./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e8d55036 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/ntdrivers/floppy.i.cil-3.c -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 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:32:40,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:32:40,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:32:40,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:32:40,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:32:40,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:32:40,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:32:40,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:32:40,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:32:40,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:32:40,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:32:40,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:32:40,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:32:40,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:32:40,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:32:40,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:32:40,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:32:40,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:32:40,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:32:40,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:32:40,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:32:40,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:32:40,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:32:40,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:32:40,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:32:40,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:32:40,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:32:40,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:32:40,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:32:40,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:32:40,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:32:40,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:32:40,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:32:40,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:32:40,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:32:40,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:32:40,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:32:40,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:32:40,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:32:40,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:32:40,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:32:40,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 22:32:40,930 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:32:40,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:32:40,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:32:40,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:32:40,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:32:40,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:32:40,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:32:40,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:32:40,933 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:32:40,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:32:40,933 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:32:40,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:32:40,935 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:32:40,935 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:32:40,935 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:32:40,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:32:40,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:32:40,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:32:40,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:32:40,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:32:40,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:32:40,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 22:32:40,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 22:32:40,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:32:40,936 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:32:40,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:32:40,937 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:32:40,937 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-15 22:32:41,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:32:41,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:32:41,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:32:41,153 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:32:41,153 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:32:41,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 22:32:42,188 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:32:42,465 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:32:42,466 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 22:32:42,502 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8954e1560/a6c398d64a8a4b42ae5e927c3988e377/FLAGa45da6bd8 [2023-02-15 22:32:42,515 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8954e1560/a6c398d64a8a4b42ae5e927c3988e377 [2023-02-15 22:32:42,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:32:42,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:32:42,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:32:42,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:32:42,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:32:42,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:32:42" (1/1) ... [2023-02-15 22:32:42,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c525f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:42, skipping insertion in model container [2023-02-15 22:32:42,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:32:42" (1/1) ... [2023-02-15 22:32:42,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:32:42,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:32:43,273 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 22:32:43,302 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 22:32:43,312 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 22:32:43,327 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-02-15 22:32:43,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:32:43,691 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-15 22:32:43,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@17b290e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:43, skipping insertion in model container [2023-02-15 22:32:43,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:32:43,692 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 22:32:43,693 INFO L158 Benchmark]: Toolchain (without parser) took 1173.35ms. Allocated memory is still 190.8MB. Free memory was 136.9MB in the beginning and 122.5MB in the end (delta: 14.4MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2023-02-15 22:32:43,694 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 22:32:43,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1170.81ms. Allocated memory is still 190.8MB. Free memory was 136.3MB in the beginning and 122.5MB in the end (delta: 13.8MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2023-02-15 22:32:43,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 107.0MB. Free memory is still 57.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1170.81ms. Allocated memory is still 190.8MB. Free memory was 136.3MB in the beginning and 122.5MB in the end (delta: 13.8MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2246]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/ntdrivers/floppy.i.cil-3.c -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 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 22:32:45,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 22:32:45,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 22:32:45,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 22:32:45,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 22:32:45,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 22:32:45,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 22:32:45,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 22:32:45,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 22:32:45,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 22:32:45,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 22:32:45,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 22:32:45,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 22:32:45,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 22:32:45,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 22:32:45,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 22:32:45,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 22:32:45,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 22:32:45,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 22:32:45,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 22:32:45,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 22:32:45,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 22:32:45,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 22:32:45,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 22:32:45,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 22:32:45,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 22:32:45,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 22:32:45,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 22:32:45,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 22:32:45,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 22:32:45,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 22:32:45,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 22:32:45,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 22:32:45,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 22:32:45,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 22:32:45,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 22:32:45,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 22:32:45,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 22:32:45,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 22:32:45,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 22:32:45,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 22:32:45,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 22:32:45,393 