./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0217_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0217_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:02:14,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:02:14,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:02:14,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:02:14,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:02:14,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:02:14,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:02:14,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:02:14,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:02:14,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:02:14,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:02:14,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:02:14,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:02:14,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:02:14,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:02:14,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:02:14,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:02:14,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:02:14,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:02:14,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:02:14,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:02:14,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:02:14,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:02:14,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:02:14,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:02:14,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:02:14,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:02:14,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:02:14,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:02:14,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:02:14,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:02:14,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:02:14,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:02:14,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:02:14,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:02:14,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:02:14,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:02:14,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:02:14,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:02:14,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:02:14,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:02:14,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:02:14,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:02:14,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:02:14,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:02:14,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:02:14,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:02:14,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:02:14,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:02:14,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:02:14,256 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:02:14,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:02:14,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:02:14,258 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:02:14,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:02:14,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:02:14,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:02:14,258 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:02:14,259 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:02:14,259 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:02:14,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:02:14,259 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:02:14,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:02:14,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:02:14,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:02:14,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:02:14,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:02:14,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:02:14,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:02:14,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:02:14,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:02:14,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:02:14,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:02:14,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a [2021-12-15 14:02:14,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:02:14,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:02:14,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:02:14,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:02:14,520 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:02:14,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0217_1.i [2021-12-15 14:02:14,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71750829f/b319875d79134c7e92befd625bb83f90/FLAGab73a9de9 [2021-12-15 14:02:15,050 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:02:15,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0217_1.i [2021-12-15 14:02:15,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71750829f/b319875d79134c7e92befd625bb83f90/FLAGab73a9de9 [2021-12-15 14:02:15,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71750829f/b319875d79134c7e92befd625bb83f90 [2021-12-15 14:02:15,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:02:15,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:02:15,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:02:15,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:02:15,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:02:15,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a31b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15, skipping insertion in model container [2021-12-15 14:02:15,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:02:15,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:02:15,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:02:15,747 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:02:15,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:02:15,820 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:02:15,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15 WrapperNode [2021-12-15 14:02:15,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:02:15,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:02:15,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:02:15,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:02:15,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,877 INFO L137 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 257 [2021-12-15 14:02:15,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:02:15,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:02:15,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:02:15,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:02:15,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:02:15,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:02:15,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:02:15,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:02:15,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (1/1) ... [2021-12-15 14:02:15,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:02:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:02:15,977 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) [2021-12-15 14:02:15,978 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 [2021-12-15 14:02:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-15 14:02:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-15 14:02:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 14:02:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:02:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:02:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:02:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:02:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:02:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 14:02:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:02:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:02:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:02:16,148 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:02:16,149 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:02:16,500 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:02:16,507 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:02:16,507 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-15 14:02:16,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:02:16 BoogieIcfgContainer [2021-12-15 14:02:16,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:02:16,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:02:16,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:02:16,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:02:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:02:15" (1/3) ... [2021-12-15 14:02:16,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3424b3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:02:16, skipping insertion in model container [2021-12-15 14:02:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:15" (2/3) ... [2021-12-15 14:02:16,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3424b3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:02:16, skipping insertion in model container [2021-12-15 14:02:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:02:16" (3/3) ... [2021-12-15 14:02:16,517 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217_1.i [2021-12-15 14:02:16,522 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:02:16,522 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-15 14:02:16,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:02:16,562 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-15 14:02:16,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-15 14:02:16,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 170 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:02:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:02:16,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:16,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:02:16,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:02:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1046105098, now seen corresponding path program 1 times [2021-12-15 14:02:16,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:02:16,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016002961] [2021-12-15 14:02:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:16,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:02:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:16,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:02:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016002961] [2021-12-15 14:02:16,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016002961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:16,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:16,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:02:16,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496588944] [2021-12-15 14:02:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:16,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 14:02:16,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:02:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 14:02:16,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:02:16,804 INFO L87 Difference]: Start difference. First operand has 174 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 170 states have internal predecessors, (201), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-15 14:02:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:16,838 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2021-12-15 14:02:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 14:02:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-12-15 14:02:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:16,850 INFO L225 Difference]: With dead ends: 174 [2021-12-15 14:02:16,850 INFO L226 Difference]: Without dead ends: 172 [2021-12-15 14:02:16,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 14:02:16,856 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:16,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:02:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-15 14:02:16,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-12-15 14:02:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 102 states have (on average 1.8823529411764706) internal successors, (192), 168 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:02:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2021-12-15 14:02:16,922 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 6 [2021-12-15 14:02:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:16,923 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2021-12-15 14:02:16,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-15 14:02:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2021-12-15 14:02:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:02:16,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:16,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:02:16,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 14:02:16,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:02:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 594388414, now seen corresponding path program 1 times [2021-12-15 14:02:16,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:02:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353145082] [2021-12-15 14:02:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:16,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:02:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:17,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:02:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353145082] [2021-12-15 14:02:17,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353145082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:17,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:17,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 14:02:17,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986335553] [2021-12-15 14:02:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:17,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:02:17,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:02:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:02:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:02:17,010 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-15 14:02:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:17,069 INFO L93 Difference]: Finished difference Result 339 states and 387 transitions. [2021-12-15 14:02:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:02:17,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-12-15 14:02:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:17,075 INFO L225 Difference]: With dead ends: 339 [2021-12-15 14:02:17,075 INFO L226 Difference]: Without dead ends: 339 [2021-12-15 14:02:17,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:02:17,080 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 185 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:17,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 727 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:02:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-15 14:02:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 174. [2021-12-15 14:02:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 104 states have (on average 1.8653846153846154) internal successors, (194), 170 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:02:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 198 transitions. [2021-12-15 14:02:17,097 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 198 transitions. Word has length 8 [2021-12-15 14:02:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:17,097 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 198 transitions. [2021-12-15 14:02:17,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-12-15 14:02:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 198 transitions. [2021-12-15 14:02:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:02:17,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:17,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:02:17,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 14:02:17,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:02:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 592541372, now seen corresponding path program 1 times [2021-12-15 14:02:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:02:17,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071623507] [2021-12-15 14:02:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:17,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:02:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:17,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:02:17,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071623507] [2021-12-15 14:02:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071623507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:17,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:17,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-15 14:02:17,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097568247] [2021-12-15 14:02:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:17,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:02:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:02:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:02:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:02:17,192 INFO L87 Difference]: Start difference. First operand 174 states and 198 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-15 14:02:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:17,411 INFO L93 Difference]: Finished difference Result 337 states and 384 transitions. [2021-12-15 14:02:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:02:17,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-15 14:02:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:17,414 INFO L225 Difference]: With dead ends: 337 [2021-12-15 14:02:17,415 INFO L226 Difference]: Without dead ends: 337 [2021-12-15 14:02:17,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:02:17,421 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 176 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:17,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 261 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 14:02:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-15 14:02:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 241. [2021-12-15 14:02:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 168 states have (on average 1.8571428571428572) internal successors, (312), 234 states have internal predecessors, (312), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 14:02:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2021-12-15 14:02:17,456 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 8 [2021-12-15 14:02:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:17,456 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2021-12-15 14:02:17,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-15 14:02:17,457 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2021-12-15 14:02:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 14:02:17,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:17,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 14:02:17,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 14:02:17,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:02:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash 592541373, now seen corresponding path program 1 times [2021-12-15 14:02:17,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 14:02:17,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447120335] [2021-12-15 14:02:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:17,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 14:02:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:17,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 14:02:17,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447120335] [2021-12-15 14:02:17,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447120335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:17,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:17,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:02:17,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732875627] [2021-12-15 14:02:17,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:17,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:02:17,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 14:02:17,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:02:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:02:17,609 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-15 14:02:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:02:17,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 14:02:17,645 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 49 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:17,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 56 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:02:17,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 14:02:17,649 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-12-15 14:02:17,656 INFO L158 Benchmark]: Toolchain (without parser) took 2258.88ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 65.3MB in the beginning and 78.2MB in the end (delta: -12.9MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-12-15 14:02:17,657 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 77.6MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:02:17,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.69ms. Allocated memory is still 96.5MB. Free memory was 65.1MB in the beginning and 43.6MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 14:02:17,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.44ms. Allocated memory is still 96.5MB. Free memory was 43.5MB in the beginning and 40.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:02:17,658 INFO L158 Benchmark]: Boogie Preprocessor took 62.47ms. Allocated memory is still 96.5MB. Free memory was 40.6MB in the beginning and 72.7MB in the end (delta: -32.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-15 14:02:17,658 INFO L158 Benchmark]: RCFGBuilder took 568.63ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 47.0MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 14:02:17,658 INFO L158 Benchmark]: TraceAbstraction took 1143.99ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 46.4MB in the beginning and 78.2MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:02:17,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 77.6MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.69ms. Allocated memory is still 96.5MB. Free memory was 65.1MB in the beginning and 43.6MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.44ms. Allocated memory is still 96.5MB. Free memory was 43.5MB in the beginning and 40.6MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.47ms. Allocated memory is still 96.5MB. Free memory was 40.6MB in the beginning and 72.7MB in the end (delta: -32.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * RCFGBuilder took 568.63ms. Allocated memory is still 96.5MB. Free memory was 72.7MB in the beginning and 47.0MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1143.99ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 46.4MB in the beginning and 78.2MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:02:17,699 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0217_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:02:19,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:02:19,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:02:19,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:02:19,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:02:19,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:02:19,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:02:19,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:02:19,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:02:19,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:02:19,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:02:19,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:02:19,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:02:19,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:02:19,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:02:19,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:02:19,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:02:19,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:02:19,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:02:19,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:02:19,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:02:19,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:02:19,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:02:19,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:02:19,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:02:19,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:02:19,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:02:19,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:02:19,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:02:19,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:02:19,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:02:19,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:02:19,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:02:19,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:02:19,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:02:19,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:02:19,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:02:19,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:02:19,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:02:19,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:02:19,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:02:19,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:02:19,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:02:19,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:02:19,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:02:19,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:02:19,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:02:19,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:02:19,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:02:19,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:02:19,870 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:02:19,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:02:19,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:02:19,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:02:19,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:02:19,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:02:19,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:02:19,872 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:02:19,872 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:02:19,872 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:02:19,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:02:19,873 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:02:19,873 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:02:19,873 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:02:19,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:02:19,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:02:19,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:02:19,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:02:19,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:02:19,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:02:19,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:02:19,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:02:19,875 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:02:19,875 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:02:19,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:02:19,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:02:19,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4aac8fd1b71e0bd84f9ab8e5c238dc6bf3a295fcb9cebe504ba6d0c9a6a7b7a [2021-12-15 14:02:20,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:02:20,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:02:20,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:02:20,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:02:20,199 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:02:20,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0217_1.i [2021-12-15 14:02:20,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5fc6895/2f068a2f765345d88be28fb179717cde/FLAG8941b297b [2021-12-15 14:02:20,772 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:02:20,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0217_1.i [2021-12-15 14:02:20,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5fc6895/2f068a2f765345d88be28fb179717cde/FLAG8941b297b [2021-12-15 14:02:21,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5fc6895/2f068a2f765345d88be28fb179717cde [2021-12-15 14:02:21,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:02:21,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:02:21,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:02:21,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:02:21,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:02:21,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f2874f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21, skipping insertion in model container [2021-12-15 14:02:21,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:02:21,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:02:21,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:02:21,511 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:02:21,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:02:21,591 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:02:21,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21 WrapperNode [2021-12-15 14:02:21,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:02:21,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:02:21,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:02:21,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:02:21,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,685 INFO L137 Inliner]: procedures = 182, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 236 [2021-12-15 14:02:21,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:02:21,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:02:21,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:02:21,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:02:21,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:02:21,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:02:21,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:02:21,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:02:21,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (1/1) ... [2021-12-15 14:02:21,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:02:21,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:02:21,794 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) [2021-12-15 14:02:21,802 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 [2021-12-15 14:02:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-15 14:02:21,831 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-15 14:02:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:02:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:02:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:02:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:02:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 14:02:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:02:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 14:02:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:02:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:02:21,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:02:21,987 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:02:21,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:02:22,740 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:02:22,747 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:02:22,748 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-15 14:02:22,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:02:22 BoogieIcfgContainer [2021-12-15 14:02:22,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:02:22,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:02:22,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:02:22,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:02:22,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:02:21" (1/3) ... [2021-12-15 14:02:22,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100aa2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:02:22, skipping insertion in model container [2021-12-15 14:02:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:02:21" (2/3) ... [2021-12-15 14:02:22,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100aa2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:02:22, skipping insertion in model container [2021-12-15 14:02:22,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:02:22" (3/3) ... [2021-12-15 14:02:22,774 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217_1.i [2021-12-15 14:02:22,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:02:22,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-15 14:02:22,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:02:22,829 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-12-15 14:02:22,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-15 14:02:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 164 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-15 14:02:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:02:22,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:22,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:02:22,859 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:02:22,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1037802347, now seen corresponding path program 1 times [2021-12-15 14:02:22,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:02:22,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284522614] [2021-12-15 14:02:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:22,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:02:22,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:02:22,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:02:22,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 14:02:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:22,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 14:02:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:02:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:23,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:02:23,069 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:02:23,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284522614] [2021-12-15 14:02:23,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284522614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:23,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:23,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-15 14:02:23,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450393124] [2021-12-15 14:02:23,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:23,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:02:23,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:02:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:02:23,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:02:23,117 INFO L87 Difference]: Start difference. First operand has 168 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 164 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-15 14:02:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:02:23,596 INFO L93 Difference]: Finished difference Result 327 states and 368 transitions. [2021-12-15 14:02:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:02:23,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-12-15 14:02:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:02:23,607 INFO L225 Difference]: With dead ends: 327 [2021-12-15 14:02:23,607 INFO L226 Difference]: Without dead ends: 323 [2021-12-15 14:02:23,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:02:23,612 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 171 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:23,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 245 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 14:02:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-15 14:02:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 227. [2021-12-15 14:02:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 154 states have (on average 1.896103896103896) internal successors, (292), 220 states have internal predecessors, (292), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-15 14:02:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2021-12-15 14:02:23,663 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 6 [2021-12-15 14:02:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:02:23,664 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2021-12-15 14:02:23,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-12-15 14:02:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2021-12-15 14:02:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 14:02:23,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:02:23,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 14:02:23,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 14:02:23,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:02:23,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-15 14:02:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:02:23,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1037802348, now seen corresponding path program 1 times [2021-12-15 14:02:23,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:02:23,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496214504] [2021-12-15 14:02:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:02:23,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:02:23,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:02:23,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 14:02:23,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 14:02:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:02:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 14:02:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:02:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:02:24,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:02:24,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:02:24,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496214504] [2021-12-15 14:02:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496214504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:02:24,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:02:24,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:02:24,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534082433] [2021-12-15 14:02:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:02:24,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:02:24,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:02:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:02:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:02:24,015 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-15 14:02:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:02:24,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:02:24,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:02:24,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 14:02:24,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:02:24,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:02:24,247 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-12-15 14:02:24,251 INFO L158 Benchmark]: Toolchain (without parser) took 3151.38ms. Allocated memory was 48.2MB in the beginning and 79.7MB in the end (delta: 31.5MB). Free memory was 22.6MB in the beginning and 34.7MB in the end (delta: -12.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2021-12-15 14:02:24,251 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:02:24,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.74ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.4MB in the beginning and 31.9MB in the end (delta: -9.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-15 14:02:24,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.26ms. Allocated memory is still 60.8MB. Free memory was 31.7MB in the beginning and 42.0MB in the end (delta: -10.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-12-15 14:02:24,253 INFO L158 Benchmark]: Boogie Preprocessor took 72.13ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 39.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:02:24,253 INFO L158 Benchmark]: RCFGBuilder took 989.22ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 24.8MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 14:02:24,253 INFO L158 Benchmark]: TraceAbstraction took 1482.11ms. Allocated memory is still 79.7MB. Free memory was 59.0MB in the beginning and 34.7MB in the end (delta: 24.4MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-12-15 14:02:24,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.5MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.74ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.4MB in the beginning and 31.9MB in the end (delta: -9.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.26ms. Allocated memory is still 60.8MB. Free memory was 31.7MB in the beginning and 42.0MB in the end (delta: -10.3MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.13ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 39.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 989.22ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 24.8MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1482.11ms. Allocated memory is still 79.7MB. Free memory was 59.0MB in the beginning and 34.7MB in the end (delta: 24.4MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:02:24,301 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable