./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread-wmm/safe019_pso.opt_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-wmm/safe019_pso.opt_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 34aa10af8102d016881d8dafbe2915ce8b073145 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:43:16,663 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 20:43:16,668 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 20:43:16,686 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 20:43:16,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 20:43:16,690 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 20:43:16,692 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 20:43:16,696 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 20:43:16,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 20:43:16,701 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 20:43:16,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 20:43:16,702 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 20:43:16,705 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 20:43:16,707 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 20:43:16,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 20:43:16,715 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 20:43:16,716 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 20:43:16,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 20:43:16,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 20:43:16,729 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 20:43:16,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 20:43:16,736 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 20:43:16,739 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 20:43:16,741 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 20:43:16,741 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 20:43:16,743 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 20:43:16,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 20:43:16,745 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 20:43:16,750 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 20:43:16,752 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 20:43:16,752 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 20:43:16,753 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 20:43:16,753 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 20:43:16,756 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 20:43:16,757 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 20:43:16,759 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 20:43:16,761 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 20:43:16,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 20:43:16,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 20:43:16,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 20:43:16,795 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 20:43:16,796 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 20:43:16,801 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 20:43:16,801 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 20:43:16,801 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 20:43:16,802 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 20:43:16,802 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 20:43:16,802 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 20:43:16,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 20:43:16,802 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 20:43:16,802 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 20:43:16,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 20:43:16,803 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 20:43:16,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 20:43:16,803 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 20:43:16,803 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 20:43:16,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 20:43:16,807 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 20:43:16,807 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 20:43:16,807 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 20:43:16,807 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 20:43:16,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 20:43:16,808 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 20:43:16,808 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 20:43:16,808 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 20:43:16,808 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 20:43:16,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 20:43:16,809 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 -> 34aa10af8102d016881d8dafbe2915ce8b073145 [2018-11-28 20:43:16,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 20:43:16,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 20:43:16,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 20:43:16,910 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 20:43:16,912 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 20:43:16,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-wmm/safe019_pso.opt_true-unreach-call.i [2018-11-28 20:43:16,983 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c270e932b/ff3790ac9c17467ea9d23bc09b26b31a/FLAG2e65c2459 [2018-11-28 20:43:17,520 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 20:43:17,521 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-wmm/safe019_pso.opt_true-unreach-call.i [2018-11-28 20:43:17,536 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c270e932b/ff3790ac9c17467ea9d23bc09b26b31a/FLAG2e65c2459 [2018-11-28 20:43:17,771 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c270e932b/ff3790ac9c17467ea9d23bc09b26b31a [2018-11-28 20:43:17,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 20:43:17,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 20:43:17,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 20:43:17,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 20:43:17,781 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 20:43:17,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:43:17" (1/1) ... [2018-11-28 20:43:17,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6552881f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:17, skipping insertion in model container [2018-11-28 20:43:17,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:43:17" (1/1) ... [2018-11-28 20:43:17,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 20:43:17,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 20:43:18,301 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 20:43:18,326 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 20:43:18,399 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 20:43:18,576 INFO L195 MainTranslator]: Completed translation [2018-11-28 20:43:18,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18 WrapperNode [2018-11-28 20:43:18,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 20:43:18,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 20:43:18,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 20:43:18,579 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 20:43:18,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 20:43:18,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 20:43:18,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 20:43:18,644 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 20:43:18,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (1/1) ... [2018-11-28 20:43:18,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 20:43:18,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 20:43:18,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 20:43:18,686 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 20:43:18,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (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 20:43:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 20:43:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 20:43:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-28 20:43:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 20:43:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-11-28 20:43:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-11-28 20:43:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-11-28 20:43:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-11-28 20:43:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-11-28 20:43:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-11-28 20:43:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-11-28 20:43:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-11-28 20:43:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-28 20:43:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 20:43:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 20:43:18,763 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 20:43:19,320 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 20:43:19,320 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 20:43:19,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:43:19 BoogieIcfgContainer [2018-11-28 20:43:19,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 20:43:19,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 20:43:19,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 20:43:19,326 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 20:43:19,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:43:17" (1/3) ... [2018-11-28 20:43:19,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2856c5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:43:19, skipping insertion in model container [2018-11-28 20:43:19,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:43:18" (2/3) ... [2018-11-28 20:43:19,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2856c5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:43:19, skipping insertion in model container [2018-11-28 20:43:19,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:43:19" (3/3) ... [2018-11-28 20:43:19,334 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt_true-unreach-call.i [2018-11-28 20:43:19,376 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,376 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,376 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,376 WARN L317 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,377 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,378 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,378 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,378 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,378 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,378 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,379 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,379 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,379 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,379 WARN L317 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,379 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,380 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,381 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,382 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,382 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,382 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,382 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,383 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,384 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,384 WARN L317 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,384 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,384 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,384 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,384 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,385 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,385 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,385 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,385 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,386 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,388 WARN L317 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,388 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,388 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,388 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,388 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,389 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,390 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 20:43:19,424 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 20:43:19,425 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 20:43:19,435 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 20:43:19,454 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 20:43:19,486 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 20:43:19,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 20:43:19,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 20:43:19,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 20:43:19,487 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 20:43:19,488 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 20:43:19,488 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 20:43:19,488 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 20:43:19,488 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 20:43:19,499 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67places, 63 transitions [2018-11-28 20:43:20,618 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13135 states. [2018-11-28 20:43:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states. [2018-11-28 20:43:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 20:43:20,656 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:20,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:20,660 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:20,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2121463999, now seen corresponding path program 1 times [2018-11-28 20:43:20,670 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:20,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:20,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:20,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 20:43:20,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:21,163 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 20:43:21,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:21,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 20:43:21,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 20:43:21,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 20:43:21,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 20:43:21,192 INFO L87 Difference]: Start difference. First operand 13135 states. Second operand 4 states. [2018-11-28 20:43:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:21,725 INFO L93 Difference]: Finished difference Result 13741 states and 55792 transitions. [2018-11-28 20:43:21,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 20:43:21,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-28 20:43:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:21,831 INFO L225 Difference]: With dead ends: 13741 [2018-11-28 20:43:21,831 INFO L226 Difference]: Without dead ends: 5628 [2018-11-28 20:43:21,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 20:43:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2018-11-28 20:43:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5628. [2018-11-28 20:43:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2018-11-28 20:43:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 22351 transitions. [2018-11-28 20:43:22,320 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 22351 transitions. Word has length 34 [2018-11-28 20:43:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:22,322 INFO L480 AbstractCegarLoop]: Abstraction has 5628 states and 22351 transitions. [2018-11-28 20:43:22,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 20:43:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 22351 transitions. [2018-11-28 20:43:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 20:43:22,331 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:22,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:22,331 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:22,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:22,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1567952221, now seen corresponding path program 1 times [2018-11-28 20:43:22,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:22,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:22,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:22,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 20:43:22,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:22,661 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 20:43:22,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:22,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 20:43:22,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 20:43:22,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 20:43:22,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 20:43:22,666 INFO L87 Difference]: Start difference. First operand 5628 states and 22351 transitions. Second operand 5 states. [2018-11-28 20:43:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:23,204 INFO L93 Difference]: Finished difference Result 6140 states and 23831 transitions. [2018-11-28 20:43:23,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 20:43:23,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 20:43:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:23,254 INFO L225 Difference]: With dead ends: 6140 [2018-11-28 20:43:23,254 INFO L226 Difference]: Without dead ends: 5516 [2018-11-28 20:43:23,255 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 20:43:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2018-11-28 20:43:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5516. [2018-11-28 20:43:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2018-11-28 20:43:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 21819 transitions. [2018-11-28 20:43:23,457 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 21819 transitions. Word has length 35 [2018-11-28 20:43:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:23,458 INFO L480 AbstractCegarLoop]: Abstraction has 5516 states and 21819 transitions. [2018-11-28 20:43:23,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 20:43:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 21819 transitions. [2018-11-28 20:43:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 20:43:23,467 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:23,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:23,467 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:23,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:23,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1714687443, now seen corresponding path program 1 times [2018-11-28 20:43:23,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:23,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:23,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:23,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 20:43:23,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:23,642 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 20:43:23,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:23,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 20:43:23,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 20:43:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 20:43:23,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 20:43:23,643 INFO L87 Difference]: Start difference. First operand 5516 states and 21819 transitions. Second operand 6 states. [2018-11-28 20:43:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:23,901 INFO L93 Difference]: Finished difference Result 5452 states and 20827 transitions. [2018-11-28 20:43:23,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 20:43:23,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-11-28 20:43:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:23,942 INFO L225 Difference]: With dead ends: 5452 [2018-11-28 20:43:23,942 INFO L226 Difference]: Without dead ends: 4844 [2018-11-28 20:43:23,943 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-28 20:43:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2018-11-28 20:43:24,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2018-11-28 20:43:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2018-11-28 20:43:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 18795 transitions. [2018-11-28 20:43:24,104 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 18795 transitions. Word has length 36 [2018-11-28 20:43:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:24,105 INFO L480 AbstractCegarLoop]: Abstraction has 4844 states and 18795 transitions. [2018-11-28 20:43:24,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 20:43:24,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 18795 transitions. [2018-11-28 20:43:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 20:43:24,114 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:24,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:24,114 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:24,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:24,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1780063403, now seen corresponding path program 1 times [2018-11-28 20:43:24,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:24,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:24,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:24,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 20:43:24,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:24,293 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 20:43:24,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:24,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 20:43:24,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 20:43:24,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 20:43:24,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 20:43:24,295 INFO L87 Difference]: Start difference. First operand 4844 states and 18795 transitions. Second operand 7 states. [2018-11-28 20:43:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:24,839 INFO L93 Difference]: Finished difference Result 3564 states and 13035 transitions. [2018-11-28 20:43:24,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 20:43:24,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2018-11-28 20:43:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:24,857 INFO L225 Difference]: With dead ends: 3564 [2018-11-28 20:43:24,857 INFO L226 Difference]: Without dead ends: 3052 [2018-11-28 20:43:24,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-28 20:43:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2018-11-28 20:43:24,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3052. [2018-11-28 20:43:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2018-11-28 20:43:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 11179 transitions. [2018-11-28 20:43:24,984 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 11179 transitions. Word has length 37 [2018-11-28 20:43:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:24,987 INFO L480 AbstractCegarLoop]: Abstraction has 3052 states and 11179 transitions. [2018-11-28 20:43:24,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 20:43:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 11179 transitions. [2018-11-28 20:43:24,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 20:43:24,996 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:24,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:24,996 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:24,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:24,997 INFO L82 PathProgramCache]: Analyzing trace with hash 2106942385, now seen corresponding path program 1 times [2018-11-28 20:43:24,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:24,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:25,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:25,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 20:43:25,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:25,177 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 20:43:25,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:25,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 20:43:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 20:43:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 20:43:25,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 20:43:25,179 INFO L87 Difference]: Start difference. First operand 3052 states and 11179 transitions. Second operand 6 states. [2018-11-28 20:43:25,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:25,337 INFO L93 Difference]: Finished difference Result 4732 states and 17539 transitions. [2018-11-28 20:43:25,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 20:43:25,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-11-28 20:43:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:25,351 INFO L225 Difference]: With dead ends: 4732 [2018-11-28 20:43:25,351 INFO L226 Difference]: Without dead ends: 2952 [2018-11-28 20:43:25,352 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 20:43:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2018-11-28 20:43:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2952. [2018-11-28 20:43:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2952 states. [2018-11-28 20:43:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 10819 transitions. [2018-11-28 20:43:25,588 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 10819 transitions. Word has length 38 [2018-11-28 20:43:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:25,589 INFO L480 AbstractCegarLoop]: Abstraction has 2952 states and 10819 transitions. [2018-11-28 20:43:25,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 20:43:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 10819 transitions. [2018-11-28 20:43:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 20:43:25,595 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:25,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:25,596 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:25,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:25,597 INFO L82 PathProgramCache]: Analyzing trace with hash -871867607, now seen corresponding path program 2 times [2018-11-28 20:43:25,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:25,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:25,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:25,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 20:43:25,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:25,763 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 20:43:25,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:25,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 20:43:25,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 20:43:25,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 20:43:25,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 20:43:25,766 INFO L87 Difference]: Start difference. First operand 2952 states and 10819 transitions. Second operand 7 states. [2018-11-28 20:43:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:25,964 INFO L93 Difference]: Finished difference Result 4952 states and 18235 transitions. [2018-11-28 20:43:25,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 20:43:25,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-28 20:43:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:25,979 INFO L225 Difference]: With dead ends: 4952 [2018-11-28 20:43:25,979 INFO L226 Difference]: Without dead ends: 2756 [2018-11-28 20:43:25,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-28 20:43:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2018-11-28 20:43:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2018-11-28 20:43:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2018-11-28 20:43:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 10203 transitions. [2018-11-28 20:43:26,063 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 10203 transitions. Word has length 38 [2018-11-28 20:43:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:26,063 INFO L480 AbstractCegarLoop]: Abstraction has 2756 states and 10203 transitions. [2018-11-28 20:43:26,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 20:43:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 10203 transitions. [2018-11-28 20:43:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 20:43:26,068 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:26,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:26,068 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:26,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:26,069 INFO L82 PathProgramCache]: Analyzing trace with hash -894920831, now seen corresponding path program 3 times [2018-11-28 20:43:26,069 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:26,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:26,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:26,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 20:43:26,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:26,230 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 20:43:26,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:26,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 20:43:26,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 20:43:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 20:43:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 20:43:26,232 INFO L87 Difference]: Start difference. First operand 2756 states and 10203 transitions. Second operand 7 states. [2018-11-28 20:43:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:26,435 INFO L93 Difference]: Finished difference Result 4612 states and 17131 transitions. [2018-11-28 20:43:26,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 20:43:26,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-28 20:43:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:26,445 INFO L225 Difference]: With dead ends: 4612 [2018-11-28 20:43:26,445 INFO L226 Difference]: Without dead ends: 2576 [2018-11-28 20:43:26,446 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-28 20:43:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2018-11-28 20:43:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2576. [2018-11-28 20:43:26,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2576 states. [2018-11-28 20:43:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2576 states to 2576 states and 9591 transitions. [2018-11-28 20:43:26,512 INFO L78 Accepts]: Start accepts. Automaton has 2576 states and 9591 transitions. Word has length 38 [2018-11-28 20:43:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:26,512 INFO L480 AbstractCegarLoop]: Abstraction has 2576 states and 9591 transitions. [2018-11-28 20:43:26,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 20:43:26,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2576 states and 9591 transitions. [2018-11-28 20:43:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-28 20:43:26,516 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 20:43:26,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 20:43:26,516 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 20:43:26,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 20:43:26,516 INFO L82 PathProgramCache]: Analyzing trace with hash 358548407, now seen corresponding path program 4 times [2018-11-28 20:43:26,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 20:43:26,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 20:43:26,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:26,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 20:43:26,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 20:43:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 20:43:26,839 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 20:43:26,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 20:43:26,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 20:43:26,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 20:43:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 20:43:26,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 20:43:26,841 INFO L87 Difference]: Start difference. First operand 2576 states and 9591 transitions. Second operand 7 states. [2018-11-28 20:43:26,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 20:43:26,970 INFO L93 Difference]: Finished difference Result 2064 states and 7543 transitions. [2018-11-28 20:43:26,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 20:43:26,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-11-28 20:43:26,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 20:43:26,971 INFO L225 Difference]: With dead ends: 2064 [2018-11-28 20:43:26,971 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 20:43:26,971 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-28 20:43:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 20:43:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 20:43:26,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 20:43:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 20:43:26,972 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-11-28 20:43:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 20:43:26,972 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 20:43:26,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 20:43:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 20:43:26,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 20:43:26,976 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-28 20:43:26,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:43:26 BasicIcfg [2018-11-28 20:43:26,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 20:43:26,978 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 20:43:26,978 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 20:43:26,979 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 20:43:26,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:43:19" (3/4) ... [2018-11-28 20:43:26,983 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 20:43:26,991 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-11-28 20:43:26,992 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-11-28 20:43:26,992 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-11-28 20:43:26,992 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-11-28 20:43:26,997 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-28 20:43:26,997 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 20:43:27,050 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 20:43:27,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 20:43:27,051 INFO L168 Benchmark]: Toolchain (without parser) took 9275.95 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 323.5 MB). Free memory was 954.0 MB in the beginning and 1.0 GB in the end (delta: -72.4 MB). Peak memory consumption was 251.0 MB. Max. memory is 11.5 GB. [2018-11-28 20:43:27,053 INFO L168 Benchmark]: CDTParser took 0.41 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 20:43:27,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 800.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. [2018-11-28 20:43:27,055 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.96 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 20:43:27,055 INFO L168 Benchmark]: Boogie Preprocessor took 41.26 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 20:43:27,056 INFO L168 Benchmark]: RCFGBuilder took 635.75 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-11-28 20:43:27,056 INFO L168 Benchmark]: TraceAbstraction took 7655.97 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.4 MB). Peak memory consumption was 251.6 MB. Max. memory is 11.5 GB. [2018-11-28 20:43:27,057 INFO L168 Benchmark]: Witness Printer took 71.83 ms. Allocated memory is still 1.4 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 20:43:27,062 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 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 800.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 954.0 MB in the beginning and 1.1 GB in the end (delta: -162.5 MB). Peak memory consumption was 44.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.96 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 41.26 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 635.75 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7655.97 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 187.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.4 MB). Peak memory consumption was 251.6 MB. Max. memory is 11.5 GB. * Witness Printer took 71.83 ms. Allocated memory is still 1.4 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 9 procedures, 87 locations, 1 error locations. SAFE Result, 7.5s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 566 SDtfs, 883 SDslu, 1515 SDs, 0 SdLazy, 173 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13135occurred 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: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 25834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...