./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 35987657 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-?-3598765 [2022-07-21 08:35:07,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:35:07,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:35:07,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:35:07,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:35:07,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:35:07,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:35:07,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:35:07,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:35:07,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:35:07,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:35:07,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:35:07,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:35:07,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:35:07,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:35:07,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:35:07,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:35:07,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:35:07,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:35:07,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:35:07,781 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:35:07,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:35:07,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:35:07,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:35:07,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:35:07,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:35:07,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:35:07,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:35:07,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:35:07,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:35:07,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:35:07,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:35:07,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:35:07,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:35:07,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:35:07,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:35:07,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:35:07,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:35:07,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:35:07,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:35:07,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:35:07,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:35:07,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:35:07,851 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:35:07,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:35:07,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:35:07,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:35:07,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:35:07,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:35:07,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:35:07,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:35:07,853 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:35:07,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:35:07,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:35:07,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:35:07,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:35:07,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:35:07,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:35:07,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:35:07,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:35:07,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:35:07,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:35:07,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:35:07,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:35:07,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:35:07,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:35:07,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:35:07,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:35:07,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:35:07,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:35:07,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:35:07,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:35:07,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:35:07,858 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:35:07,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:35:07,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:35:07,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c717c54832d7b18d55a1459c6f740661389c67176a032001ce64e3c282b955 [2022-07-21 08:35:08,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:35:08,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:35:08,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:35:08,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:35:08,185 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:35:08,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/03_incdec.i [2022-07-21 08:35:08,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b95c7e3/e1749f789ca9452b84a55163a20074ae/FLAG96365030a [2022-07-21 08:35:08,795 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:35:08,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2022-07-21 08:35:08,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b95c7e3/e1749f789ca9452b84a55163a20074ae/FLAG96365030a [2022-07-21 08:35:09,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18b95c7e3/e1749f789ca9452b84a55163a20074ae [2022-07-21 08:35:09,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:35:09,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:35:09,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:35:09,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:35:09,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:35:09,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deb1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09, skipping insertion in model container [2022-07-21 08:35:09,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:35:09,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:35:09,554 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] [2022-07-21 08:35:09,564 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] [2022-07-21 08:35:09,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:35:09,587 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:35:09,643 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] [2022-07-21 08:35:09,646 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] [2022-07-21 08:35:09,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:35:09,684 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:35:09,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09 WrapperNode [2022-07-21 08:35:09,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:35:09,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:35:09,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:35:09,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:35:09,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,739 INFO L137 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2022-07-21 08:35:09,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:35:09,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:35:09,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:35:09,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:35:09,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:35:09,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:35:09,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:35:09,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:35:09,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (1/1) ... [2022-07-21 08:35:09,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:35:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:35:09,850 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) [2022-07-21 08:35:09,854 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 [2022-07-21 08:35:09,896 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-21 08:35:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-21 08:35:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:35:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:35:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:35:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:35:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:35:09,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:35:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:35:09,901 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:35:10,023 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:35:10,024 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:35:10,315 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:35:10,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:35:10,431 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 08:35:10,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:35:10 BoogieIcfgContainer [2022-07-21 08:35:10,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:35:10,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:35:10,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:35:10,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:35:10,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:35:09" (1/3) ... [2022-07-21 08:35:10,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585e38f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:35:10, skipping insertion in model container [2022-07-21 08:35:10,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:35:09" (2/3) ... [2022-07-21 08:35:10,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585e38f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:35:10, skipping insertion in model container [2022-07-21 08:35:10,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:35:10" (3/3) ... [2022-07-21 08:35:10,443 INFO L111 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2022-07-21 08:35:10,448 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:35:10,457 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:35:10,458 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:35:10,458 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:35:10,523 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:35:10,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 88 transitions, 181 flow [2022-07-21 08:35:10,597 INFO L129 PetriNetUnfolder]: 7/99 cut-off events. [2022-07-21 08:35:10,597 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:35:10,602 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. [2022-07-21 08:35:10,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 88 transitions, 181 flow [2022-07-21 08:35:10,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 88 transitions, 181 flow [2022-07-21 08:35:10,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:35:10,622 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@114d679a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e1e367 [2022-07-21 08:35:10,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 08:35:10,632 INFO L129 PetriNetUnfolder]: 2/50 cut-off events. [2022-07-21 08:35:10,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:35:10,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:10,633 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] [2022-07-21 08:35:10,634 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)] === [2022-07-21 08:35:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1017339012, now seen corresponding path program 1 times [2022-07-21 08:35:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:10,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258174798] [2022-07-21 08:35:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:10,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:35:10,753 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:35:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:35:10,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:35:10,816 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:35:10,818 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-21 08:35:10,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-21 08:35:10,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-21 08:35:10,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-21 08:35:10,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-21 08:35:10,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:35:10,824 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 08:35:10,829 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:35:10,830 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-21 08:35:10,876 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:35:10,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 139 places, 145 transitions, 302 flow [2022-07-21 08:35:10,941 INFO L129 PetriNetUnfolder]: 13/169 cut-off events. [2022-07-21 08:35:10,946 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:35:10,951 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. [2022-07-21 08:35:10,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 145 transitions, 302 flow [2022-07-21 08:35:10,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 145 transitions, 302 flow [2022-07-21 08:35:10,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:35:10,960 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@114d679a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e1e367 [2022-07-21 08:35:10,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:35:10,981 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2022-07-21 08:35:10,987 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:35:10,988 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:10,989 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] [2022-07-21 08:35:10,989 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)] === [2022-07-21 08:35:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:10,990 INFO L85 PathProgramCache]: Analyzing trace with hash 257166716, now seen corresponding path program 1 times [2022-07-21 08:35:10,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:10,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537803645] [2022-07-21 08:35:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:10,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:35:11,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:35:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:35:11,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:35:11,067 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:35:11,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-07-21 08:35:11,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-21 08:35:11,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-07-21 08:35:11,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-21 08:35:11,068 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-21 08:35:11,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-21 08:35:11,069 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-21 08:35:11,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:35:11,069 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 08:35:11,070 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:35:11,070 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-21 08:35:11,106 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:35:11,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 193 places, 202 transitions, 425 flow [2022-07-21 08:35:11,162 INFO L129 PetriNetUnfolder]: 19/239 cut-off events. [2022-07-21 08:35:11,163 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-21 08:35:11,166 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. [2022-07-21 08:35:11,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 202 transitions, 425 flow [2022-07-21 08:35:11,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 202 transitions, 425 flow [2022-07-21 08:35:11,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:35:11,174 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@114d679a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e1e367 [2022-07-21 08:35:11,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-21 08:35:11,204 INFO L129 PetriNetUnfolder]: 5/126 cut-off events. [2022-07-21 08:35:11,205 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:35:11,205 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:11,207 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] [2022-07-21 08:35:11,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-07-21 08:35:11,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1812641839, now seen corresponding path program 1 times [2022-07-21 08:35:11,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:11,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348112976] [2022-07-21 08:35:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:11,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:11,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348112976] [2022-07-21 08:35:11,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348112976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:11,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:11,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:35:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180606293] [2022-07-21 08:35:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:35:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:35:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:35:11,441 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 202 [2022-07-21 08:35:11,447 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) [2022-07-21 08:35:11,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:11,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 202 [2022-07-21 08:35:11,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:17,357 INFO L129 PetriNetUnfolder]: 22290/47811 cut-off events. [2022-07-21 08:35:17,357 INFO L130 PetriNetUnfolder]: For 2533/2533 co-relation queries the response was YES. [2022-07-21 08:35:17,552 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. [2022-07-21 08:35:18,039 INFO L132 encePairwiseOnDemand]: 177/202 looper letters, 200 selfloop transitions, 14 changer transitions 0/324 dead transitions. [2022-07-21 08:35:18,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 324 transitions, 1135 flow [2022-07-21 08:35:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:35:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:35:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 942 transitions. [2022-07-21 08:35:18,058 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7772277227722773 [2022-07-21 08:35:18,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 942 transitions. [2022-07-21 08:35:18,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 942 transitions. [2022-07-21 08:35:18,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:18,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 942 transitions. [2022-07-21 08:35:18,071 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) [2022-07-21 08:35:18,079 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) [2022-07-21 08:35:18,080 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) [2022-07-21 08:35:18,082 INFO L186 Difference]: Start difference. First operand has 193 places, 202 transitions, 425 flow. Second operand 6 states and 942 transitions. [2022-07-21 08:35:18,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 324 transitions, 1135 flow [2022-07-21 08:35:18,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 324 transitions, 1121 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-07-21 08:35:18,099 INFO L242 Difference]: Finished difference. Result has 190 places, 197 transitions, 502 flow [2022-07-21 08:35:18,102 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} [2022-07-21 08:35:18,107 INFO L279 CegarLoopForPetriNet]: 193 programPoint places, -3 predicate places. [2022-07-21 08:35:18,108 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 197 transitions, 502 flow [2022-07-21 08:35:18,108 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) [2022-07-21 08:35:18,108 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:18,109 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] [2022-07-21 08:35:18,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:35:18,109 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)] === [2022-07-21 08:35:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash 269474782, now seen corresponding path program 1 times [2022-07-21 08:35:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:18,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362932134] [2022-07-21 08:35:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:35:18,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 08:35:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 08:35:18,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 08:35:18,177 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 08:35:18,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-07-21 08:35:18,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2022-07-21 08:35:18,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2022-07-21 08:35:18,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2022-07-21 08:35:18,179 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2022-07-21 08:35:18,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2022-07-21 08:35:18,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2022-07-21 08:35:18,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2022-07-21 08:35:18,181 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2022-07-21 08:35:18,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:35:18,182 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 08:35:18,183 WARN L231 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-21 08:35:18,183 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-07-21 08:35:18,221 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:35:18,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 247 places, 259 transitions, 550 flow [2022-07-21 08:35:18,265 INFO L129 PetriNetUnfolder]: 25/309 cut-off events. [2022-07-21 08:35:18,265 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-21 08:35:18,269 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. [2022-07-21 08:35:18,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 259 transitions, 550 flow [2022-07-21 08:35:18,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 259 transitions, 550 flow [2022-07-21 08:35:18,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:35:18,275 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@114d679a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e1e367 [2022-07-21 08:35:18,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-21 08:35:18,284 INFO L129 PetriNetUnfolder]: 6/129 cut-off events. [2022-07-21 08:35:18,284 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-21 08:35:18,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:18,285 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] [2022-07-21 08:35:18,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-07-21 08:35:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1498301880, now seen corresponding path program 1 times [2022-07-21 08:35:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:18,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418672403] [2022-07-21 08:35:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:18,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418672403] [2022-07-21 08:35:18,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418672403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:18,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:18,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:35:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512872345] [2022-07-21 08:35:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:35:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:35:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:35:18,346 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 259 [2022-07-21 08:35:18,346 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) [2022-07-21 08:35:18,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:18,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 259 [2022-07-21 08:35:18,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand