./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 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/23_lu-fig2.fixed.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 62fd7ea4bef52a1e791bedc427ce7156627e7f58 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:32:32,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:32:32,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:32:32,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:32:32,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:32:32,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:32:32,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:32:32,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:32:32,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:32:32,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:32:32,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:32:32,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:32:32,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:32:32,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:32:32,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:32:32,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:32:32,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:32:32,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:32:32,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:32:32,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:32:32,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:32:32,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:32:32,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:32:32,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:32:32,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:32:32,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:32:32,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:32:32,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:32:32,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:32:32,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:32:32,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:32:32,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:32:32,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:32:32,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:32:32,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:32:32,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:32:32,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:32:32,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:32:32,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:32:32,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:32:32,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:32:32,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:32:32,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:32:32,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:32:32,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:32:32,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:32:32,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:32:32,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:32:32,249 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:32:32,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:32:32,249 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:32:32,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:32:32,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:32:32,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:32:32,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:32:32,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:32:32,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:32:32,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:32:32,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:32:32,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:32:32,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:32:32,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:32:32,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:32:32,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:32:32,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:32:32,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:32:32,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:32:32,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:32:32,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:32:32,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:32:32,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:32:32,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:32:32,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62fd7ea4bef52a1e791bedc427ce7156627e7f58 [2021-09-22 14:32:32,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:32:32,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:32:32,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:32:32,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:32:32,583 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:32:32,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2021-09-22 14:32:32,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245468a52/85c45200e0b04c4b96a962c34999a1c9/FLAG7ce3e03d1 [2021-09-22 14:32:33,015 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:32:33,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/23_lu-fig2.fixed.i [2021-09-22 14:32:33,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245468a52/85c45200e0b04c4b96a962c34999a1c9/FLAG7ce3e03d1 [2021-09-22 14:32:33,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245468a52/85c45200e0b04c4b96a962c34999a1c9 [2021-09-22 14:32:33,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:32:33,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:32:33,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:32:33,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:32:33,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:32:33,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6db382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33, skipping insertion in model container [2021-09-22 14:32:33,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:32:33,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:32:33,280 WARN L228 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/23_lu-fig2.fixed.i[30382,30395] [2021-09-22 14:32:33,302 WARN L228 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/23_lu-fig2.fixed.i[30752,30765] [2021-09-22 14:32:33,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:32:33,318 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:32:33,352 WARN L228 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/23_lu-fig2.fixed.i[30382,30395] [2021-09-22 14:32:33,354 WARN L228 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/23_lu-fig2.fixed.i[30752,30765] [2021-09-22 14:32:33,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:32:33,386 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:32:33,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33 WrapperNode [2021-09-22 14:32:33,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:32:33,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:32:33,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:32:33,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:32:33,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:32:33,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:32:33,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:32:33,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:32:33,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:32:33,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:32:33,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:32:33,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:32:33,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (1/1) ... [2021-09-22 14:32:33,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:32:33,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:32:33,493 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) [2021-09-22 14:32:33,501 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 [2021-09-22 14:32:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-09-22 14:32:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-09-22 14:32:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:32:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:32:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:32:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:32:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:32:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:32:33,523 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:32:33,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:32:33,941 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-09-22 14:32:33,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:32:33 BoogieIcfgContainer [2021-09-22 14:32:33,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:32:33,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:32:33,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:32:33,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:32:33,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:32:33" (1/3) ... [2021-09-22 14:32:33,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488a08e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:32:33, skipping insertion in model container [2021-09-22 14:32:33,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:32:33" (2/3) ... [2021-09-22 14:32:33,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488a08e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:32:33, skipping insertion in model container [2021-09-22 14:32:33,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:32:33" (3/3) ... [2021-09-22 14:32:33,949 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-09-22 14:32:33,953 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:32:33,953 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:32:33,953 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-09-22 14:32:33,953 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:32:33,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,975 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,976 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,976 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,977 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,977 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,977 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,978 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,978 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,979 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,979 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,979 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,980 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,981 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,986 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:32:33,990 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:32:34,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:32:34,038 INFO L339 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, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-09-22 14:32:34,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-09-22 14:32:34,050 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:32:34,057 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 50 transitions, 105 flow [2021-09-22 14:32:34,065 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 50 transitions, 105 flow [2021-09-22 14:32:34,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 50 transitions, 105 flow [2021-09-22 14:32:34,090 INFO L129 PetriNetUnfolder]: 2/49 cut-off events. [2021-09-22 14:32:34,090 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:32:34,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-09-22 14:32:34,094 INFO L116 LiptonReduction]: Number of co-enabled transitions 396 [2021-09-22 14:32:35,801 INFO L131 LiptonReduction]: Checked pairs total: 883 [2021-09-22 14:32:35,801 INFO L133 LiptonReduction]: Total number of compositions: 39 [2021-09-22 14:32:35,806 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 14 transitions, 33 flow [2021-09-22 14:32:35,812 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36 states, 31 states have (on average 2.064516129032258) internal successors, (64), 35 states have internal predecessors, (64), 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) [2021-09-22 14:32:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 2.064516129032258) internal successors, (64), 35 states have internal predecessors, (64), 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) [2021-09-22 14:32:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-09-22 14:32:35,816 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:32:35,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-09-22 14:32:35,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2021-09-22 14:32:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:32:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 11013550, now seen corresponding path program 1 times [2021-09-22 14:32:35,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:32:35,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413827659] [2021-09-22 14:32:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:32:35,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:32:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:32:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:32:35,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:32:35,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413827659] [2021-09-22 14:32:35,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413827659] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:32:35,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:32:35,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-09-22 14:32:35,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339058562] [2021-09-22 14:32:35,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:32:35,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:32:35,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:32:35,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:32:35,945 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 2.064516129032258) internal successors, (64), 35 states have internal predecessors, (64), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-09-22 14:32:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:32:35,964 INFO L93 Difference]: Finished difference Result 27 states and 47 transitions. [2021-09-22 14:32:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:32:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2021-09-22 14:32:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:32:35,970 INFO L225 Difference]: With dead ends: 27 [2021-09-22 14:32:35,970 INFO L226 Difference]: Without dead ends: 22 [2021-09-22 14:32:35,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:32:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-09-22 14:32:35,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-09-22 14:32:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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) [2021-09-22 14:32:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2021-09-22 14:32:35,991 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 4 [2021-09-22 14:32:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:32:35,992 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 38 transitions. [2021-09-22 14:32:35,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-09-22 14:32:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 38 transitions. [2021-09-22 14:32:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-09-22 14:32:35,994 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:32:35,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-09-22 14:32:35,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:32:35,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2021-09-22 14:32:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:32:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash 341427302, now seen corresponding path program 1 times [2021-09-22 14:32:35,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:32:35,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275010831] [2021-09-22 14:32:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:32:35,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:32:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:32:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:32:36,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:32:36,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275010831] [2021-09-22 14:32:36,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275010831] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:32:36,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:32:36,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:32:36,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959588106] [2021-09-22 14:32:36,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:32:36,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:32:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:32:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:32:36,059 INFO L87 Difference]: Start difference. First operand 22 states and 38 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-09-22 14:32:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:32:36,065 INFO L93 Difference]: Finished difference Result 21 states and 35 transitions. [2021-09-22 14:32:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:32:36,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2021-09-22 14:32:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:32:36,067 INFO L225 Difference]: With dead ends: 21 [2021-09-22 14:32:36,067 INFO L226 Difference]: Without dead ends: 18 [2021-09-22 14:32:36,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:32:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-09-22 14:32:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-09-22 14:32:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 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) [2021-09-22 14:32:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2021-09-22 14:32:36,082 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 27 transitions. Word has length 5 [2021-09-22 14:32:36,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:32:36,082 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 27 transitions. [2021-09-22 14:32:36,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-09-22 14:32:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 27 transitions. [2021-09-22 14:32:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-09-22 14:32:36,083 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:32:36,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:32:36,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:32:36,084 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2021-09-22 14:32:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:32:36,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1694257605, now seen corresponding path program 1 times [2021-09-22 14:32:36,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:32:36,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91974737] [2021-09-22 14:32:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:32:36,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:32:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:32:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:32:36,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:32:36,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91974737] [2021-09-22 14:32:36,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91974737] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:32:36,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:32:36,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-09-22 14:32:36,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530432763] [2021-09-22 14:32:36,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:32:36,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:32:36,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:32:36,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:32:36,150 INFO L87 Difference]: Start difference. First operand 18 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-09-22 14:32:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:32:36,161 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2021-09-22 14:32:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:32:36,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-09-22 14:32:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:32:36,162 INFO L225 Difference]: With dead ends: 14 [2021-09-22 14:32:36,162 INFO L226 Difference]: Without dead ends: 14 [2021-09-22 14:32:36,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:32:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-09-22 14:32:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-09-22 14:32:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-09-22 14:32:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2021-09-22 14:32:36,164 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2021-09-22 14:32:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:32:36,164 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-09-22 14:32:36,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-09-22 14:32:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2021-09-22 14:32:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:32:36,166 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:32:36,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:32:36,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:32:36,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 1 more)] === [2021-09-22 14:32:36,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:32:36,167 INFO L82 PathProgramCache]: Analyzing trace with hash 388198214, now seen corresponding path program 1 times [2021-09-22 14:32:36,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:32:36,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714426881] [2021-09-22 14:32:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:32:36,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:32:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:32:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:32:36,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:32:36,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714426881] [2021-09-22 14:32:36,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714426881] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:32:36,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:32:36,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:32:36,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288684475] [2021-09-22 14:32:36,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:32:36,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:32:36,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:32:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:32:36,231 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:32:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:32:36,236 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2021-09-22 14:32:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:32:36,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2021-09-22 14:32:36,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:32:36,237 INFO L225 Difference]: With dead ends: 13 [2021-09-22 14:32:36,237 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:32:36,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:32:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:32:36,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:32:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-09-22 14:32:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:32:36,238 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-09-22 14:32:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:32:36,241 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:32:36,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-09-22 14:32:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:32:36,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:32:36,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:32:36,244 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:32:36,245 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:32:36,245 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:32:36,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:32:36,250 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:32:36,250 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:32:36,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:32:36 BasicIcfg [2021-09-22 14:32:36,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:32:36,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:32:36,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:32:36,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:32:36,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:32:33" (3/4) ... [2021-09-22 14:32:36,255 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:32:36,258 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2021-09-22 14:32:36,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2021-09-22 14:32:36,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-09-22 14:32:36,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-09-22 14:32:36,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:32:36,292 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:32:36,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:32:36,294 INFO L168 Benchmark]: Toolchain (without parser) took 3245.40 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 41.8 MB in the beginning and 53.6 MB in the end (delta: -11.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-09-22 14:32:36,294 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:32:36,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.63 ms. Allocated memory is still 62.9 MB. Free memory was 41.7 MB in the beginning and 37.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-09-22 14:32:36,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 62.9 MB. Free memory was 37.3 MB in the beginning and 35.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:32:36,295 INFO L168 Benchmark]: Boogie Preprocessor took 29.59 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 34.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:32:36,295 INFO L168 Benchmark]: RCFGBuilder took 470.53 ms. Allocated memory is still 62.9 MB. Free memory was 33.9 MB in the beginning and 34.5 MB in the end (delta: -564.6 kB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-09-22 14:32:36,295 INFO L168 Benchmark]: TraceAbstraction took 2308.30 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 34.2 MB in the beginning and 56.3 MB in the end (delta: -22.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-09-22 14:32:36,296 INFO L168 Benchmark]: Witness Printer took 40.13 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 53.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:32:36,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.63 ms. Allocated memory is still 62.9 MB. Free memory was 41.7 MB in the beginning and 37.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 62.9 MB. Free memory was 37.3 MB in the beginning and 35.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.59 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 34.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 470.53 ms. Allocated memory is still 62.9 MB. Free memory was 33.9 MB in the beginning and 34.5 MB in the end (delta: -564.6 kB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2308.30 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 34.2 MB in the beginning and 56.3 MB in the end (delta: -22.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Witness Printer took 40.13 ms. Allocated memory is still 92.3 MB. Free memory was 56.3 MB in the beginning and 53.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1736.4ms, 52 PlacesBefore, 17 PlacesAfterwards, 50 TransitionsBefore, 14 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 883 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 620, positive: 541, positive conditional: 0, positive unconditional: 541, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 310, positive: 288, positive conditional: 0, positive unconditional: 288, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 310, positive: 274, positive conditional: 0, positive unconditional: 274, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 60, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 620, positive: 253, positive conditional: 0, positive unconditional: 253, negative: 57, negative conditional: 0, negative unconditional: 57, unknown: 310, unknown conditional: 0, unknown unconditional: 310] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2223.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 5.2ms, AutomataDifference: 72.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1774.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 19 SDslu, 20 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.2ms SsaConstructionTime, 58.1ms SatisfiabilityAnalysisTime, 136.9ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-09-22 14:32:36,323 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...