./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread-ext/16_peterson_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/16_peterson_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 a6a89f9f46b1412575f1266b3402a81524b5e7b5 .............................................................................................................................................................................................................................................................................................................................................................................................................. 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 17:31:00,816 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 17:31:00,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 17:31:00,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 17:31:00,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 17:31:00,839 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 17:31:00,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 17:31:00,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 17:31:00,851 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 17:31:00,852 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 17:31:00,853 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 17:31:00,853 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 17:31:00,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 17:31:00,855 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 17:31:00,856 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 17:31:00,857 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 17:31:00,858 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 17:31:00,860 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 17:31:00,861 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 17:31:00,863 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 17:31:00,864 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 17:31:00,865 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 17:31:00,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 17:31:00,868 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 17:31:00,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 17:31:00,869 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 17:31:00,870 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 17:31:00,871 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 17:31:00,872 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 17:31:00,873 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 17:31:00,873 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 17:31:00,874 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 17:31:00,874 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 17:31:00,874 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 17:31:00,875 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 17:31:00,876 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 17:31:00,876 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 17:31:00,892 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 17:31:00,892 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 17:31:00,893 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 17:31:00,893 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 17:31:00,894 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 17:31:00,894 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 17:31:00,894 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 17:31:00,894 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 17:31:00,894 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 17:31:00,895 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 17:31:00,895 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 17:31:00,895 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 17:31:00,895 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 17:31:00,895 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 17:31:00,895 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 17:31:00,896 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 17:31:00,896 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 17:31:00,896 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 17:31:00,896 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 17:31:00,897 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 17:31:00,897 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 17:31:00,897 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:31:00,897 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 17:31:00,897 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 17:31:00,897 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 17:31:00,898 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 17:31:00,898 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 17:31:00,898 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 17:31:00,898 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 -> a6a89f9f46b1412575f1266b3402a81524b5e7b5 [2018-12-31 17:31:00,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 17:31:00,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 17:31:00,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 17:31:00,968 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 17:31:00,968 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 17:31:00,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread-ext/16_peterson_true-unreach-call.i [2018-12-31 17:31:01,031 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21683b5e5/2a5cb1087b6f408aae293d9e1ea56704/FLAG600200e6c [2018-12-31 17:31:01,543 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 17:31:01,544 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread-ext/16_peterson_true-unreach-call.i [2018-12-31 17:31:01,560 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21683b5e5/2a5cb1087b6f408aae293d9e1ea56704/FLAG600200e6c [2018-12-31 17:31:01,835 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21683b5e5/2a5cb1087b6f408aae293d9e1ea56704 [2018-12-31 17:31:01,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 17:31:01,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 17:31:01,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 17:31:01,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 17:31:01,846 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 17:31:01,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3fa4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:01, skipping insertion in model container [2018-12-31 17:31:01,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:31:01" (1/1) ... [2018-12-31 17:31:01,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 17:31:01,922 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 17:31:02,342 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:31:02,359 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 17:31:02,493 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:31:02,605 INFO L195 MainTranslator]: Completed translation [2018-12-31 17:31:02,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02 WrapperNode [2018-12-31 17:31:02,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 17:31:02,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 17:31:02,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 17:31:02,608 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 17:31:02,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 17:31:02,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 17:31:02,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 17:31:02,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 17:31:02,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (1/1) ... [2018-12-31 17:31:02,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 17:31:02,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 17:31:02,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 17:31:02,728 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 17:31:02,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (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 17:31:02,798 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-12-31 17:31:02,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-12-31 17:31:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 17:31:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 17:31:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 17:31:02,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 17:31:02,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 17:31:02,803 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 17:31:03,240 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 17:31:03,240 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-31 17:31:03,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:31:03 BoogieIcfgContainer [2018-12-31 17:31:03,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 17:31:03,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 17:31:03,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 17:31:03,246 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 17:31:03,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:31:01" (1/3) ... [2018-12-31 17:31:03,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1909e58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:31:03, skipping insertion in model container [2018-12-31 17:31:03,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:31:02" (2/3) ... [2018-12-31 17:31:03,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1909e58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:31:03, skipping insertion in model container [2018-12-31 17:31:03,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:31:03" (3/3) ... [2018-12-31 17:31:03,251 INFO L112 eAbstractionObserver]: Analyzing ICFG 16_peterson_true-unreach-call.i [2018-12-31 17:31:03,286 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:03,286 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:03,286 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:03,286 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:03,287 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:03,287 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:31:03,306 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-31 17:31:03,307 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 17:31:03,317 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-31 17:31:03,334 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-31 17:31:03,358 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 17:31:03,359 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 17:31:03,359 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 17:31:03,359 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 17:31:03,360 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 17:31:03,360 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 17:31:03,360 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 17:31:03,360 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 17:31:03,360 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 17:31:03,370 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45places, 49 transitions [2018-12-31 17:31:03,400 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 275 states. [2018-12-31 17:31:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states. [2018-12-31 17:31:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 17:31:03,412 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:03,413 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:31:03,416 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:03,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:03,422 INFO L82 PathProgramCache]: Analyzing trace with hash 929769553, now seen corresponding path program 1 times [2018-12-31 17:31:03,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:03,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:03,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:03,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:03,578 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 17:31:03,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:03,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 17:31:03,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 17:31:03,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 17:31:03,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 17:31:03,602 INFO L87 Difference]: Start difference. First operand 275 states. Second operand 2 states. [2018-12-31 17:31:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:03,631 INFO L93 Difference]: Finished difference Result 275 states and 539 transitions. [2018-12-31 17:31:03,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 17:31:03,633 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-12-31 17:31:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:03,647 INFO L225 Difference]: With dead ends: 275 [2018-12-31 17:31:03,647 INFO L226 Difference]: Without dead ends: 235 [2018-12-31 17:31:03,649 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 17:31:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-12-31 17:31:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-12-31 17:31:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-12-31 17:31:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 459 transitions. [2018-12-31 17:31:03,712 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 459 transitions. Word has length 18 [2018-12-31 17:31:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:03,713 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 459 transitions. [2018-12-31 17:31:03,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 17:31:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 459 transitions. [2018-12-31 17:31:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 17:31:03,714 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:03,715 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:31:03,715 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:03,716 INFO L82 PathProgramCache]: Analyzing trace with hash 929799344, now seen corresponding path program 1 times [2018-12-31 17:31:03,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:03,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:03,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:03,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:03,825 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 17:31:03,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:03,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:31:03,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:31:03,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:31:03,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:03,831 INFO L87 Difference]: Start difference. First operand 235 states and 459 transitions. Second operand 3 states. [2018-12-31 17:31:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:03,919 INFO L93 Difference]: Finished difference Result 242 states and 452 transitions. [2018-12-31 17:31:03,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:31:03,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-31 17:31:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:03,922 INFO L225 Difference]: With dead ends: 242 [2018-12-31 17:31:03,922 INFO L226 Difference]: Without dead ends: 182 [2018-12-31 17:31:03,923 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 17:31:03,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-12-31 17:31:03,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2018-12-31 17:31:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-12-31 17:31:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 316 transitions. [2018-12-31 17:31:03,939 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 316 transitions. Word has length 18 [2018-12-31 17:31:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:03,940 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 316 transitions. [2018-12-31 17:31:03,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:31:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 316 transitions. [2018-12-31 17:31:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-31 17:31:03,942 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:03,942 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:31:03,942 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:03,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash 145549379, now seen corresponding path program 1 times [2018-12-31 17:31:03,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:03,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:03,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:03,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:04,002 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 17:31:04,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:04,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 17:31:04,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 17:31:04,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 17:31:04,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 17:31:04,003 INFO L87 Difference]: Start difference. First operand 170 states and 316 transitions. Second operand 3 states. [2018-12-31 17:31:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:04,089 INFO L93 Difference]: Finished difference Result 158 states and 284 transitions. [2018-12-31 17:31:04,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 17:31:04,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-12-31 17:31:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:04,092 INFO L225 Difference]: With dead ends: 158 [2018-12-31 17:31:04,092 INFO L226 Difference]: Without dead ends: 118 [2018-12-31 17:31:04,092 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 17:31:04,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-12-31 17:31:04,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-12-31 17:31:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-12-31 17:31:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 205 transitions. [2018-12-31 17:31:04,110 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 205 transitions. Word has length 22 [2018-12-31 17:31:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:04,111 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 205 transitions. [2018-12-31 17:31:04,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 17:31:04,111 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 205 transitions. [2018-12-31 17:31:04,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-31 17:31:04,118 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:04,118 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] [2018-12-31 17:31:04,118 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:04,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:04,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2057995240, now seen corresponding path program 1 times [2018-12-31 17:31:04,119 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:04,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:04,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:04,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:04,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:04,249 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 17:31:04,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:04,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:31:04,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:31:04,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:31:04,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:31:04,251 INFO L87 Difference]: Start difference. First operand 118 states and 205 transitions. Second operand 4 states. [2018-12-31 17:31:04,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:04,358 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2018-12-31 17:31:04,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 17:31:04,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-31 17:31:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:04,362 INFO L225 Difference]: With dead ends: 124 [2018-12-31 17:31:04,362 INFO L226 Difference]: Without dead ends: 100 [2018-12-31 17:31:04,364 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:31:04,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-12-31 17:31:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-12-31 17:31:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-12-31 17:31:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 159 transitions. [2018-12-31 17:31:04,373 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 159 transitions. Word has length 27 [2018-12-31 17:31:04,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:04,373 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 159 transitions. [2018-12-31 17:31:04,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:31:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 159 transitions. [2018-12-31 17:31:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-31 17:31:04,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:31:04,379 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] [2018-12-31 17:31:04,379 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:31:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:31:04,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1472880406, now seen corresponding path program 2 times [2018-12-31 17:31:04,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:31:04,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:31:04,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:04,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:31:04,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:31:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:31:04,556 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 17:31:04,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:31:04,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 17:31:04,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 17:31:04,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 17:31:04,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:31:04,558 INFO L87 Difference]: Start difference. First operand 100 states and 159 transitions. Second operand 4 states. [2018-12-31 17:31:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:31:04,609 INFO L93 Difference]: Finished difference Result 47 states and 75 transitions. [2018-12-31 17:31:04,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 17:31:04,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-31 17:31:04,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:31:04,611 INFO L225 Difference]: With dead ends: 47 [2018-12-31 17:31:04,611 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 17:31:04,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-31 17:31:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 17:31:04,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 17:31:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 17:31:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 17:31:04,613 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-12-31 17:31:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:31:04,613 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 17:31:04,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 17:31:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 17:31:04,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 17:31:04,620 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-31 17:31:04,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:31:04 BasicIcfg [2018-12-31 17:31:04,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 17:31:04,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 17:31:04,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 17:31:04,623 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 17:31:04,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:31:03" (3/4) ... [2018-12-31 17:31:04,628 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 17:31:04,636 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-12-31 17:31:04,641 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-31 17:31:04,642 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-31 17:31:04,695 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 17:31:04,695 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 17:31:04,696 INFO L168 Benchmark]: Toolchain (without parser) took 2856.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -69.7 MB). Peak memory consumption was 63.5 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:04,698 INFO L168 Benchmark]: CDTParser took 0.17 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 17:31:04,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:04,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.69 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 17:31:04,700 INFO L168 Benchmark]: Boogie Preprocessor took 53.85 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 17:31:04,700 INFO L168 Benchmark]: RCFGBuilder took 513.53 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:04,701 INFO L168 Benchmark]: TraceAbstraction took 1380.06 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: 59.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. [2018-12-31 17:31:04,702 INFO L168 Benchmark]: Witness Printer took 72.33 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 17:31:04,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 763.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -154.9 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.69 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 53.85 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 513.53 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1380.06 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: 59.9 MB). Peak memory consumption was 59.9 MB. Max. memory is 11.5 GB. * Witness Printer took 72.33 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: 643]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 652]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 643]: 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, 57 locations, 3 error locations. SAFE Result, 1.2s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 235 SDtfs, 89 SDslu, 116 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 3383 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...