./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/17_szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/17_szymanski.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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/17_szymanski.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 ....................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 15:23:54,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 15:23:54,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 15:23:54,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 15:23:54,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 15:23:54,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 15:23:54,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 15:23:54,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 15:23:54,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 15:23:54,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 15:23:54,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 15:23:54,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 15:23:54,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 15:23:54,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 15:23:54,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 15:23:54,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 15:23:54,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 15:23:54,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 15:23:54,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 15:23:54,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 15:23:54,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 15:23:54,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 15:23:54,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 15:23:54,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 15:23:54,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 15:23:54,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 15:23:54,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 15:23:54,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 15:23:54,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 15:23:54,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 15:23:54,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 15:23:54,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 15:23:54,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 15:23:54,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 15:23:54,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 15:23:54,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 15:23:54,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 15:23:54,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 15:23:54,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 15:23:54,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 15:23:54,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 15:23:54,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 15:23:54,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 15:23:54,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 15:23:54,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 15:23:54,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 15:23:54,683 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 15:23:54,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 15:23:54,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 15:23:54,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 15:23:54,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 15:23:54,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 15:23:54,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 15:23:54,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 15:23:54,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 15:23:54,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 15:23:54,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 15:23:54,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 15:23:54,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 15:23:54,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 15:23:54,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 15:23:54,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 15:23:54,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 15:23:54,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 15:23:54,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 15:23:54,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 15:23:54,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 15:23:54,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 15:23:54,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 15:23:54,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 15:23:54,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2021-07-05 15:23:54,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 15:23:54,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 15:23:54,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 15:23:54,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 15:23:54,907 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 15:23:54,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/17_szymanski.i [2021-07-05 15:23:54,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d131166/c7388dcce1cb45c8944f8ee7b3519e36/FLAG622243a84 [2021-07-05 15:23:55,382 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 15:23:55,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i [2021-07-05 15:23:55,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d131166/c7388dcce1cb45c8944f8ee7b3519e36/FLAG622243a84 [2021-07-05 15:23:55,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d131166/c7388dcce1cb45c8944f8ee7b3519e36 [2021-07-05 15:23:55,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 15:23:55,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 15:23:55,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 15:23:55,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 15:23:55,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 15:23:55,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:23:55" (1/1) ... [2021-07-05 15:23:55,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3367bfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:55, skipping insertion in model container [2021-07-05 15:23:55,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:23:55" (1/1) ... [2021-07-05 15:23:55,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 15:23:55,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 15:23:56,037 WARN L224 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/17_szymanski.i[30132,30145] [2021-07-05 15:23:56,043 WARN L224 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/17_szymanski.i[30481,30494] [2021-07-05 15:23:56,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 15:23:56,050 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 15:23:56,080 WARN L224 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/17_szymanski.i[30132,30145] [2021-07-05 15:23:56,086 WARN L224 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/17_szymanski.i[30481,30494] [2021-07-05 15:23:56,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 15:23:56,151 INFO L208 MainTranslator]: Completed translation [2021-07-05 15:23:56,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56 WrapperNode [2021-07-05 15:23:56,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 15:23:56,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 15:23:56,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 15:23:56,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 15:23:56,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 15:23:56,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 15:23:56,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 15:23:56,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 15:23:56,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 15:23:56,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 15:23:56,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 15:23:56,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 15:23:56,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (1/1) ... [2021-07-05 15:23:56,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 15:23:56,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 15:23:56,213 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) [2021-07-05 15:23:56,232 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 [2021-07-05 15:23:56,250 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-05 15:23:56,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-05 15:23:56,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 15:23:56,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 15:23:56,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 15:23:56,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 15:23:56,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 15:23:56,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 15:23:56,253 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-05 15:23:56,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 15:23:56,460 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-07-05 15:23:56,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:23:56 BoogieIcfgContainer [2021-07-05 15:23:56,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 15:23:56,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 15:23:56,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 15:23:56,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 15:23:56,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 03:23:55" (1/3) ... [2021-07-05 15:23:56,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ebe377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:23:56, skipping insertion in model container [2021-07-05 15:23:56,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:23:56" (2/3) ... [2021-07-05 15:23:56,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ebe377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:23:56, skipping insertion in model container [2021-07-05 15:23:56,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:23:56" (3/3) ... [2021-07-05 15:23:56,466 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-07-05 15:23:56,470 WARN L144 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-05 15:23:56,470 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 15:23:56,470 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-05 15:23:56,470 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-05 15:23:56,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,487 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,487 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,488 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,488 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,508 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,509 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,509 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:23:56,512 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-05 15:23:56,549 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Err0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 15:23:56,555 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 15:23:56,555 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 15:23:56,566 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 15:23:56,572 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 91 transitions, 187 flow [2021-07-05 15:23:56,574 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 91 transitions, 187 flow [2021-07-05 15:23:56,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 91 transitions, 187 flow [2021-07-05 15:23:56,615 INFO L129 PetriNetUnfolder]: 24/90 cut-off events. [2021-07-05 15:23:56,615 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-05 15:23:56,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 24/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2021-07-05 15:23:56,622 INFO L116 LiptonReduction]: Number of co-enabled transitions 2604 [2021-07-05 15:23:57,736 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-07-05 15:23:58,120 INFO L131 LiptonReduction]: Checked pairs total: 5599 [2021-07-05 15:23:58,120 INFO L133 LiptonReduction]: Total number of compositions: 52 [2021-07-05 15:23:58,126 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2021-07-05 15:23:58,139 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 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) [2021-07-05 15:23:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 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) [2021-07-05 15:23:58,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 15:23:58,149 INFO L374 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 15:23:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 15:23:58,152 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.isCounterexampleFeasibleInternal(AbstractCegarLoop.java:488) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:382) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-05 15:23:58,154 INFO L168 Benchmark]: Toolchain (without parser) took 2415.62 ms. Allocated memory was 62.9 MB in the beginning and 113.2 MB in the end (delta: 50.3 MB). Free memory was 42.5 MB in the beginning and 42.7 MB in the end (delta: -129.7 kB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2021-07-05 15:23:58,155 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 15:23:58,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.31 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 42.3 MB in the beginning and 59.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-07-05 15:23:58,156 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.66 ms. Allocated memory is still 77.6 MB. Free memory was 59.8 MB in the beginning and 57.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 15:23:58,156 INFO L168 Benchmark]: Boogie Preprocessor took 15.70 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 56.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 15:23:58,156 INFO L168 Benchmark]: RCFGBuilder took 269.36 ms. Allocated memory is still 77.6 MB. Free memory was 56.4 MB in the beginning and 56.9 MB in the end (delta: -489.4 kB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-07-05 15:23:58,157 INFO L168 Benchmark]: TraceAbstraction took 1691.37 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 56.4 MB in the beginning and 42.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2021-07-05 15:23:58,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 62.9 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.31 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 42.3 MB in the beginning and 59.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.66 ms. Allocated memory is still 77.6 MB. Free memory was 59.8 MB in the beginning and 57.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.70 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 56.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 269.36 ms. Allocated memory is still 77.6 MB. Free memory was 56.4 MB in the beginning and 56.9 MB in the end (delta: -489.4 kB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1691.37 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 56.4 MB in the beginning and 42.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1545.9ms, 71 PlacesBefore, 35 PlacesAfterwards, 91 TransitionsBefore, 51 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 52 TotalNumberOfCompositions, 5599 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2294, positive: 2126, positive conditional: 0, positive unconditional: 2126, negative: 168, negative conditional: 0, negative unconditional: 168, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1234, positive: 1209, positive conditional: 0, positive unconditional: 1209, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1234, positive: 1178, positive conditional: 0, positive unconditional: 1178, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2294, positive: 917, positive conditional: 0, positive unconditional: 917, negative: 143, negative conditional: 0, negative unconditional: 143, unknown: 1234, unknown conditional: 0, unknown unconditional: 1234] , Statistics on independence cache: Total cache size (in pairs): 164, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-07-05 15:23:58,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 15:23:59,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 15:23:59,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 15:23:59,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 15:23:59,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 15:23:59,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 15:23:59,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 15:23:59,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 15:23:59,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 15:23:59,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 15:23:59,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 15:23:59,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 15:23:59,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 15:23:59,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 15:23:59,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 15:23:59,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 15:23:59,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 15:23:59,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 15:23:59,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 15:23:59,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 15:23:59,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 15:23:59,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 15:23:59,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 15:23:59,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 15:23:59,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 15:23:59,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 15:23:59,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 15:23:59,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 15:23:59,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 15:23:59,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 15:23:59,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 15:23:59,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 15:23:59,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 15:23:59,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 15:23:59,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 15:23:59,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 15:23:59,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 15:23:59,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 15:23:59,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 15:23:59,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 15:23:59,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 15:23:59,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-07-05 15:23:59,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 15:23:59,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 15:23:59,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 15:23:59,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 15:23:59,731 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 15:23:59,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 15:23:59,731 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 15:23:59,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 15:23:59,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 15:23:59,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 15:23:59,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 15:23:59,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 15:23:59,733 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-07-05 15:23:59,733 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-07-05 15:23:59,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 15:23:59,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 15:23:59,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 15:23:59,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 15:23:59,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 15:23:59,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 15:23:59,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 15:23:59,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 15:23:59,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 15:23:59,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 15:23:59,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 15:23:59,735 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-07-05 15:23:59,735 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-07-05 15:23:59,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 15:23:59,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 15:23:59,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-05 15:23:59,736 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c051ca3a402db468e0ce05dfc38d0dfe3d0c9a7 [2021-07-05 15:23:59,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 15:23:59,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 15:23:59,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 15:24:00,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 15:24:00,000 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 15:24:00,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/17_szymanski.i [2021-07-05 15:24:00,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cb1c019/c032c27e25044c6c881c4b7be6bd8936/FLAG80486ac5f [2021-07-05 15:24:00,433 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 15:24:00,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/17_szymanski.i [2021-07-05 15:24:00,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cb1c019/c032c27e25044c6c881c4b7be6bd8936/FLAG80486ac5f [2021-07-05 15:24:00,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cb1c019/c032c27e25044c6c881c4b7be6bd8936 [2021-07-05 15:24:00,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 15:24:00,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 15:24:00,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 15:24:00,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 15:24:00,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 15:24:00,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26493ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00, skipping insertion in model container [2021-07-05 15:24:00,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 15:24:00,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 15:24:00,735 WARN L224 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/17_szymanski.i[30132,30145] [2021-07-05 15:24:00,741 WARN L224 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/17_szymanski.i[30481,30494] [2021-07-05 15:24:00,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 15:24:00,755 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 15:24:00,787 WARN L224 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/17_szymanski.i[30132,30145] [2021-07-05 15:24:00,788 WARN L224 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/17_szymanski.i[30481,30494] [2021-07-05 15:24:00,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 15:24:00,835 INFO L208 MainTranslator]: Completed translation [2021-07-05 15:24:00,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00 WrapperNode [2021-07-05 15:24:00,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 15:24:00,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 15:24:00,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 15:24:00,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 15:24:00,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 15:24:00,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 15:24:00,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 15:24:00,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 15:24:00,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 15:24:00,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 15:24:00,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 15:24:00,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 15:24:00,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (1/1) ... [2021-07-05 15:24:00,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 15:24:00,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 15:24:00,927 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) [2021-07-05 15:24:00,939 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 [2021-07-05 15:24:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-07-05 15:24:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-07-05 15:24:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 15:24:00,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 15:24:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-07-05 15:24:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-07-05 15:24:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 15:24:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 15:24:00,967 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-05 15:24:01,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 15:24:01,299 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-07-05 15:24:01,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:24:01 BoogieIcfgContainer [2021-07-05 15:24:01,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 15:24:01,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 15:24:01,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 15:24:01,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 15:24:01,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 03:24:00" (1/3) ... [2021-07-05 15:24:01,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b81ac07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:24:01, skipping insertion in model container [2021-07-05 15:24:01,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 03:24:00" (2/3) ... [2021-07-05 15:24:01,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b81ac07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 03:24:01, skipping insertion in model container [2021-07-05 15:24:01,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 03:24:01" (3/3) ... [2021-07-05 15:24:01,305 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-07-05 15:24:01,310 WARN L144 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-05 15:24:01,310 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 15:24:01,310 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-07-05 15:24:01,310 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-05 15:24:01,332 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,333 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,333 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,334 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,337 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,337 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-05 15:24:01,342 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-05 15:24:01,378 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Err0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 15:24:01,384 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 15:24:01,384 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 15:24:01,403 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-07-05 15:24:01,409 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2021-07-05 15:24:01,410 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 92 transitions, 189 flow [2021-07-05 15:24:01,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2021-07-05 15:24:01,440 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2021-07-05 15:24:01,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-05 15:24:01,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2021-07-05 15:24:01,446 INFO L116 LiptonReduction]: Number of co-enabled transitions 2604 [2021-07-05 15:24:02,957 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-07-05 15:24:03,075 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-07-05 15:24:03,218 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-07-05 15:24:03,328 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-07-05 15:24:03,338 INFO L131 LiptonReduction]: Checked pairs total: 5023 [2021-07-05 15:24:03,338 INFO L133 LiptonReduction]: Total number of compositions: 53 [2021-07-05 15:24:03,343 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 51 transitions, 107 flow [2021-07-05 15:24:03,356 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 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) [2021-07-05 15:24:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 223 states have (on average 3.2376681614349776) internal successors, (722), 226 states have internal predecessors, (722), 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) [2021-07-05 15:24:03,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-05 15:24:03,378 INFO L374 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 15:24:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 15:24:03,382 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyFactory.constructStrategy(StrategyFactory.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.isCounterexampleFeasibleInternal(AbstractCegarLoop.java:488) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:382) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:221) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-05 15:24:03,385 INFO L168 Benchmark]: Toolchain (without parser) took 2923.10 ms. Allocated memory was 54.5 MB in the beginning and 107.0 MB in the end (delta: 52.4 MB). Free memory was 29.9 MB in the beginning and 75.8 MB in the end (delta: -45.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-07-05 15:24:03,386 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 15:24:03,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.25 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 29.7 MB in the beginning and 50.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-07-05 15:24:03,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.79 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 15:24:03,390 INFO L168 Benchmark]: Boogie Preprocessor took 30.40 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 47.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 15:24:03,391 INFO L168 Benchmark]: RCFGBuilder took 389.23 ms. Allocated memory is still 73.4 MB. Free memory was 46.8 MB in the beginning and 43.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-07-05 15:24:03,392 INFO L168 Benchmark]: TraceAbstraction took 2082.77 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 42.9 MB in the beginning and 75.8 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 15:24:03,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.25 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 29.7 MB in the beginning and 50.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.79 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.40 ms. Allocated memory is still 73.4 MB. Free memory was 48.6 MB in the beginning and 47.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 389.23 ms. Allocated memory is still 73.4 MB. Free memory was 46.8 MB in the beginning and 43.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2082.77 ms. Allocated memory was 73.4 MB in the beginning and 107.0 MB in the end (delta: 33.6 MB). Free memory was 42.9 MB in the beginning and 75.8 MB in the end (delta: -32.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1927.8ms, 72 PlacesBefore, 35 PlacesAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 53 TotalNumberOfCompositions, 5023 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2132, positive: 1988, positive conditional: 0, positive unconditional: 1988, negative: 144, negative conditional: 0, negative unconditional: 144, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1226, positive: 1202, positive conditional: 0, positive unconditional: 1202, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1226, positive: 1173, positive conditional: 0, positive unconditional: 1173, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 99, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2132, positive: 786, positive conditional: 0, positive unconditional: 786, negative: 120, negative conditional: 0, negative unconditional: 120, unknown: 1226, unknown conditional: 0, unknown unconditional: 1226] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.PathProgramCache.addRun(PathProgramCache.java:68) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-07-05 15:24:03,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...