./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/basename-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/busybox-1.22.0/basename-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:43:32,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:43:32,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:43:32,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:43:32,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:43:32,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:43:32,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:43:32,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:43:32,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:43:32,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:43:32,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:43:32,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:43:32,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:43:32,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:43:32,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:43:32,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:43:32,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:43:32,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:43:32,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:43:32,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:43:32,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:43:32,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:43:32,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:43:32,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:43:32,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:43:32,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:43:32,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:43:32,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:43:32,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:43:32,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:43:32,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:43:32,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:43:32,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:43:32,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:43:32,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:43:32,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:43:32,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:43:32,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:43:32,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:43:32,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:43:32,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:43:32,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-12-15 16:43:32,519 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:43:32,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:43:32,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:43:32,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:43:32,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:43:32,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:43:32,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:43:32,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:43:32,521 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:43:32,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:43:32,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:43:32,523 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:43:32,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:43:32,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:43:32,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:43:32,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:43:32,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:43:32,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:43:32,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:43:32,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:43:32,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:43:32,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:43:32,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2021-12-15 16:43:32,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:43:32,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:43:32,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:43:32,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:43:32,726 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:43:32,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-12-15 16:43:32,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a286389/28b586a2ca894708afb93c4194ae4743/FLAGf8bec0693 [2021-12-15 16:43:33,167 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:43:33,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-12-15 16:43:33,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a286389/28b586a2ca894708afb93c4194ae4743/FLAGf8bec0693 [2021-12-15 16:43:33,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7a286389/28b586a2ca894708afb93c4194ae4743 [2021-12-15 16:43:33,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:43:33,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:43:33,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:43:33,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:43:33,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:43:33,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:43:33" (1/1) ... [2021-12-15 16:43:33,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50dda322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:33, skipping insertion in model container [2021-12-15 16:43:33,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:43:33" (1/1) ... [2021-12-15 16:43:33,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:43:33,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:43:33,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-12-15 16:43:33,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:43:33,977 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-15 16:43:33,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68e06dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:33, skipping insertion in model container [2021-12-15 16:43:33,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:43:33,978 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:43:33,980 INFO L158 Benchmark]: Toolchain (without parser) took 477.79ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.8MB in the beginning and 79.9MB in the end (delta: -18.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 16:43:33,981 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 51.2MB in the beginning and 51.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:43:33,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.78ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.5MB in the beginning and 79.9MB in the end (delta: -18.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 16:43:33,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 51.2MB in the beginning and 51.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.78ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.5MB in the beginning and 79.9MB in the end (delta: -18.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/busybox-1.22.0/basename-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:43:35,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:43:35,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:43:35,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:43:35,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:43:35,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:43:35,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:43:35,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:43:35,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:43:35,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:43:35,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:43:35,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:43:35,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:43:35,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:43:35,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:43:35,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:43:35,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:43:35,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:43:35,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:43:35,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:43:35,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:43:35,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:43:35,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:43:35,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:43:35,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:43:35,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:43:35,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:43:35,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:43:35,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:43:35,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:43:35,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:43:35,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:43:35,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:43:35,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:43:35,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:43:35,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:43:35,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:43:35,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:43:35,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:43:35,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:43:35,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:43:35,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2021-12-15 16:43:35,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:43:35,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:43:35,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:43:35,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:43:35,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:43:35,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:43:35,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:43:35,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:43:35,457 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:43:35,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:43:35,458 