./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/03_incdec.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/03_incdec.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:17:08,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:17:08,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:17:08,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:17:08,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:17:08,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:17:08,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:17:08,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:17:08,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:17:08,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:17:08,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:17:08,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:17:08,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:17:08,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:17:08,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:17:08,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:17:08,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:17:08,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:17:08,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:17:08,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:17:08,835 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:17:08,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:17:08,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:17:08,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:17:08,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:17:08,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:17:08,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:17:08,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:17:08,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:17:08,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:17:08,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:17:08,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:17:08,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:17:08,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:17:08,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:17:08,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:17:08,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:17:08,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:17:08,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:17:08,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:17:08,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:17:08,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:17:08,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:17:08,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:17:08,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:17:08,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:17:08,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:17:08,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:17:08,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:17:08,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:17:08,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:17:08,885 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:17:08,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:17:08,887 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:17:08,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:17:08,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:17:08,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:17:08,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:17:08,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:17:08,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:17:08,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:17:08,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:17:08,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:17:08,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:17:08,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:17:08,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:17:08,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:17:08,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:17:08,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:17:08,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:17:08,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:17:08,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:17:08,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:17:08,891 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:17:08,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:17:08,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:17:08,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 [2022-07-22 21:17:09,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:17:09,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:17:09,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:17:09,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:17:09,148 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:17:09,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/03_incdec.i [2022-07-22 21:17:09,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937eb2c96/7e92cd704ffb4340a7d78dcf957efb1c/FLAGf73fd6a00 [2022-07-22 21:17:09,661 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:17:09,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2022-07-22 21:17:09,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937eb2c96/7e92cd704ffb4340a7d78dcf957efb1c/FLAGf73fd6a00 [2022-07-22 21:17:10,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937eb2c96/7e92cd704ffb4340a7d78dcf957efb1c [2022-07-22 21:17:10,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:17:10,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:17:10,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:17:10,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:17:10,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:17:10,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e21194e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10, skipping insertion in model container [2022-07-22 21:17:10,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:17:10,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:17:10,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547] [2022-07-22 21:17:10,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941] [2022-07-22 21:17:10,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:17:10,334 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:17:10,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30534,30547] [2022-07-22 21:17:10,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i[30928,30941] [2022-07-22 21:17:10,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:17:10,426 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:17:10,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10 WrapperNode [2022-07-22 21:17:10,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:17:10,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:17:10,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:17:10,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:17:10,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,490 INFO L137 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2022-07-22 21:17:10,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:17:10,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:17:10,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:17:10,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:17:10,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:17:10,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:17:10,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:17:10,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:17:10,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (1/1) ... [2022-07-22 21:17:10,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:17:10,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:17:10,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:17:10,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:17:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-22 21:17:10,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-22 21:17:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:17:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:17:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:17:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:17:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:17:10,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:17:10,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:17:10,618 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:17:10,713 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:17:10,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:17:10,930 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:17:11,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:17:11,015 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 21:17:11,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:17:11 BoogieIcfgContainer [2022-07-22 21:17:11,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:17:11,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:17:11,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:17:11,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:17:11,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:17:10" (1/3) ... [2022-07-22 21:17:11,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ba2b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:17:11, skipping insertion in model container [2022-07-22 21:17:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:17:10" (2/3) ... [2022-07-22 21:17:11,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ba2b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:17:11, skipping insertion in model container [2022-07-22 21:17:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:17:11" (3/3) ... [2022-07-22 21:17:11,025 INFO L111 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2022-07-22 21:17:11,031 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:17:11,039 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:17:11,040 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:17:11,040 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:17:11,105 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:17:11,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 181 flow [2022-07-22 21:17:11,208 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2022-07-22 21:17:11,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:17:11,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 7/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2022-07-22 21:17:11,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 88 transitions, 181 flow [2022-07-22 21:17:11,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 88 transitions, 181 flow [2022-07-22 21:17:11,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:17:11,243 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32cb3378, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@368af2c6 [2022-07-22 21:17:11,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:17:11,259 INFO L129 PetriNetUnfolder]: 2/50 cut-off events. [2022-07-22 21:17:11,259 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:17:11,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:11,261 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:11,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:17:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1017339012, now seen corresponding path program 1 times [2022-07-22 21:17:11,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:11,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653203763] [2022-07-22 21:17:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:11,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:17:11,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:17:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:17:11,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:17:11,467 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:17:11,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-22 21:17:11,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-22 21:17:11,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-22 21:17:11,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-22 21:17:11,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-22 21:17:11,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:17:11,472 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:17:11,475 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:17:11,475 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:17:11,532 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:17:11,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 302 flow [2022-07-22 21:17:11,594 INFO L129 PetriNetUnfolder]: 13/169 cut-off events. [2022-07-22 21:17:11,594 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:17:11,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 169 events. 13/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2022-07-22 21:17:11,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 302 flow [2022-07-22 21:17:11,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 145 transitions, 302 flow [2022-07-22 21:17:11,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:17:11,605 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32cb3378, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@368af2c6 [2022-07-22 21:17:11,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:17:11,613 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2022-07-22 21:17:11,614 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:17:11,614 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:11,614 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:11,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 257166716, now seen corresponding path program 1 times [2022-07-22 21:17:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:11,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170810569] [2022-07-22 21:17:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:11,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:17:11,641 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:17:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:17:11,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:17:11,660 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:17:11,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-22 21:17:11,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-22 21:17:11,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-22 21:17:11,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-22 21:17:11,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-22 21:17:11,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-22 21:17:11,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-22 21:17:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:17:11,663 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:17:11,663 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:17:11,663 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-22 21:17:11,693 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:17:11,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 202 transitions, 425 flow [2022-07-22 21:17:11,731 INFO L129 PetriNetUnfolder]: 19/239 cut-off events. [2022-07-22 21:17:11,732 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:17:11,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 239 events. 19/239 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 870 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2022-07-22 21:17:11,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 202 transitions, 425 flow [2022-07-22 21:17:11,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 202 transitions, 425 flow [2022-07-22 21:17:11,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:17:11,744 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32cb3378, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@368af2c6 [2022-07-22 21:17:11,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-22 21:17:11,758 INFO L129 PetriNetUnfolder]: 5/126 cut-off events. [2022-07-22 21:17:11,771 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:17:11,771 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:11,771 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:11,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-22 21:17:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1812641839, now seen corresponding path program 1 times [2022-07-22 21:17:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745191601] [2022-07-22 21:17:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:12,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:12,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745191601] [2022-07-22 21:17:12,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745191601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:12,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:12,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:17:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999192820] [2022-07-22 21:17:12,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:12,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:17:12,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:12,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:17:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:17:12,096 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 202 [2022-07-22 21:17:12,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 202 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:12,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 202 [2022-07-22 21:17:12,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:17,421 INFO L129 PetriNetUnfolder]: 22290/47811 cut-off events. [2022-07-22 21:17:17,421 INFO L130 PetriNetUnfolder]: For 2533/2533 co-relation queries the response was YES. [2022-07-22 21:17:17,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83392 conditions, 47811 events. 22290/47811 cut-off events. For 2533/2533 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 541096 event pairs, 9635 based on Foata normal form. 15844/58146 useless extension candidates. Maximal degree in co-relation 35146. Up to 14341 conditions per place. [2022-07-22 21:17:17,945 INFO L132 encePairwiseOnDemand]: 177/202 looper letters, 200 selfloop transitions, 14 changer transitions 0/324 dead transitions. [2022-07-22 21:17:17,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 324 transitions, 1135 flow [2022-07-22 21:17:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:17:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:17:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 942 transitions. [2022-07-22 21:17:17,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7772277227722773 [2022-07-22 21:17:17,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 942 transitions. [2022-07-22 21:17:17,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 942 transitions. [2022-07-22 21:17:17,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:17,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 942 transitions. [2022-07-22 21:17:17,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:17,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:17,986 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:17,988 INFO L186 Difference]: Start difference. First operand has 193 places, 202 transitions, 425 flow. Second operand 6 states and 942 transitions. [2022-07-22 21:17:17,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 324 transitions, 1135 flow [2022-07-22 21:17:17,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 324 transitions, 1121 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-07-22 21:17:18,004 INFO L242 Difference]: Finished difference. Result has 190 places, 197 transitions, 502 flow [2022-07-22 21:17:18,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=190, PETRI_TRANSITIONS=197} [2022-07-22 21:17:18,010 INFO L279 CegarLoopForPetriNet]: 193 programPoint places, -3 predicate places. [2022-07-22 21:17:18,010 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 197 transitions, 502 flow [2022-07-22 21:17:18,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:18,011 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:18,011 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:18,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:17:18,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-22 21:17:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:18,013 INFO L85 PathProgramCache]: Analyzing trace with hash 269474782, now seen corresponding path program 1 times [2022-07-22 21:17:18,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:18,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547471172] [2022-07-22 21:17:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:18,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:17:18,053 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:17:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:17:18,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:17:18,081 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:17:18,081 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-07-22 21:17:18,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-07-22 21:17:18,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-07-22 21:17:18,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-07-22 21:17:18,085 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2022-07-22 21:17:18,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2022-07-22 21:17:18,086 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2022-07-22 21:17:18,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-07-22 21:17:18,087 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-07-22 21:17:18,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:17:18,088 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:17:18,089 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:17:18,089 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-22 21:17:18,140 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:17:18,148 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 247 places, 259 transitions, 550 flow [2022-07-22 21:17:18,215 INFO L129 PetriNetUnfolder]: 25/309 cut-off events. [2022-07-22 21:17:18,216 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-22 21:17:18,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 309 events. 25/309 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1238 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2022-07-22 21:17:18,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 259 transitions, 550 flow [2022-07-22 21:17:18,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 259 transitions, 550 flow [2022-07-22 21:17:18,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:17:18,225 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32cb3378, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@368af2c6 [2022-07-22 21:17:18,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-22 21:17:18,235 INFO L129 PetriNetUnfolder]: 6/129 cut-off events. [2022-07-22 21:17:18,236 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-22 21:17:18,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:18,236 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:18,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-07-22 21:17:18,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1498301880, now seen corresponding path program 1 times [2022-07-22 21:17:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:18,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173687030] [2022-07-22 21:17:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:18,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173687030] [2022-07-22 21:17:18,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173687030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:18,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:18,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:17:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088724868] [2022-07-22 21:17:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:17:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:17:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:17:18,324 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 259 [2022-07-22 21:17:18,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 259 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:18,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:18,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 259 [2022-07-22 21:17:18,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand