./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58249a19aaa2ca34edeb532954b326c7f760e66f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 19:34:57,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 19:34:57,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 19:34:57,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 19:34:57,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 19:34:57,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 19:34:57,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 19:34:57,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 19:34:57,997 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 19:34:58,002 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 19:34:58,003 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 19:34:58,006 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 19:34:58,008 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 19:34:58,009 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 19:34:58,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 19:34:58,011 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 19:34:58,012 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 19:34:58,013 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 19:34:58,015 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 19:34:58,017 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 19:34:58,018 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 19:34:58,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 19:34:58,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 19:34:58,022 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 19:34:58,023 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 19:34:58,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 19:34:58,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 19:34:58,025 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 19:34:58,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 19:34:58,028 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 19:34:58,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 19:34:58,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 19:34:58,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 19:34:58,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 19:34:58,030 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 19:34:58,031 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 19:34:58,031 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 19:34:58,046 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 19:34:58,047 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 19:34:58,047 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 19:34:58,048 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 19:34:58,048 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 19:34:58,048 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 19:34:58,049 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 19:34:58,049 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 19:34:58,049 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 19:34:58,049 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 19:34:58,049 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 19:34:58,050 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 19:34:58,050 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 19:34:58,050 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 19:34:58,050 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 19:34:58,050 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 19:34:58,050 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 19:34:58,051 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 19:34:58,051 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 19:34:58,051 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 19:34:58,051 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 19:34:58,051 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 19:34:58,051 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 19:34:58,052 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 19:34:58,052 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 19:34:58,052 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 19:34:58,052 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 19:34:58,052 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 19:34:58,052 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 19:34:58,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 19:34:58,053 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58249a19aaa2ca34edeb532954b326c7f760e66f [2018-11-28 19:34:58,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 19:34:58,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 19:34:58,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 19:34:58,121 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 19:34:58,121 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 19:34:58,122 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i [2018-11-28 19:34:58,184 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f6f01e4/770d72bba42b4cce815fdf87947cf2ee/FLAG8425fe270 [2018-11-28 19:34:58,694 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 19:34:58,697 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i [2018-11-28 19:34:58,717 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f6f01e4/770d72bba42b4cce815fdf87947cf2ee/FLAG8425fe270 [2018-11-28 19:34:58,996 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f6f01e4/770d72bba42b4cce815fdf87947cf2ee [2018-11-28 19:34:59,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 19:34:59,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 19:34:59,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 19:34:59,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 19:34:59,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 19:34:59,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:58" (1/1) ... [2018-11-28 19:34:59,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f5feda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59, skipping insertion in model container [2018-11-28 19:34:59,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:58" (1/1) ... [2018-11-28 19:34:59,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 19:34:59,078 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 19:34:59,538 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:34:59,552 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 19:34:59,732 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:34:59,824 INFO L195 MainTranslator]: Completed translation [2018-11-28 19:34:59,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59 WrapperNode [2018-11-28 19:34:59,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 19:34:59,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 19:34:59,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 19:34:59,826 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 19:34:59,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 19:34:59,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 19:34:59,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 19:34:59,891 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 19:34:59,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (1/1) ... [2018-11-28 19:34:59,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 19:34:59,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 19:34:59,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 19:34:59,944 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 19:34:59,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (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 [2018-11-28 19:35:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 19:35:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-28 19:35:00,024 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-28 19:35:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-28 19:35:00,025 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-28 19:35:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 19:35:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-28 19:35:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 19:35:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-28 19:35:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 19:35:00,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 19:35:00,029 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-28 19:35:00,514 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 19:35:00,514 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 19:35:00,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:00 BoogieIcfgContainer [2018-11-28 19:35:00,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 19:35:00,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 19:35:00,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 19:35:00,519 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 19:35:00,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:58" (1/3) ... [2018-11-28 19:35:00,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aa462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:00, skipping insertion in model container [2018-11-28 19:35:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:59" (2/3) ... [2018-11-28 19:35:00,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aa462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:00, skipping insertion in model container [2018-11-28 19:35:00,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:00" (3/3) ... [2018-11-28 19:35:00,523 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_true-unreach-call.i [2018-11-28 19:35:00,557 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,558 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,558 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,558 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,559 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,559 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,559 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,559 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,559 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,560 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,560 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,560 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,560 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,561 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,561 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,561 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,561 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,561 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,562 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,562 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,562 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,562 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,563 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,563 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,563 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,563 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,563 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,564 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:35:00,594 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 19:35:00,594 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 19:35:00,606 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 19:35:00,623 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 19:35:00,647 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 19:35:00,647 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 19:35:00,647 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 19:35:00,648 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 19:35:00,648 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 19:35:00,648 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 19:35:00,648 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 19:35:00,648 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 19:35:00,648 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 19:35:00,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-11-28 19:35:00,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-11-28 19:35:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-11-28 19:35:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 19:35:00,743 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:00,744 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:00,746 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:00,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:00,753 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-11-28 19:35:00,756 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:00,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:00,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:00,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:00,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:01,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:01,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:35:01,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:35:01,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:35:01,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:01,205 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-11-28 19:35:01,403 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 19:35:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:01,569 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-11-28 19:35:01,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 19:35:01,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 19:35:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:01,591 INFO L225 Difference]: With dead ends: 1411 [2018-11-28 19:35:01,592 INFO L226 Difference]: Without dead ends: 322 [2018-11-28 19:35:01,594 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:35:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-11-28 19:35:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-11-28 19:35:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-11-28 19:35:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-11-28 19:35:01,670 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-11-28 19:35:01,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:01,670 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-11-28 19:35:01,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:35:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-11-28 19:35:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 19:35:01,672 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:01,673 INFO L402 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] [2018-11-28 19:35:01,673 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:01,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:01,673 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-11-28 19:35:01,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:01,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:01,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:01,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:01,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:01,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:01,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:35:01,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:35:01,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:35:01,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:35:01,860 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-11-28 19:35:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:02,001 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-11-28 19:35:02,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 19:35:02,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-28 19:35:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:02,006 INFO L225 Difference]: With dead ends: 411 [2018-11-28 19:35:02,007 INFO L226 Difference]: Without dead ends: 290 [2018-11-28 19:35:02,008 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:35:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-28 19:35:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-11-28 19:35:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-11-28 19:35:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-11-28 19:35:02,029 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-11-28 19:35:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:02,030 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-11-28 19:35:02,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:35:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-11-28 19:35:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:35:02,032 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:02,032 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:02,033 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:02,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:02,034 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-11-28 19:35:02,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:02,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:02,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:02,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:02,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:02,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:02,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 19:35:02,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 19:35:02,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 19:35:02,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:35:02,179 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-11-28 19:35:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:02,412 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-11-28 19:35:02,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 19:35:02,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-28 19:35:02,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:02,416 INFO L225 Difference]: With dead ends: 437 [2018-11-28 19:35:02,417 INFO L226 Difference]: Without dead ends: 309 [2018-11-28 19:35:02,417 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:35:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-11-28 19:35:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-11-28 19:35:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-11-28 19:35:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-11-28 19:35:02,435 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-11-28 19:35:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:02,435 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-11-28 19:35:02,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 19:35:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-11-28 19:35:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:35:02,437 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:02,437 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:02,438 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:02,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-11-28 19:35:02,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:02,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:02,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:02,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:02,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:02,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:35:02,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 19:35:02,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 19:35:02,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 19:35:02,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:35:02,541 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-11-28 19:35:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:02,938 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-11-28 19:35:02,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 19:35:02,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-28 19:35:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:02,942 INFO L225 Difference]: With dead ends: 456 [2018-11-28 19:35:02,942 INFO L226 Difference]: Without dead ends: 319 [2018-11-28 19:35:02,942 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:35:02,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-11-28 19:35:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-11-28 19:35:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-28 19:35:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-11-28 19:35:02,956 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-11-28 19:35:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:02,957 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-11-28 19:35:02,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 19:35:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-11-28 19:35:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 19:35:02,959 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:02,959 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 19:35:02,959 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:02,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:02,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-11-28 19:35:02,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:02,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:02,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:02,964 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:02,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:03,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:03,433 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-28 19:35:03,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:03,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:03,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:03,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 19:35:03,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 19:35:03,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 19:35:03,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:35:03,695 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 8 states. [2018-11-28 19:35:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:03,996 INFO L93 Difference]: Finished difference Result 466 states and 1115 transitions. [2018-11-28 19:35:03,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 19:35:03,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-28 19:35:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:04,002 INFO L225 Difference]: With dead ends: 466 [2018-11-28 19:35:04,003 INFO L226 Difference]: Without dead ends: 335 [2018-11-28 19:35:04,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-28 19:35:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-11-28 19:35:04,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 300. [2018-11-28 19:35:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-11-28 19:35:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 734 transitions. [2018-11-28 19:35:04,022 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 734 transitions. Word has length 29 [2018-11-28 19:35:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:04,022 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 734 transitions. [2018-11-28 19:35:04,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 19:35:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 734 transitions. [2018-11-28 19:35:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 19:35:04,034 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:04,035 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 19:35:04,035 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:04,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:04,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-11-28 19:35:04,036 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:04,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:04,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:04,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:04,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:04,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:04,256 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-28 19:35:04,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:04,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:04,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:04,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 19:35:04,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 19:35:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 19:35:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:35:04,401 INFO L87 Difference]: Start difference. First operand 300 states and 734 transitions. Second operand 8 states. [2018-11-28 19:35:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:04,594 INFO L93 Difference]: Finished difference Result 482 states and 1147 transitions. [2018-11-28 19:35:04,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 19:35:04,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-28 19:35:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:04,603 INFO L225 Difference]: With dead ends: 482 [2018-11-28 19:35:04,603 INFO L226 Difference]: Without dead ends: 351 [2018-11-28 19:35:04,604 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-11-28 19:35:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-11-28 19:35:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-11-28 19:35:04,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-11-28 19:35:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-11-28 19:35:04,619 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-11-28 19:35:04,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:04,621 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-11-28 19:35:04,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 19:35:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-11-28 19:35:04,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 19:35:04,628 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:04,628 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 19:35:04,628 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:04,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:04,629 INFO L82 PathProgramCache]: Analyzing trace with hash -460714038, now seen corresponding path program 1 times [2018-11-28 19:35:04,629 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:04,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:04,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:04,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:04,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:04,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:04,859 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:04,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:04,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:05,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:05,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 19:35:05,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 19:35:05,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 19:35:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-28 19:35:05,007 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 9 states. [2018-11-28 19:35:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:05,202 INFO L93 Difference]: Finished difference Result 498 states and 1179 transitions. [2018-11-28 19:35:05,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 19:35:05,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-11-28 19:35:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:05,205 INFO L225 Difference]: With dead ends: 498 [2018-11-28 19:35:05,206 INFO L226 Difference]: Without dead ends: 367 [2018-11-28 19:35:05,206 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:35:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-11-28 19:35:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 316. [2018-11-28 19:35:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-11-28 19:35:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 766 transitions. [2018-11-28 19:35:05,217 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 766 transitions. Word has length 33 [2018-11-28 19:35:05,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:05,217 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 766 transitions. [2018-11-28 19:35:05,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 19:35:05,217 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 766 transitions. [2018-11-28 19:35:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 19:35:05,219 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:05,219 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-11-28 19:35:05,219 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:05,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1110322378, now seen corresponding path program 2 times [2018-11-28 19:35:05,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:05,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:05,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:05,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:05,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:05,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:05,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-28 19:35:05,666 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 19:35:05,686 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 19:35:05,687 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:05,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:05,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:05,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 19:35:05,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 19:35:05,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 19:35:05,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-28 19:35:05,841 INFO L87 Difference]: Start difference. First operand 316 states and 766 transitions. Second operand 9 states. [2018-11-28 19:35:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:06,004 INFO L93 Difference]: Finished difference Result 514 states and 1211 transitions. [2018-11-28 19:35:06,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 19:35:06,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-11-28 19:35:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:06,007 INFO L225 Difference]: With dead ends: 514 [2018-11-28 19:35:06,008 INFO L226 Difference]: Without dead ends: 383 [2018-11-28 19:35:06,008 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:35:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-11-28 19:35:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-11-28 19:35:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-28 19:35:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 900 transitions. [2018-11-28 19:35:06,020 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 900 transitions. Word has length 33 [2018-11-28 19:35:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:06,023 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 900 transitions. [2018-11-28 19:35:06,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 19:35:06,023 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 900 transitions. [2018-11-28 19:35:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 19:35:06,024 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:06,024 INFO L402 BasicCegarLoop]: trace histogram [3, 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] [2018-11-28 19:35:06,026 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:06,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:06,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2061178471, now seen corresponding path program 3 times [2018-11-28 19:35:06,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:06,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:06,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:06,033 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:06,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:06,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:06,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-28 19:35:06,265 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 19:35:06,301 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 19:35:06,301 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:06,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:06,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:06,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 19:35:06,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 19:35:06,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 19:35:06,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-28 19:35:06,362 INFO L87 Difference]: Start difference. First operand 383 states and 900 transitions. Second operand 10 states. [2018-11-28 19:35:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:06,579 INFO L93 Difference]: Finished difference Result 530 states and 1243 transitions. [2018-11-28 19:35:06,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 19:35:06,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-28 19:35:06,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:06,590 INFO L225 Difference]: With dead ends: 530 [2018-11-28 19:35:06,590 INFO L226 Difference]: Without dead ends: 399 [2018-11-28 19:35:06,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-11-28 19:35:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-11-28 19:35:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 332. [2018-11-28 19:35:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-11-28 19:35:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 798 transitions. [2018-11-28 19:35:06,603 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 798 transitions. Word has length 37 [2018-11-28 19:35:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:06,603 INFO L480 AbstractCegarLoop]: Abstraction has 332 states and 798 transitions. [2018-11-28 19:35:06,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 19:35:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 798 transitions. [2018-11-28 19:35:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 19:35:06,607 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:06,607 INFO L402 BasicCegarLoop]: trace histogram [3, 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] [2018-11-28 19:35:06,607 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:06,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:06,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1649592435, now seen corresponding path program 4 times [2018-11-28 19:35:06,608 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:06,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:06,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:06,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:06,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:06,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:06,845 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:06,861 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 19:35:06,899 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 19:35:06,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:06,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:06,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:06,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 19:35:06,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 19:35:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 19:35:06,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-28 19:35:06,951 INFO L87 Difference]: Start difference. First operand 332 states and 798 transitions. Second operand 10 states. [2018-11-28 19:35:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:07,102 INFO L93 Difference]: Finished difference Result 546 states and 1275 transitions. [2018-11-28 19:35:07,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 19:35:07,103 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-28 19:35:07,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:07,107 INFO L225 Difference]: With dead ends: 546 [2018-11-28 19:35:07,107 INFO L226 Difference]: Without dead ends: 415 [2018-11-28 19:35:07,107 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2018-11-28 19:35:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-11-28 19:35:07,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-11-28 19:35:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-11-28 19:35:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 964 transitions. [2018-11-28 19:35:07,117 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 964 transitions. Word has length 37 [2018-11-28 19:35:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:07,117 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 964 transitions. [2018-11-28 19:35:07,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 19:35:07,117 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 964 transitions. [2018-11-28 19:35:07,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 19:35:07,118 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:07,118 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:07,119 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:07,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:07,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2086800042, now seen corresponding path program 5 times [2018-11-28 19:35:07,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:07,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:07,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:07,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:07,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:07,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:07,309 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:07,327 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 19:35:07,377 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2018-11-28 19:35:07,377 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:07,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:07,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:07,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 19:35:07,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 19:35:07,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 19:35:07,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-28 19:35:07,433 INFO L87 Difference]: Start difference. First operand 415 states and 964 transitions. Second operand 11 states. [2018-11-28 19:35:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:07,728 INFO L93 Difference]: Finished difference Result 562 states and 1307 transitions. [2018-11-28 19:35:07,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 19:35:07,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-11-28 19:35:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:07,731 INFO L225 Difference]: With dead ends: 562 [2018-11-28 19:35:07,732 INFO L226 Difference]: Without dead ends: 431 [2018-11-28 19:35:07,733 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-11-28 19:35:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-11-28 19:35:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 348. [2018-11-28 19:35:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-11-28 19:35:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 830 transitions. [2018-11-28 19:35:07,741 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 830 transitions. Word has length 41 [2018-11-28 19:35:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:07,743 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 830 transitions. [2018-11-28 19:35:07,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 19:35:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 830 transitions. [2018-11-28 19:35:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 19:35:07,744 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:07,745 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:07,745 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:07,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:07,745 INFO L82 PathProgramCache]: Analyzing trace with hash 449750186, now seen corresponding path program 6 times [2018-11-28 19:35:07,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:07,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:07,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:07,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:07,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:07,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:07,924 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:07,936 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 19:35:07,971 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2018-11-28 19:35:07,971 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:07,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:08,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:08,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 19:35:08,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 19:35:08,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 19:35:08,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-28 19:35:08,034 INFO L87 Difference]: Start difference. First operand 348 states and 830 transitions. Second operand 11 states. [2018-11-28 19:35:08,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:08,270 INFO L93 Difference]: Finished difference Result 578 states and 1339 transitions. [2018-11-28 19:35:08,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 19:35:08,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-11-28 19:35:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:08,273 INFO L225 Difference]: With dead ends: 578 [2018-11-28 19:35:08,273 INFO L226 Difference]: Without dead ends: 447 [2018-11-28 19:35:08,274 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-11-28 19:35:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-11-28 19:35:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-11-28 19:35:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-11-28 19:35:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-11-28 19:35:08,286 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 41 [2018-11-28 19:35:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:08,286 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-11-28 19:35:08,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 19:35:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-11-28 19:35:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 19:35:08,287 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:08,287 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2018-11-28 19:35:08,288 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:08,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash 511353159, now seen corresponding path program 7 times [2018-11-28 19:35:08,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:08,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:08,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:08,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:08,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:08,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:08,589 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:08,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:08,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:08,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:08,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-28 19:35:08,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 19:35:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 19:35:08,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 19:35:08,705 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 12 states. [2018-11-28 19:35:09,113 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 19:35:09,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:09,263 INFO L93 Difference]: Finished difference Result 594 states and 1371 transitions. [2018-11-28 19:35:09,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 19:35:09,263 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2018-11-28 19:35:09,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:09,266 INFO L225 Difference]: With dead ends: 594 [2018-11-28 19:35:09,266 INFO L226 Difference]: Without dead ends: 463 [2018-11-28 19:35:09,268 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2018-11-28 19:35:09,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-11-28 19:35:09,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 364. [2018-11-28 19:35:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-11-28 19:35:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 862 transitions. [2018-11-28 19:35:09,276 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 862 transitions. Word has length 45 [2018-11-28 19:35:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:09,276 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 862 transitions. [2018-11-28 19:35:09,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 19:35:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 862 transitions. [2018-11-28 19:35:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 19:35:09,277 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:09,277 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2018-11-28 19:35:09,280 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:09,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1081163923, now seen corresponding path program 8 times [2018-11-28 19:35:09,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:09,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:09,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:09,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:09,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:09,814 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:09,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:09,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:09,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 19:35:09,873 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 19:35:09,873 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:09,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:09,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:09,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-28 19:35:09,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 19:35:09,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 19:35:09,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 19:35:09,994 INFO L87 Difference]: Start difference. First operand 364 states and 862 transitions. Second operand 12 states. [2018-11-28 19:35:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:10,209 INFO L93 Difference]: Finished difference Result 610 states and 1403 transitions. [2018-11-28 19:35:10,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 19:35:10,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2018-11-28 19:35:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:10,213 INFO L225 Difference]: With dead ends: 610 [2018-11-28 19:35:10,213 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 19:35:10,214 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-11-28 19:35:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 19:35:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 19:35:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 19:35:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1092 transitions. [2018-11-28 19:35:10,227 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1092 transitions. Word has length 45 [2018-11-28 19:35:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:10,227 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 1092 transitions. [2018-11-28 19:35:10,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 19:35:10,227 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1092 transitions. [2018-11-28 19:35:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 19:35:10,230 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:10,230 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:10,230 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:10,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:10,231 INFO L82 PathProgramCache]: Analyzing trace with hash -578738806, now seen corresponding path program 9 times [2018-11-28 19:35:10,232 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:10,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:10,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:10,235 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:10,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:10,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:10,432 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:10,444 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 19:35:10,475 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 19:35:10,475 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:10,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:10,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:10,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 19:35:10,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 19:35:10,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 19:35:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-28 19:35:10,532 INFO L87 Difference]: Start difference. First operand 479 states and 1092 transitions. Second operand 13 states. [2018-11-28 19:35:10,775 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-11-28 19:35:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:10,957 INFO L93 Difference]: Finished difference Result 626 states and 1435 transitions. [2018-11-28 19:35:10,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 19:35:10,958 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-11-28 19:35:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:10,962 INFO L225 Difference]: With dead ends: 626 [2018-11-28 19:35:10,962 INFO L226 Difference]: Without dead ends: 495 [2018-11-28 19:35:10,963 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2018-11-28 19:35:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-28 19:35:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 380. [2018-11-28 19:35:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-11-28 19:35:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 894 transitions. [2018-11-28 19:35:10,972 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 894 transitions. Word has length 49 [2018-11-28 19:35:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:10,974 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 894 transitions. [2018-11-28 19:35:10,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 19:35:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 894 transitions. [2018-11-28 19:35:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 19:35:10,976 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:10,976 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:10,976 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:10,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:10,977 INFO L82 PathProgramCache]: Analyzing trace with hash -555139958, now seen corresponding path program 10 times [2018-11-28 19:35:10,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:10,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:10,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:10,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:10,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:11,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:11,141 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:11,155 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 19:35:11,176 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 19:35:11,176 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:11,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:11,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:11,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 19:35:11,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 19:35:11,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 19:35:11,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-28 19:35:11,282 INFO L87 Difference]: Start difference. First operand 380 states and 894 transitions. Second operand 13 states. [2018-11-28 19:35:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:11,589 INFO L93 Difference]: Finished difference Result 642 states and 1467 transitions. [2018-11-28 19:35:11,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 19:35:11,590 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-11-28 19:35:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:11,593 INFO L225 Difference]: With dead ends: 642 [2018-11-28 19:35:11,593 INFO L226 Difference]: Without dead ends: 511 [2018-11-28 19:35:11,594 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-11-28 19:35:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-11-28 19:35:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2018-11-28 19:35:11,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-11-28 19:35:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 1156 transitions. [2018-11-28 19:35:11,603 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 1156 transitions. Word has length 49 [2018-11-28 19:35:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:11,603 INFO L480 AbstractCegarLoop]: Abstraction has 511 states and 1156 transitions. [2018-11-28 19:35:11,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 19:35:11,605 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1156 transitions. [2018-11-28 19:35:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 19:35:11,606 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:11,607 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:11,607 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:11,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:11,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1389448231, now seen corresponding path program 11 times [2018-11-28 19:35:11,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:11,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:11,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:11,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:11,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:12,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:12,393 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:12,404 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 19:35:12,491 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-11-28 19:35:12,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:12,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:12,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:12,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-11-28 19:35:12,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 19:35:12,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 19:35:12,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:35:12,707 INFO L87 Difference]: Start difference. First operand 511 states and 1156 transitions. Second operand 14 states. [2018-11-28 19:35:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:13,018 INFO L93 Difference]: Finished difference Result 658 states and 1499 transitions. [2018-11-28 19:35:13,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 19:35:13,019 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-11-28 19:35:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:13,023 INFO L225 Difference]: With dead ends: 658 [2018-11-28 19:35:13,023 INFO L226 Difference]: Without dead ends: 527 [2018-11-28 19:35:13,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-11-28 19:35:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-11-28 19:35:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 396. [2018-11-28 19:35:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-11-28 19:35:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 926 transitions. [2018-11-28 19:35:13,040 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 926 transitions. Word has length 53 [2018-11-28 19:35:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:13,040 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 926 transitions. [2018-11-28 19:35:13,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 19:35:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 926 transitions. [2018-11-28 19:35:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 19:35:13,041 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:13,041 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:13,041 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:13,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:13,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1121609549, now seen corresponding path program 12 times [2018-11-28 19:35:13,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:13,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:13,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:13,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:13,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:13,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:13,215 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:13,234 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 19:35:13,259 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-11-28 19:35:13,259 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:13,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:13,319 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:13,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-11-28 19:35:13,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 19:35:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 19:35:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:35:13,320 INFO L87 Difference]: Start difference. First operand 396 states and 926 transitions. Second operand 14 states. [2018-11-28 19:35:13,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:13,730 INFO L93 Difference]: Finished difference Result 674 states and 1531 transitions. [2018-11-28 19:35:13,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 19:35:13,731 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-11-28 19:35:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:13,734 INFO L225 Difference]: With dead ends: 674 [2018-11-28 19:35:13,734 INFO L226 Difference]: Without dead ends: 543 [2018-11-28 19:35:13,734 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2018-11-28 19:35:13,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-11-28 19:35:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2018-11-28 19:35:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-11-28 19:35:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1220 transitions. [2018-11-28 19:35:13,743 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1220 transitions. Word has length 53 [2018-11-28 19:35:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:13,745 INFO L480 AbstractCegarLoop]: Abstraction has 543 states and 1220 transitions. [2018-11-28 19:35:13,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 19:35:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1220 transitions. [2018-11-28 19:35:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 19:35:13,746 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:13,747 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:13,748 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:13,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:13,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1590124650, now seen corresponding path program 13 times [2018-11-28 19:35:13,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:13,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:13,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:13,752 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:13,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:13,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:13,885 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:13,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:13,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:14,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:14,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-11-28 19:35:14,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 19:35:14,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 19:35:14,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-11-28 19:35:14,047 INFO L87 Difference]: Start difference. First operand 543 states and 1220 transitions. Second operand 15 states. [2018-11-28 19:35:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:14,322 INFO L93 Difference]: Finished difference Result 690 states and 1563 transitions. [2018-11-28 19:35:14,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 19:35:14,323 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-11-28 19:35:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:14,326 INFO L225 Difference]: With dead ends: 690 [2018-11-28 19:35:14,326 INFO L226 Difference]: Without dead ends: 559 [2018-11-28 19:35:14,327 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2018-11-28 19:35:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-11-28 19:35:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 412. [2018-11-28 19:35:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-11-28 19:35:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 958 transitions. [2018-11-28 19:35:14,335 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 958 transitions. Word has length 57 [2018-11-28 19:35:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:14,337 INFO L480 AbstractCegarLoop]: Abstraction has 412 states and 958 transitions. [2018-11-28 19:35:14,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 19:35:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 958 transitions. [2018-11-28 19:35:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 19:35:14,339 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:14,340 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:14,340 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:14,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:14,342 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 14 times [2018-11-28 19:35:14,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:14,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:14,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:14,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:35:14,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:14,511 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:14,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:14,512 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:14,524 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 19:35:14,544 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 19:35:14,544 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:14,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:14,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:35:14,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-11-28 19:35:14,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 19:35:14,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 19:35:14,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-11-28 19:35:14,623 INFO L87 Difference]: Start difference. First operand 412 states and 958 transitions. Second operand 15 states. [2018-11-28 19:35:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:14,923 INFO L93 Difference]: Finished difference Result 706 states and 1595 transitions. [2018-11-28 19:35:14,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 19:35:14,924 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-11-28 19:35:14,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:14,927 INFO L225 Difference]: With dead ends: 706 [2018-11-28 19:35:14,927 INFO L226 Difference]: Without dead ends: 575 [2018-11-28 19:35:14,928 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-11-28 19:35:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2018-11-28 19:35:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2018-11-28 19:35:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2018-11-28 19:35:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1284 transitions. [2018-11-28 19:35:14,939 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1284 transitions. Word has length 57 [2018-11-28 19:35:14,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:14,939 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 1284 transitions. [2018-11-28 19:35:14,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 19:35:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1284 transitions. [2018-11-28 19:35:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-28 19:35:14,943 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:14,944 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:14,944 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:14,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash -21031161, now seen corresponding path program 15 times [2018-11-28 19:35:14,944 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:14,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:14,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:14,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:14,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:15,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:15,141 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:15,153 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 19:35:15,210 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-28 19:35:15,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:15,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:15,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 19:35:15,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2018-11-28 19:35:15,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 19:35:15,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 19:35:15,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-11-28 19:35:15,257 INFO L87 Difference]: Start difference. First operand 575 states and 1284 transitions. Second operand 15 states. [2018-11-28 19:35:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:15,414 INFO L93 Difference]: Finished difference Result 1199 states and 2426 transitions. [2018-11-28 19:35:15,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 19:35:15,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2018-11-28 19:35:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:15,418 INFO L225 Difference]: With dead ends: 1199 [2018-11-28 19:35:15,419 INFO L226 Difference]: Without dead ends: 407 [2018-11-28 19:35:15,420 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2018-11-28 19:35:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-11-28 19:35:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-11-28 19:35:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-11-28 19:35:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 897 transitions. [2018-11-28 19:35:15,429 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 897 transitions. Word has length 61 [2018-11-28 19:35:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:15,429 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 897 transitions. [2018-11-28 19:35:15,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 19:35:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 897 transitions. [2018-11-28 19:35:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-28 19:35:15,432 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:35:15,433 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:35:15,434 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:35:15,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:35:15,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1418711251, now seen corresponding path program 16 times [2018-11-28 19:35:15,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:35:15,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:35:15,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:15,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:35:15,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:35:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:35:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:15,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:35:15,670 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 19:35:15,685 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 19:35:15,723 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 19:35:15,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:35:15,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:35:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:35:15,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 19:35:15,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2018-11-28 19:35:15,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 19:35:15,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 19:35:15,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-11-28 19:35:15,815 INFO L87 Difference]: Start difference. First operand 407 states and 897 transitions. Second operand 15 states. [2018-11-28 19:35:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:35:16,074 INFO L93 Difference]: Finished difference Result 563 states and 1005 transitions. [2018-11-28 19:35:16,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 19:35:16,081 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2018-11-28 19:35:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:35:16,081 INFO L225 Difference]: With dead ends: 563 [2018-11-28 19:35:16,081 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 19:35:16,082 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2018-11-28 19:35:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 19:35:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 19:35:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 19:35:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 19:35:16,083 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2018-11-28 19:35:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:35:16,083 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 19:35:16,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 19:35:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 19:35:16,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 19:35:16,091 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-28 19:35:16,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:35:16 BasicIcfg [2018-11-28 19:35:16,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 19:35:16,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 19:35:16,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 19:35:16,094 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 19:35:16,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:00" (3/4) ... [2018-11-28 19:35:16,100 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 19:35:16,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-11-28 19:35:16,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-11-28 19:35:16,114 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-28 19:35:16,114 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 19:35:16,115 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 19:35:16,164 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 19:35:16,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 19:35:16,166 INFO L168 Benchmark]: Toolchain (without parser) took 17164.37 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 322.4 MB). Free memory was 951.3 MB in the beginning and 1.2 GB in the end (delta: -243.5 MB). Peak memory consumption was 78.9 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:16,168 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 19:35:16,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:16,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 19:35:16,171 INFO L168 Benchmark]: Boogie Preprocessor took 52.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 19:35:16,171 INFO L168 Benchmark]: RCFGBuilder took 571.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:16,174 INFO L168 Benchmark]: TraceAbstraction took 15577.45 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 174.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -111.5 MB). Peak memory consumption was 63.1 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:16,175 INFO L168 Benchmark]: Witness Printer took 71.52 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 11.5 GB. [2018-11-28 19:35:16,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 821.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -167.6 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 571.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15577.45 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 174.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -111.5 MB). Peak memory consumption was 63.1 MB. Max. memory is 11.5 GB. * Witness Printer took 71.52 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. SAFE Result, 15.4s OverallTime, 22 OverallIterations, 6 TraceHistogramMax, 6.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1339 SDtfs, 4278 SDslu, 5456 SDs, 0 SdLazy, 1062 SolverSat, 471 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1172 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 738 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1711 NumberOfCodeBlocks, 1710 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 1671 ConstructedInterpolants, 0 QuantifiedInterpolants, 220155 SizeOfPredicates, 174 NumberOfNonLiveVariables, 2120 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 40 InterpolantComputations, 6 PerfectInterpolantSequences, 253/980 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...