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:43:35,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:43:35,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:43:35,458 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:43:35,458 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:43:35,459 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:43:35,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:43:35,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:43:35,459 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:43:35,459 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:43:35,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:43:35,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:43:35,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:43:35,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:43:35,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:43:35,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:43:35,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:43:35,460 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:43:35,460 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:43:35,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:43:35,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:43:35,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2021-12-15 16:43:35,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:43:35,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:43:35,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:43:35,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:43:35,706 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:43:35,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-12-15 16:43:35,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6418903/6d55025d83964bd39a82d484bd0c348e/FLAG48c96e396 [2021-12-15 16:43:36,221 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:43:36,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2021-12-15 16:43:36,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6418903/6d55025d83964bd39a82d484bd0c348e/FLAG48c96e396 [2021-12-15 16:43:36,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6418903/6d55025d83964bd39a82d484bd0c348e [2021-12-15 16:43:36,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:43:36,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:43:36,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:43:36,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:43:36,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:43:36,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:43:36" (1/1) ... [2021-12-15 16:43:36,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560946eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:36, skipping insertion in model container [2021-12-15 16:43:36,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:43:36" (1/1) ... [2021-12-15 16:43:36,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:43:36,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:43:36,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-12-15 16:43:36,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:43:36,988 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:43:37,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:43:37,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-12-15 16:43:37,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:43:37,065 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:43:37,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2021-12-15 16:43:37,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:43:37,241 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:43:37,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37 WrapperNode [2021-12-15 16:43:37,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:43:37,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:43:37,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:43:37,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:43:37,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,336 INFO L137 Inliner]: procedures = 352, calls = 112, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 383 [2021-12-15 16:43:37,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:43:37,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:43:37,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:43:37,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:43:37,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:43:37,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:43:37,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:43:37,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:43:37,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (1/1) ... [2021-12-15 16:43:37,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:43:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:43:37,436 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 16:43:37,457 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 16:43:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:43:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:43:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 16:43:37,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 16:43:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:43:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 16:43:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:43:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:43:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:43:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-15 16:43:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:43:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:43:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:43:37,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:43:37,702 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:43:37,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:43:38,486 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:43:38,490 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:43:38,491 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-15 16:43:38,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:43:38 BoogieIcfgContainer [2021-12-15 16:43:38,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:43:38,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:43:38,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:43:38,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:43:38,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:43:36" (1/3) ... [2021-12-15 16:43:38,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e17aa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:43:38, skipping insertion in model container [2021-12-15 16:43:38,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:43:37" (2/3) ... [2021-12-15 16:43:38,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e17aa9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:43:38, skipping insertion in model container [2021-12-15 16:43:38,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:43:38" (3/3) ... [2021-12-15 16:43:38,500 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-1.i [2021-12-15 16:43:38,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:43:38,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2021-12-15 16:43:38,536 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:43:38,542 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 16:43:38,542 INFO L340 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2021-12-15 16:43:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 147 states have (on average 1.9319727891156462) internal successors, (284), 239 states have internal predecessors, (284), 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 16:43:38,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:43:38,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:43:38,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:43:38,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-15 16:43:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:43:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-15 16:43:38,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:43:38,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966013010] [2021-12-15 16:43:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:43:38,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:43:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:43:38,578 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 16:43:38,585 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 16:43:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:43:38,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:43:38,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:43:38,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:43:38,804 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 16:43:38,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:43:38,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:43:38,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966013010] [2021-12-15 16:43:38,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966013010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:43:38,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:43:38,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:43:38,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571152514] [2021-12-15 16:43:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:43:38,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:43:38,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:43:38,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:43:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:43:38,843 INFO L87 Difference]: Start difference. First operand has 243 states, 147 states have (on average 1.9319727891156462) internal successors, (284), 239 states have internal predecessors, (284), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:43:39,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:43:39,199 INFO L93 Difference]: Finished difference Result 251 states and 285 transitions. [2021-12-15 16:43:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:43:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-15 16:43:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:43:39,209 INFO L225 Difference]: With dead ends: 251 [2021-12-15 16:43:39,209 INFO L226 Difference]: Without dead ends: 249 [2021-12-15 16:43:39,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:43:39,214 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 239 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 16:43:39,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 207 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 16:43:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-15 16:43:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 233. [2021-12-15 16:43:39,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 142 states have (on average 1.8450704225352113) internal successors, (262), 229 states have internal predecessors, (262), 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 16:43:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2021-12-15 16:43:39,259 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 3 [2021-12-15 16:43:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:43:39,260 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2021-12-15 16:43:39,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:43:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2021-12-15 16:43:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:43:39,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:43:39,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:43:39,269 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 16:43:39,461 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 16:43:39,461 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-15 16:43:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:43:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-15 16:43:39,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:43:39,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508244534] [2021-12-15 16:43:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:43:39,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:43:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:43:39,464 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 16:43:39,465 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 16:43:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:43:39,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:43:39,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:43:39,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:43:39,584 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 16:43:39,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:43:39,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:43:39,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508244534] [2021-12-15 16:43:39,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508244534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:43:39,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:43:39,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:43:39,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642684367] [2021-12-15 16:43:39,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:43:39,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:43:39,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:43:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:43:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:43:39,590 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:43:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:43:40,015 INFO L93 Difference]: Finished difference Result 232 states and 265 transitions. [2021-12-15 16:43:40,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:43:40,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-12-15 16:43:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:43:40,019 INFO L225 Difference]: With dead ends: 232 [2021-12-15 16:43:40,019 INFO L226 Difference]: Without dead ends: 232 [2021-12-15 16:43:40,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:43:40,020 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 9 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 16:43:40,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 432 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 16:43:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-15 16:43:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-12-15 16:43:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.8380281690140845) internal successors, (261), 228 states have internal predecessors, (261), 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 16:43:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 265 transitions. [2021-12-15 16:43:40,028 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 265 transitions. Word has length 3 [2021-12-15 16:43:40,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:43:40,028 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 265 transitions. [2021-12-15 16:43:40,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 16:43:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 265 transitions. [2021-12-15 16:43:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:43:40,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:43:40,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:43:40,038 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 16:43:40,237 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 16:43:40,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 88 more)] === [2021-12-15 16:43:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:43:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-12-15 16:43:40,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:43:40,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483462562] [2021-12-15 16:43:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:43:40,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:43:40,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:43:40,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:43:40,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 16:43:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:43:40,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:43:40,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:43:40,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-15 16:43:40,409 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 16:43:40,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:43:40,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:43:40,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483462562] [2021-12-15 16:43:40,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483462562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:43:40,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:43:40,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:43:40,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604180766] [2021-12-15 16:43:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:43:40,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:43:40,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:43:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:43:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:43:40,411 INFO L87 Difference]: Start difference. First operand 232 states and 265 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 16:43:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:43:40,450 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 16:43:40,450 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:43:40,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:43:40,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-15 16:43:40,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:43:40,652 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 16:43:40,655 INFO L158 Benchmark]: Toolchain (without parser) took 4105.96ms. Allocated memory was 62.9MB in the beginning and 123.7MB in the end (delta: 60.8MB). Free memory was 40.3MB in the beginning and 72.4MB in the end (delta: -32.2MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2021-12-15 16:43:40,655 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:43:40,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.75ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 40.1MB in the beginning and 38.0MB in the end (delta: 2.1MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-12-15 16:43:40,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.73ms. Allocated memory is still 81.8MB. Free memory was 38.0MB in the beginning and 59.6MB in the end (delta: -21.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-15 16:43:40,656 INFO L158 Benchmark]: Boogie Preprocessor took 62.03ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 55.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 16:43:40,656 INFO L158 Benchmark]: RCFGBuilder took 1090.61ms. Allocated memory is still 81.8MB. Free memory was 55.4MB in the beginning and 43.3MB in the end (delta: 12.1MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2021-12-15 16:43:40,656 INFO L158 Benchmark]: TraceAbstraction took 2161.33ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 42.8MB in the beginning and 72.4MB in the end (delta: -29.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-12-15 16:43:40,657 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 45.3MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.75ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 40.1MB in the beginning and 38.0MB in the end (delta: 2.1MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.73ms. Allocated memory is still 81.8MB. Free memory was 38.0MB in the beginning and 59.6MB in the end (delta: -21.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.03ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 55.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1090.61ms. Allocated memory is still 81.8MB. Free memory was 55.4MB in the beginning and 43.3MB in the end (delta: 12.1MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2161.33ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 42.8MB in the beginning and 72.4MB in the end (delta: -29.6MB). Peak memory consumption was 13.0MB. 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 16:43:40,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable