./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread-ext/15_dekker_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa 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-ext/15_dekker_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 7d18463df1ccecb78ef9c884b34855756d40cf97 .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 17:30:59,759 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 17:30:59,761 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 17:30:59,775 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 17:30:59,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 17:30:59,776 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 17:30:59,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 17:30:59,779 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 17:30:59,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 17:30:59,781 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 17:30:59,782 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 17:30:59,782 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 17:30:59,783 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 17:30:59,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 17:30:59,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 17:30:59,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 17:30:59,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 17:30:59,789 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 17:30:59,791 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 17:30:59,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 17:30:59,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 17:30:59,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 17:30:59,797 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 17:30:59,798 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 17:30:59,798 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 17:30:59,799 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 17:30:59,800 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 17:30:59,801 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 17:30:59,802 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 17:30:59,803 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 17:30:59,803 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 17:30:59,804 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 17:30:59,804 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 17:30:59,804 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 17:30:59,805 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 17:30:59,806 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 17:30:59,806 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 17:30:59,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 17:30:59,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 17:30:59,823 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 17:30:59,823 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 17:30:59,824 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 17:30:59,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 17:30:59,824 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 17:30:59,824 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 17:30:59,824 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 17:30:59,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 17:30:59,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 17:30:59,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 17:30:59,825 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 17:30:59,825 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 17:30:59,825 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 17:30:59,826 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 17:30:59,826 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 17:30:59,826 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 17:30:59,826 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 17:30:59,826 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 17:30:59,826 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 17:30:59,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:30:59,827 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 17:30:59,827 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 17:30:59,827 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 17:30:59,827 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 17:30:59,827 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 17:30:59,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 17:30:59,828 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 -> 7d18463df1ccecb78ef9c884b34855756d40cf97 [2018-12-31 17:30:59,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 17:30:59,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 17:30:59,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 17:30:59,881 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 17:30:59,882 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 17:30:59,882 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-ext/15_dekker_true-unreach-call.i [2018-12-31 17:30:59,941 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c208bb79b/f33b9aec507042f1adcfcee3aeda28e7/FLAG98097682a [2018-12-31 17:31:00,517 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 17:31:00,517 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-ext/15_dekker_true-unreach-call.i [2018-12-31 17:31:00,535 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c208bb79b/f33b9aec507042f1adcfcee3aeda28e7/FLAG98097682a [2018-12-31 17:31:00,754 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c208bb79b/f33b9aec507042f1adcfcee3aeda28e7 [2018-12-31 17:31:00,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 17:31:00,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 17:31:00,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 17:31:00,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 17:31:00,765 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 17:31:00,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:31:00" (1/1) ... [2018-12-31 17:31:00,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ff8dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:00, skipping insertion in model container [2018-12-31 17:31:00,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:31:00" (1/1) ... [2018-12-31 17:31:00,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 17:31:00,820 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 17:31:01,200 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:31:01,226 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 17:31:01,374 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:31:01,454 INFO L195 MainTranslator]: Completed translation [2018-12-31 17:31:01,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01 WrapperNode [2018-12-31 17:31:01,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 17:31:01,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 17:31:01,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 17:31:01,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 17:31:01,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 17:31:01,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 17:31:01,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 17:31:01,515 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 17:31:01,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 17:31:01,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 17:31:01,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 17:31:01,559 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 17:31:01,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (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 [2018-12-31 17:31:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-12-31 17:31:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-12-31 17:31:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 17:31:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 17:31:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 17:31:01,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 17:31:01,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 17:31:01,621 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-31 17:31:02,107 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 17:31:02,107 INFO L280 CfgBuilder]: Removed 10 assue(true) statements. [2018-12-31 17:31:02,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:31:02 BoogieIcfgContainer [2018-12-31 17:31:02,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 17:31:02,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 17:31:02,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 17:31:02,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 17:31:02,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:31:00" (1/3) ... [2018-12-31 17:31:02,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5a5420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:31:02, skipping insertion in model container [2018-12-31 17:31:02,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01" (2/3) ... [2018-12-31 17:31:02,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5a5420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:31:02, skipping insertion in model container [2018-12-31 17:31:02,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:31:02" (3/3) ... [2018-12-31 17:31:02,116 INFO L112 eAbstractionObserver]: Analyzing ICFG 15_dekker_true-unreach-call.i [2018-12-31 17:31:02,147 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:02,147 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:02,147 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:02,147 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:02,148 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:02,149 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:02,157 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-31 17:31:02,158 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 17:31:02,166 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-31 17:31:02,183 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-31 17:31:02,210 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 17:31:02,211 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 17:31:02,211 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 17:31:02,211 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 17:31:02,211 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 17:31:02,212 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 17:31:02,212 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 17:31:02,212 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 17:31:02,213 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 17:31:02,223 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53places, 63 transitions [2018-12-31 17:31:02,257 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 427 states. [2018-12-31 17:31:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states. [2018-12-31 17:31:02,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-31 17:31:02,269 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:02,271 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:31:02,273 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:02,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1543566699, now seen corresponding path program 1 times [2018-12-31 17:31:02,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:02,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:02,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:02,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:31:02,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:02,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 17:31:02,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 17:31:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 17:31:02,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 17:31:02,465 INFO L87 Difference]: Start difference. First operand 427 states. Second operand 2 states. [2018-12-31 17:31:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:02,503 INFO L93 Difference]: Finished difference Result 427 states and 927 transitions. [2018-12-31 17:31:02,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 17:31:02,505 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-31 17:31:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:02,522 INFO L225 Difference]: With dead ends: 427 [2018-12-31 17:31:02,523 INFO L226 Difference]: Without dead ends: 372 [2018-12-31 17:31:02,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 17:31:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2018-12-31 17:31:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2018-12-31 17:31:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-12-31 17:31:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 817 transitions. [2018-12-31 17:31:02,603 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 817 transitions. Word has length 17 [2018-12-31 17:31:02,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:02,604 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 817 transitions. [2018-12-31 17:31:02,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 17:31:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 817 transitions. [2018-12-31 17:31:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-31 17:31:02,606 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:02,606 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:31:02,606 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:02,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1543596490, now seen corresponding path program 1 times [2018-12-31 17:31:02,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:02,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:02,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:02,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:31:02,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:02,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:31:02,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:31:02,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:31:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:02,732 INFO L87 Difference]: Start difference. First operand 372 states and 817 transitions. Second operand 3 states. [2018-12-31 17:31:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:02,823 INFO L93 Difference]: Finished difference Result 377 states and 800 transitions. [2018-12-31 17:31:02,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:31:02,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-12-31 17:31:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:02,827 INFO L225 Difference]: With dead ends: 377 [2018-12-31 17:31:02,828 INFO L226 Difference]: Without dead ends: 278 [2018-12-31 17:31:02,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-12-31 17:31:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 263. [2018-12-31 17:31:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-12-31 17:31:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 559 transitions. [2018-12-31 17:31:02,848 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 559 transitions. Word has length 17 [2018-12-31 17:31:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:02,849 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 559 transitions. [2018-12-31 17:31:02,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:31:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 559 transitions. [2018-12-31 17:31:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-31 17:31:02,852 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:02,852 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] [2018-12-31 17:31:02,852 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 995652780, now seen corresponding path program 1 times [2018-12-31 17:31:02,854 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:02,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:02,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:02,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:31:02,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:02,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:31:02,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:31:02,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:31:02,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:02,917 INFO L87 Difference]: Start difference. First operand 263 states and 559 transitions. Second operand 3 states. [2018-12-31 17:31:02,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:02,960 INFO L93 Difference]: Finished difference Result 246 states and 512 transitions. [2018-12-31 17:31:02,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:31:02,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-31 17:31:02,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:02,965 INFO L225 Difference]: With dead ends: 246 [2018-12-31 17:31:02,965 INFO L226 Difference]: Without dead ends: 181 [2018-12-31 17:31:02,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-12-31 17:31:02,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-12-31 17:31:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-12-31 17:31:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 373 transitions. [2018-12-31 17:31:02,976 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 373 transitions. Word has length 21 [2018-12-31 17:31:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:02,976 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 373 transitions. [2018-12-31 17:31:02,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:31:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 373 transitions. [2018-12-31 17:31:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:31:02,979 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:02,980 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] [2018-12-31 17:31:02,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:02,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1294877620, now seen corresponding path program 1 times [2018-12-31 17:31:02,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:02,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:02,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:02,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:02,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:31:03,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:03,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:31:03,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:31:03,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:31:03,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:03,076 INFO L87 Difference]: Start difference. First operand 181 states and 373 transitions. Second operand 3 states. [2018-12-31 17:31:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:03,150 INFO L93 Difference]: Finished difference Result 181 states and 368 transitions. [2018-12-31 17:31:03,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:31:03,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-31 17:31:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:03,153 INFO L225 Difference]: With dead ends: 181 [2018-12-31 17:31:03,153 INFO L226 Difference]: Without dead ends: 159 [2018-12-31 17:31:03,153 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-12-31 17:31:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-12-31 17:31:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-12-31 17:31:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 320 transitions. [2018-12-31 17:31:03,162 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 320 transitions. Word has length 25 [2018-12-31 17:31:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:03,163 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 320 transitions. [2018-12-31 17:31:03,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:31:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 320 transitions. [2018-12-31 17:31:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:31:03,164 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:03,165 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] [2018-12-31 17:31:03,166 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:03,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1814740049, now seen corresponding path program 1 times [2018-12-31 17:31:03,166 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:03,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:03,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:03,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:31:03,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:03,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:31:03,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:31:03,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:31:03,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:03,217 INFO L87 Difference]: Start difference. First operand 159 states and 320 transitions. Second operand 3 states. [2018-12-31 17:31:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:03,290 INFO L93 Difference]: Finished difference Result 102 states and 230 transitions. [2018-12-31 17:31:03,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:31:03,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-12-31 17:31:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:03,292 INFO L225 Difference]: With dead ends: 102 [2018-12-31 17:31:03,292 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 17:31:03,292 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 17:31:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 17:31:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 17:31:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 17:31:03,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-12-31 17:31:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:03,295 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 17:31:03,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:31:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 17:31:03,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 17:31:03,300 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-31 17:31:03,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:31:03 BasicIcfg [2018-12-31 17:31:03,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 17:31:03,302 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 17:31:03,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 17:31:03,303 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 17:31:03,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:31:02" (3/4) ... [2018-12-31 17:31:03,308 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 17:31:03,316 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-12-31 17:31:03,322 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-31 17:31:03,322 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-31 17:31:03,373 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 17:31:03,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 17:31:03,374 INFO L168 Benchmark]: Toolchain (without parser) took 2615.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -74.8 MB). Peak memory consumption was 67.3 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:03,376 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-12-31 17:31:03,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:03,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.09 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. [2018-12-31 17:31:03,379 INFO L168 Benchmark]: Boogie Preprocessor took 44.43 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. [2018-12-31 17:31:03,379 INFO L168 Benchmark]: RCFGBuilder took 548.93 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:03,380 INFO L168 Benchmark]: TraceAbstraction took 1192.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:03,380 INFO L168 Benchmark]: Witness Printer took 70.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:31:03,385 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 694.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.09 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 44.43 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 548.93 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1192.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 61.1 MB). Peak memory consumption was 61.1 MB. Max. memory is 11.5 GB. * Witness Printer took 70.74 ms. Allocated memory is still 1.2 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: 648]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 663]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 648]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 3 error locations. SAFE Result, 1.1s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 307 SDtfs, 114 SDslu, 125 SDs, 0 SdLazy, 24 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...