,853 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 11:31:49,853 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:49,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1310492895, now seen corresponding path program 1 times [2018-09-18 11:31:49,853 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:49,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:49,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:49,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:49,855 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 195 proven. 155 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 11:31:50,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:50,204 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:31:50,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:50,212 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:50,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-09-18 11:31:50,395 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 195 proven. 155 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-18 11:31:50,686 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:31:50,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 11:31:50,686 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:50,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:31:50,687 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:31:50,687 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:50,689 INFO L87 Difference]: Start difference. First operand 42958 states and 61240 transitions. Second operand 5 states. [2018-09-18 11:32:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:01,752 INFO L93 Difference]: Finished difference Result 131391 states and 203801 transitions. [2018-09-18 11:32:01,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:32:01,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2018-09-18 11:32:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:02,087 INFO L225 Difference]: With dead ends: 131391 [2018-09-18 11:32:02,087 INFO L226 Difference]: Without dead ends: 87658 [2018-09-18 11:32:02,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 680 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:32:02,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87658 states. [2018-09-18 11:32:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87658 to 81652. [2018-09-18 11:32:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81652 states. [2018-09-18 11:32:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81652 states to 81652 states and 116130 transitions. [2018-09-18 11:32:04,843 INFO L78 Accepts]: Start accepts. Automaton has 81652 states and 116130 transitions. Word has length 341 [2018-09-18 11:32:04,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:04,844 INFO L480 AbstractCegarLoop]: Abstraction has 81652 states and 116130 transitions. [2018-09-18 11:32:04,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 81652 states and 116130 transitions. [2018-09-18 11:32:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-09-18 11:32:04,873 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:04,873 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:04,873 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:04,874 INFO L82 PathProgramCache]: Analyzing trace with hash 392559577, now seen corresponding path program 1 times [2018-09-18 11:32:04,874 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:04,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:04,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:04,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:04,875 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:05,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:05,249 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:32:05,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:05,258 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:05,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-18 11:32:05,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:05,685 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:32:05,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:32:05,685 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:05,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:05,686 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:05,686 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:32:05,686 INFO L87 Difference]: Start difference. First operand 81652 states and 116130 transitions. Second operand 5 states. [2018-09-18 11:32:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:13,781 INFO L93 Difference]: Finished difference Result 180501 states and 269651 transitions. [2018-09-18 11:32:13,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:32:13,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2018-09-18 11:32:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:14,111 INFO L225 Difference]: With dead ends: 180501 [2018-09-18 11:32:14,112 INFO L226 Difference]: Without dead ends: 98855 [2018-09-18 11:32:14,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 708 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:32:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98855 states. [2018-09-18 11:32:15,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98855 to 96408. [2018-09-18 11:32:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96408 states. [2018-09-18 11:32:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96408 states to 96408 states and 129172 transitions. [2018-09-18 11:32:16,059 INFO L78 Accepts]: Start accepts. Automaton has 96408 states and 129172 transitions. Word has length 357 [2018-09-18 11:32:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:16,059 INFO L480 AbstractCegarLoop]: Abstraction has 96408 states and 129172 transitions. [2018-09-18 11:32:16,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 96408 states and 129172 transitions. [2018-09-18 11:32:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-09-18 11:32:16,104 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:16,105 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:16,105 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:16,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1091137553, now seen corresponding path program 1 times [2018-09-18 11:32:16,106 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:16,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:16,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:16,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:16,107 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-18 11:32:17,453 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:17,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:32:17,453 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:17,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:32:17,454 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:32:17,454 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:32:17,454 INFO L87 Difference]: Start difference. First operand 96408 states and 129172 transitions. Second operand 3 states. [2018-09-18 11:32:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:24,993 INFO L93 Difference]: Finished difference Result 233318 states and 333083 transitions. [2018-09-18 11:32:24,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:32:24,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 455 [2018-09-18 11:32:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:25,567 INFO L225 Difference]: With dead ends: 233318 [2018-09-18 11:32:25,567 INFO L226 Difference]: Without dead ends: 136884 [2018-09-18 11:32:25,922 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:32:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136884 states. [2018-09-18 11:32:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136884 to 136861. [2018-09-18 11:32:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136861 states. [2018-09-18 11:32:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136861 states to 136861 states and 187636 transitions. [2018-09-18 11:32:29,641 INFO L78 Accepts]: Start accepts. Automaton has 136861 states and 187636 transitions. Word has length 455 [2018-09-18 11:32:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:29,641 INFO L480 AbstractCegarLoop]: Abstraction has 136861 states and 187636 transitions. [2018-09-18 11:32:29,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:32:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 136861 states and 187636 transitions. [2018-09-18 11:32:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-09-18 11:32:29,681 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:29,682 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:29,682 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1788868121, now seen corresponding path program 1 times [2018-09-18 11:32:29,682 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:29,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:29,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:29,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:29,684 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-09-18 11:32:30,022 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:30,023 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:32:30,023 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:30,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:32:30,023 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:32:30,023 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:32:30,024 INFO L87 Difference]: Start difference. First operand 136861 states and 187636 transitions. Second operand 3 states. [2018-09-18 11:32:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:38,357 INFO L93 Difference]: Finished difference Result 305077 states and 431781 transitions. [2018-09-18 11:32:38,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:32:38,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 491 [2018-09-18 11:32:38,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:38,877 INFO L225 Difference]: With dead ends: 305077 [2018-09-18 11:32:38,878 INFO L226 Difference]: Without dead ends: 168990 [2018-09-18 11:32:40,770 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:32:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168990 states. [2018-09-18 11:32:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168990 to 162741. [2018-09-18 11:32:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162741 states. [2018-09-18 11:32:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162741 states to 162741 states and 220389 transitions. [2018-09-18 11:32:49,295 INFO L78 Accepts]: Start accepts. Automaton has 162741 states and 220389 transitions. Word has length 491 [2018-09-18 11:32:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:49,296 INFO L480 AbstractCegarLoop]: Abstraction has 162741 states and 220389 transitions. [2018-09-18 11:32:49,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:32:49,296 INFO L276 IsEmpty]: Start isEmpty. Operand 162741 states and 220389 transitions. [2018-09-18 11:32:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-09-18 11:32:49,437 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:49,438 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:32:49,438 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash 582967242, now seen corresponding path program 1 times [2018-09-18 11:32:49,439 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:49,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:49,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:49,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:49,440 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-09-18 11:32:50,740 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:50,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:32:50,741 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:50,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:32:50,745 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:32:50,745 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:32:50,746 INFO L87 Difference]: Start difference. First operand 162741 states and 220389 transitions. Second operand 4 states. [2018-09-18 11:33:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:03,987 INFO L93 Difference]: Finished difference Result 374112 states and 530047 transitions. [2018-09-18 11:33:03,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:33:03,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 686 [2018-09-18 11:33:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:03,992 INFO L225 Difference]: With dead ends: 374112 [2018-09-18 11:33:03,993 INFO L226 Difference]: Without dead ends: 0 [2018-09-18 11:33:04,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:33:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-18 11:33:04,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-18 11:33:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-18 11:33:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-18 11:33:04,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 686 [2018-09-18 11:33:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:04,712 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-18 11:33:04,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:33:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-18 11:33:04,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-18 11:33:04,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-18 11:33:06,812 WARN L178 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2018-09-18 11:33:09,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:09,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:09,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:09,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:09,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:09,593 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:10,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:10,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:10,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:10,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,171 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,250 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,349 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:11,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:12,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:13,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:13,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:13,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:13,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,364 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:14,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,268 WARN L178 SmtUtils]: Spent 5.92 s on a formula simplification. DAG size of input: 1013 DAG size of output: 781 [2018-09-18 11:33:15,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,395 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:15,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,680 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:16,708 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:17,000 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:17,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:18,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:18,479 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:18,520 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:19,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:19,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:19,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:19,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:19,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:19,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:20,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:20,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:20,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:33:20,474 WARN L178 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 1013 DAG size of output: 781 [2018-09-18 11:33:24,661 WARN L178 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-18 11:33:28,884 WARN L178 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 635 DAG size of output: 65 [2018-09-18 11:33:32,914 WARN L178 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-18 11:33:36,960 WARN L178 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-18 11:33:40,951 WARN L178 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-18 11:33:45,159 WARN L178 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 639 DAG size of output: 74 [2018-09-18 11:33:49,175 WARN L178 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 Received shutdown request... [2018-09-18 11:33:50,280 WARN L186 SmtUtils]: Removed 2 from assertion stack [2018-09-18 11:33:50,281 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-18 11:33:50,282 INFO L168 Benchmark]: Toolchain (without parser) took 221399.03 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:33:50,284 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:33:50,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2131.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:50,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:50,286 INFO L168 Benchmark]: Boogie Preprocessor took 929.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 902.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:50,287 INFO L168 Benchmark]: RCFGBuilder took 10424.94 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 646.1 MB). Peak memory consumption was 646.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:50,288 INFO L168 Benchmark]: TraceAbstraction took 207702.89 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-18 11:33:50,293 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2131.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 203.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 929.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 902.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10424.94 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 646.1 MB). Peak memory consumption was 646.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207702.89 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 3.0 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 207]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 770. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-33-50-306.csv Completed graceful shutdown