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 22:32:45,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 22:32:45,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 22:32:45,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 22:32:45,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 22:32:45,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 22:32:45,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 22:32:45,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 22:32:45,396 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 22:32:45,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 22:32:45,397 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 22:32:45,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 22:32:45,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 22:32:45,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 22:32:45,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 22:32:45,398 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 22:32:45,398 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 22:32:45,398 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 22:32:45,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 22:32:45,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 22:32:45,398 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 22:32:45,399 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 22:32:45,399 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 22:32:45,399 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 22:32:45,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 22:32:45,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 22:32:45,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 22:32:45,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:32:45,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 22:32:45,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 22:32:45,400 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 22:32:45,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 22:32:45,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 22:32:45,401 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 22:32:45,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 22:32:45,401 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 22:32:45,401 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 22:32:45,402 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-15 22:32:45,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 22:32:45,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 22:32:45,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 22:32:45,748 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 22:32:45,748 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 22:32:45,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 22:32:46,856 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 22:32:47,249 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 22:32:47,250 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 22:32:47,286 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc570fe0/dd12c344e0f54b6db313f1b0b7147fd3/FLAG8ca38f2e1 [2023-02-15 22:32:47,302 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc570fe0/dd12c344e0f54b6db313f1b0b7147fd3 [2023-02-15 22:32:47,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 22:32:47,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 22:32:47,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 22:32:47,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 22:32:47,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 22:32:47,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:32:47" (1/1) ... [2023-02-15 22:32:47,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f14d54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:47, skipping insertion in model container [2023-02-15 22:32:47,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:32:47" (1/1) ... [2023-02-15 22:32:47,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 22:32:47,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:32:48,088 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 22:32:48,116 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 22:32:48,128 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 22:32:48,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:32:48,563 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 22:32:48,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 22:32:48,640 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 22:32:48,646 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 22:32:48,648 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 22:32:48,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:32:48,854 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 22:32:48,889 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 22:32:48,896 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 22:32:48,899 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 22:32:49,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 22:32:49,109 INFO L208 MainTranslator]: Completed translation [2023-02-15 22:32:49,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49 WrapperNode [2023-02-15 22:32:49,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 22:32:49,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 22:32:49,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 22:32:49,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 22:32:49,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,281 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2023-02-15 22:32:49,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 22:32:49,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 22:32:49,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 22:32:49,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 22:32:49,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,479 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 22:32:49,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 22:32:49,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 22:32:49,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 22:32:49,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (1/1) ... [2023-02-15 22:32:49,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 22:32:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 22:32:49,535 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) [2023-02-15 22:32:49,553 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 [2023-02-15 22:32:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-15 22:32:49,566 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-15 22:32:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-15 22:32:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 22:32:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-15 22:32:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-15 22:32:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-15 22:32:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-15 22:32:49,567 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-15 22:32:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-15 22:32:49,567 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-15 22:32:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-15 22:32:49,567 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-15 22:32:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-15 22:32:49,568 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-15 22:32:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-15 22:32:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-15 22:32:49,569 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-15 22:32:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-02-15 22:32:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-15 22:32:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-15 22:32:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-15 22:32:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-02-15 22:32:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-15 22:32:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-15 22:32:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-15 22:32:49,570 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-15 22:32:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-15 22:32:49,571 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-15 22:32:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-15 22:32:49,571 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-15 22:32:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 22:32:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 22:32:49,571 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-15 22:32:49,571 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-15 22:32:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-15 22:32:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-15 22:32:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 22:32:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 22:32:49,572 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-15 22:32:49,572 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-15 22:32:49,573 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 22:32:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-15 22:32:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-15 22:32:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-15 22:32:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-15 22:32:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-15 22:32:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-15 22:32:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-15 22:32:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-15 22:32:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-15 22:32:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 22:32:49,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 22:32:50,090 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 22:32:50,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 22:32:50,151 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:50,160 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 22:32:50,161 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 22:32:50,165 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:50,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 22:32:50,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 22:32:50,573 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:50,585 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-15 22:32:50,586 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-15 22:32:50,590 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:52,703 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:52,718 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:52,752 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-15 22:32:52,752 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-15 22:32:52,754 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:52,755 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:52,755 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:53,076 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-15 22:32:53,076 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 22:32:53,077 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 22:32:53,077 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-15 22:32:53,077 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-15 22:32:53,077 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-15 22:32:53,080 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:53,087 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:53,101 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,050 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-15 22:32:57,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-15 22:32:57,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-15 22:32:57,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-15 22:32:57,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-15 22:32:57,051 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-15 22:32:57,210 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,368 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 22:32:57,369 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 22:32:57,379 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,381 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,382 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,385 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,386 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,390 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,392 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:32:57,398 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 22:33:00,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-15 22:33:00,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-15 22:33:00,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-15 22:33:00,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-15 22:33:00,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-15 22:33:00,430 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-15 22:33:00,454 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 22:33:00,468 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 22:33:00,469 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 22:33:00,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:33:00 BoogieIcfgContainer [2023-02-15 22:33:00,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 22:33:00,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 22:33:00,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 22:33:00,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 22:33:00,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:32:47" (1/3) ... [2023-02-15 22:33:00,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c77f63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:33:00, skipping insertion in model container [2023-02-15 22:33:00,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:32:49" (2/3) ... [2023-02-15 22:33:00,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c77f63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:33:00, skipping insertion in model container [2023-02-15 22:33:00,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:33:00" (3/3) ... [2023-02-15 22:33:00,481 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2023-02-15 22:33:00,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 22:33:00,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2023-02-15 22:33:00,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 22:33:00,554 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11cc1db0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 22:33:00,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2023-02-15 22:33:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2023-02-15 22:33:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 22:33:00,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:00,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 22:33:00,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2023-02-15 22:33:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:00,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570556338] [2023-02-15 22:33:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:33:00,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:00,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:00,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 22:33:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:33:02,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:33:02,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:02,236 INFO L321 Elim1Store]: treesize reduction 154, result has 27.7 percent of original size [2023-02-15 22:33:02,236 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 18 treesize of output 66 [2023-02-15 22:33:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:02,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:33:02,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:02,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570556338] [2023-02-15 22:33:02,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570556338] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:33:02,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:33:02,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:33:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10201495] [2023-02-15 22:33:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:33:02,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:33:02,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:33:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:33:02,309 INFO L87 Difference]: Start difference. First operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) 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) [2023-02-15 22:33:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:33:05,248 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2023-02-15 22:33:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:33:05,250 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 [2023-02-15 22:33:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:33:05,277 INFO L225 Difference]: With dead ends: 2077 [2023-02-15 22:33:05,278 INFO L226 Difference]: Without dead ends: 2075 [2023-02-15 22:33:05,282 INFO L412 NwaCegarLoop]: 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 [2023-02-15 22:33:05,284 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-15 22:33:05,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-15 22:33:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-02-15 22:33:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-02-15 22:33:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1017 states have (on average 2.1435594886922322) internal successors, (2180), 1991 states have internal predecessors, (2180), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 22:33:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2023-02-15 22:33:05,384 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2023-02-15 22:33:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:33:05,384 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2023-02-15 22:33:05,384 INFO L496 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) [2023-02-15 22:33:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2023-02-15 22:33:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 22:33:05,385 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:05,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 22:33:05,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-15 22:33:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:05,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2023-02-15 22:33:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:05,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285128677] [2023-02-15 22:33:05,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:33:05,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:05,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:05,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:05,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 22:33:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:33:07,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 22:33:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:33:07,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:33:07,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:33:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:33:07,860 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-02-15 22:33:07,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2023-02-15 22:33:07,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-02-15 22:33:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:07,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:33:07,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:07,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285128677] [2023-02-15 22:33:07,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285128677] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:33:07,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:33:07,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:33:07,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134014445] [2023-02-15 22:33:07,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:33:07,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 22:33:07,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:07,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 22:33:07,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 22:33:07,952 INFO L87 Difference]: Start difference. First operand 2075 states and 2347 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) [2023-02-15 22:33:11,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:33:11,523 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2023-02-15 22:33:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:33:11,524 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 [2023-02-15 22:33:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:33:11,530 INFO L225 Difference]: With dead ends: 2073 [2023-02-15 22:33:11,531 INFO L226 Difference]: Without dead ends: 2073 [2023-02-15 22:33:11,532 INFO L412 NwaCegarLoop]: 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 [2023-02-15 22:33:11,535 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:33:11,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-02-15 22:33:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-02-15 22:33:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-02-15 22:33:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1017 states have (on average 2.1415929203539825) internal successors, (2178), 1989 states have internal predecessors, (2178), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 22:33:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2023-02-15 22:33:11,581 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2023-02-15 22:33:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:33:11,581 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2023-02-15 22:33:11,581 INFO L496 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) [2023-02-15 22:33:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2023-02-15 22:33:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 22:33:11,582 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:11,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 22:33:11,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 22:33:11,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:11,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2023-02-15 22:33:11,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:11,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710100030] [2023-02-15 22:33:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:33:11,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:11,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:11,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 22:33:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:33:12,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 22:33:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:12,971 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-02-15 22:33:12,972 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 18 treesize of output 70 [2023-02-15 22:33:13,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 22:33:13,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-15 22:33:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:13,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:33:13,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710100030] [2023-02-15 22:33:13,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710100030] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:33:13,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:33:13,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:33:13,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001436155] [2023-02-15 22:33:13,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:33:13,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:33:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:13,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:33:13,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:33:13,042 INFO L87 Difference]: Start difference. First operand 2073 states and 2345 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2023-02-15 22:33:17,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 22:33:24,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 22:33:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:33:24,202 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2023-02-15 22:33:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:33:24,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 [2023-02-15 22:33:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:33:24,218 INFO L225 Difference]: With dead ends: 2072 [2023-02-15 22:33:24,219 INFO L226 Difference]: Without dead ends: 2072 [2023-02-15 22:33:24,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:33:24,221 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:33:24,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2023-02-15 22:33:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-15 22:33:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-15 22:33:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 22:33:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-15 22:33:24,262 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2023-02-15 22:33:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:33:24,263 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-15 22:33:24,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2023-02-15 22:33:24,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-15 22:33:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 22:33:24,264 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:24,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 22:33:24,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 22:33:24,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:24,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2023-02-15 22:33:24,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:24,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364582079] [2023-02-15 22:33:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:33:24,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:24,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:24,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 22:33:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:33:25,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 22:33:25,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:25,574 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2023-02-15 22:33:25,575 INFO L350 Elim1Store]: Elim1 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 4 case distinctions, treesize of input 18 treesize of output 60 [2023-02-15 22:33:25,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 22:33:25,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 13 treesize of output 9 [2023-02-15 22:33:25,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-02-15 22:33:25,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-15 22:33:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:25,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:33:25,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364582079] [2023-02-15 22:33:25,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364582079] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:33:25,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:33:25,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:33:25,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64548787] [2023-02-15 22:33:25,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:33:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:33:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:33:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:33:25,676 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2023-02-15 22:33:30,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 22:33:37,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 22:33:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:33:37,357 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2023-02-15 22:33:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 22:33:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 [2023-02-15 22:33:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:33:37,363 INFO L225 Difference]: With dead ends: 2071 [2023-02-15 22:33:37,363 INFO L226 Difference]: Without dead ends: 2071 [2023-02-15 22:33:37,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 22:33:37,364 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:33:37,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2023-02-15 22:33:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-02-15 22:33:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2023-02-15 22:33:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1016 states have (on average 2.141732283464567) internal successors, (2176), 1987 states have internal predecessors, (2176), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 22:33:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2023-02-15 22:33:37,394 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2023-02-15 22:33:37,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:33:37,394 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2023-02-15 22:33:37,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2023-02-15 22:33:37,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2023-02-15 22:33:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 22:33:37,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:37,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:33:37,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 22:33:37,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:37,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2023-02-15 22:33:37,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181283146] [2023-02-15 22:33:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:33:37,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:37,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:37,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:37,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 22:33:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:33:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 22:33:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:38,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:33:38,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:38,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181283146] [2023-02-15 22:33:38,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181283146] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:33:38,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:33:38,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:33:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780171199] [2023-02-15 22:33:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:33:38,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:33:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:38,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:33:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:33:38,713 INFO L87 Difference]: Start difference. First operand 2071 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:33:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:33:38,789 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2023-02-15 22:33:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:33:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-15 22:33:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:33:38,796 INFO L225 Difference]: With dead ends: 2074 [2023-02-15 22:33:38,796 INFO L226 Difference]: Without dead ends: 2072 [2023-02-15 22:33:38,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:33:38,797 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:33:38,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7018 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 22:33:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-15 22:33:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-15 22:33:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 22:33:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-15 22:33:38,834 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2023-02-15 22:33:38,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:33:38,834 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-15 22:33:38,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:33:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-15 22:33:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 22:33:38,835 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:38,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:33:38,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 22:33:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:39,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2023-02-15 22:33:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:39,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105572596] [2023-02-15 22:33:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:33:39,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:39,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:39,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 22:33:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:33:40,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 22:33:40,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:40,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:33:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:33:40,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:40,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105572596] [2023-02-15 22:33:40,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105572596] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:33:40,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:33:40,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 22:33:40,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924124825] [2023-02-15 22:33:40,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:33:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 22:33:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 22:33:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-15 22:33:40,315 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:33:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:33:40,532 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2023-02-15 22:33:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 22:33:40,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-02-15 22:33:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:33:40,538 INFO L225 Difference]: With dead ends: 2084 [2023-02-15 22:33:40,538 INFO L226 Difference]: Without dead ends: 2082 [2023-02-15 22:33:40,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-02-15 22:33:40,541 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 8 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 22:33:40,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9352 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 22:33:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-02-15 22:33:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2023-02-15 22:33:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1026 states have (on average 2.1335282651072123) internal successors, (2189), 1997 states have internal predecessors, (2189), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 22:33:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2023-02-15 22:33:40,568 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2023-02-15 22:33:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:33:40,568 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2023-02-15 22:33:40,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:33:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2023-02-15 22:33:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 22:33:40,569 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:33:40,569 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:33:40,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-15 22:33:40,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:40,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:33:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:33:40,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2023-02-15 22:33:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:33:40,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223863442] [2023-02-15 22:33:40,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:33:40,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:33:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:33:40,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:33:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 22:33:42,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 22:33:42,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:33:42,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-15 22:33:42,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:33:42,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:33:42,635 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2023-02-15 22:33:42,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2023-02-15 22:33:43,799 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-15 22:33:43,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2023-02-15 22:33:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 22:33:43,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:33:43,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:33:43,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223863442] [2023-02-15 22:33:43,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223863442] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:33:43,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:33:43,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:33:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471555539] [2023-02-15 22:33:43,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:33:43,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:33:43,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:33:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:33:43,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:33:43,872 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:34:03,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:34:03,187 INFO L93 Difference]: Finished difference Result 2431 states and 2784 transitions. [2023-02-15 22:34:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:34:03,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 22:34:03,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:34:03,194 INFO L225 Difference]: With dead ends: 2431 [2023-02-15 22:34:03,194 INFO L226 Difference]: Without dead ends: 2431 [2023-02-15 22:34:03,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:34:03,195 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1839 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:34:03,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3392 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2023-02-15 22:34:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-02-15 22:34:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2273. [2023-02-15 22:34:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1191 states have (on average 2.1007556675062973) internal successors, (2502), 2166 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 30 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-15 22:34:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2705 transitions. [2023-02-15 22:34:03,228 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2705 transitions. Word has length 17 [2023-02-15 22:34:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:34:03,228 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 2705 transitions. [2023-02-15 22:34:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:34:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2705 transitions. [2023-02-15 22:34:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 22:34:03,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:34:03,229 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:03,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:03,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:34:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2023-02-15 22:34:03,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:03,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055979727] [2023-02-15 22:34:03,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:03,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:03,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:03,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:34:03,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 22:34:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:04,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 22:34:04,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:04,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:34:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:04,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:04,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055979727] [2023-02-15 22:34:04,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055979727] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:34:04,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:34:04,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-15 22:34:04,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958193375] [2023-02-15 22:34:04,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:34:04,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 22:34:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:04,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 22:34:04,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-15 22:34:04,801 INFO L87 Difference]: Start difference. First operand 2273 states and 2705 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:34:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:34:05,447 INFO L93 Difference]: Finished difference Result 2292 states and 2728 transitions. [2023-02-15 22:34:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 22:34:05,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-15 22:34:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:34:05,456 INFO L225 Difference]: With dead ends: 2292 [2023-02-15 22:34:05,456 INFO L226 Difference]: Without dead ends: 2282 [2023-02-15 22:34:05,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2023-02-15 22:34:05,457 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 16 mSDsluCounter, 11691 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14032 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:34:05,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14032 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 22:34:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-02-15 22:34:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2282. [2023-02-15 22:34:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 1200 states have (on average 2.0908333333333333) internal successors, (2509), 2175 states have internal predecessors, (2509), 112 states have call successors, (112), 31 states have call predecessors, (112), 30 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-15 22:34:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2712 transitions. [2023-02-15 22:34:05,539 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2712 transitions. Word has length 17 [2023-02-15 22:34:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:34:05,540 INFO L495 AbstractCegarLoop]: Abstraction has 2282 states and 2712 transitions. [2023-02-15 22:34:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:34:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2712 transitions. [2023-02-15 22:34:05,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 22:34:05,540 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:34:05,540 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:05,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:05,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:05,741 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:34:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:05,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2023-02-15 22:34:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:05,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391017422] [2023-02-15 22:34:05,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:34:05,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:05,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:34:05,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 22:34:08,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 22:34:08,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:34:08,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 22:34:08,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:08,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:08,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:08,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:08,603 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-02-15 22:34:08,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2023-02-15 22:34:08,686 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2023-02-15 22:34:08,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 160 [2023-02-15 22:34:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:34:09,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:34:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-15 22:34:09,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:09,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:09,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391017422] [2023-02-15 22:34:09,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391017422] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:09,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:09,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:34:09,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972932569] [2023-02-15 22:34:09,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:09,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:34:09,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:09,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:34:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:34:09,064 INFO L87 Difference]: Start difference. First operand 2282 states and 2712 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:34:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:34:26,330 INFO L93 Difference]: Finished difference Result 2314 states and 2756 transitions. [2023-02-15 22:34:26,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 22:34:26,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-02-15 22:34:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:34:26,337 INFO L225 Difference]: With dead ends: 2314 [2023-02-15 22:34:26,337 INFO L226 Difference]: Without dead ends: 2314 [2023-02-15 22:34:26,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:34:26,339 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 254 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-02-15 22:34:26,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 4950 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2023-02-15 22:34:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2023-02-15 22:34:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2288. [2023-02-15 22:34:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 1205 states have (on average 2.086307053941909) internal successors, (2514), 2179 states have internal predecessors, (2514), 112 states have call successors, (112), 33 states have call predecessors, (112), 32 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-15 22:34:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2717 transitions. [2023-02-15 22:34:26,366 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2717 transitions. Word has length 23 [2023-02-15 22:34:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:34:26,366 INFO L495 AbstractCegarLoop]: Abstraction has 2288 states and 2717 transitions. [2023-02-15 22:34:26,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:34:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2717 transitions. [2023-02-15 22:34:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 22:34:26,367 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:34:26,367 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:26,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:26,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:26,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:34:26,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2023-02-15 22:34:26,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:26,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409596613] [2023-02-15 22:34:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:26,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:26,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:26,601 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:34:26,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 22:34:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:27,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 22:34:27,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:27,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:34:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:28,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:28,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409596613] [2023-02-15 22:34:28,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409596613] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:34:28,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:34:28,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-15 22:34:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101322887] [2023-02-15 22:34:28,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:34:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 22:34:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 22:34:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-02-15 22:34:28,586 INFO L87 Difference]: Start difference. First operand 2288 states and 2717 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:34:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:34:30,770 INFO L93 Difference]: Finished difference Result 2322 states and 2761 transitions. [2023-02-15 22:34:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 22:34:30,793 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-15 22:34:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:34:30,799 INFO L225 Difference]: With dead ends: 2322 [2023-02-15 22:34:30,799 INFO L226 Difference]: Without dead ends: 2306 [2023-02-15 22:34:30,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 22:34:30,801 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 28 mSDsluCounter, 28071 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30414 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 22:34:30,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30414 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 22:34:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-02-15 22:34:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-02-15 22:34:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 1223 states have (on average 2.070318887980376) internal successors, (2532), 2197 states have internal predecessors, (2532), 112 states have call successors, (112), 33 states have call predecessors, (112), 32 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-15 22:34:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2735 transitions. [2023-02-15 22:34:30,827 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2735 transitions. Word has length 25 [2023-02-15 22:34:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:34:30,827 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 2735 transitions. [2023-02-15 22:34:30,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:34:30,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2735 transitions. [2023-02-15 22:34:30,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 22:34:30,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:34:30,828 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:30,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:31,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:31,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:34:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2023-02-15 22:34:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625123657] [2023-02-15 22:34:31,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:34:31,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:31,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:31,067 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:34:31,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 22:34:33,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 22:34:33,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:34:33,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 22:34:33,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:34,122 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-15 22:34:34,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2023-02-15 22:34:37,120 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2023-02-15 22:34:37,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68 [2023-02-15 22:34:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-02-15 22:34:37,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:34:37,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:37,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625123657] [2023-02-15 22:34:37,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625123657] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:34:37,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:34:37,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 22:34:37,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554410618] [2023-02-15 22:34:37,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:34:37,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 22:34:37,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 22:34:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:34:37,394 INFO L87 Difference]: Start difference. First operand 2306 states and 2735 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:34:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:34:44,973 INFO L93 Difference]: Finished difference Result 3255 states and 3741 transitions. [2023-02-15 22:34:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 22:34:44,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-02-15 22:34:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:34:44,981 INFO L225 Difference]: With dead ends: 3255 [2023-02-15 22:34:44,982 INFO L226 Difference]: Without dead ends: 3255 [2023-02-15 22:34:44,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 22:34:44,982 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 3517 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3517 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-02-15 22:34:44,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3517 Valid, 2621 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-02-15 22:34:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2023-02-15 22:34:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 2741. [2023-02-15 22:34:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1629 states have (on average 2.0828729281767955) internal successors, (3393), 2604 states have internal predecessors, (3393), 138 states have call successors, (138), 46 states have call predecessors, (138), 43 states have return successors, (117), 101 states have call predecessors, (117), 115 states have call successors, (117) [2023-02-15 22:34:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3648 transitions. [2023-02-15 22:34:45,017 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3648 transitions. Word has length 37 [2023-02-15 22:34:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:34:45,017 INFO L495 AbstractCegarLoop]: Abstraction has 2741 states and 3648 transitions. [2023-02-15 22:34:45,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:34:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3648 transitions. [2023-02-15 22:34:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 22:34:45,018 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:34:45,018 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:45,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:45,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:34:45,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2023-02-15 22:34:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:45,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891134212] [2023-02-15 22:34:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:34:45,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:45,261 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:34:45,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 22:34:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:34:46,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 22:34:46,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:34:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:47,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:34:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:34:49,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:34:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891134212] [2023-02-15 22:34:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891134212] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:34:49,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:34:49,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-15 22:34:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174849487] [2023-02-15 22:34:49,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:34:49,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-15 22:34:49,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:34:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-15 22:34:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-02-15 22:34:49,319 INFO L87 Difference]: Start difference. First operand 2741 states and 3648 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:34:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:34:59,522 INFO L93 Difference]: Finished difference Result 2841 states and 3770 transitions. [2023-02-15 22:34:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-02-15 22:34:59,523 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-02-15 22:34:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:34:59,529 INFO L225 Difference]: With dead ends: 2841 [2023-02-15 22:34:59,529 INFO L226 Difference]: Without dead ends: 2789 [2023-02-15 22:34:59,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2023-02-15 22:34:59,531 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 69 mSDsluCounter, 58541 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 60887 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-15 22:34:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 60887 Invalid, 1697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-15 22:34:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2023-02-15 22:34:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2023-02-15 22:34:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 1677 states have (on average 2.0518783542039354) internal successors, (3441), 2652 states have internal predecessors, (3441), 138 states have call successors, (138), 46 states have call predecessors, (138), 43 states have return successors, (117), 101 states have call predecessors, (117), 115 states have call successors, (117) [2023-02-15 22:34:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3696 transitions. [2023-02-15 22:34:59,575 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3696 transitions. Word has length 37 [2023-02-15 22:34:59,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:34:59,576 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 3696 transitions. [2023-02-15 22:34:59,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:34:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3696 transitions. [2023-02-15 22:34:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 22:34:59,581 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:34:59,581 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:34:59,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-15 22:34:59,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:59,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:34:59,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:34:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2023-02-15 22:34:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:34:59,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706977731] [2023-02-15 22:34:59,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:34:59,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:34:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:34:59,805 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:34:59,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-15 22:35:02,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 22:35:02,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:35:02,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 22:35:02,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:35:02,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:03,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:03,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:03,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:03,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2023-02-15 22:35:03,197 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-15 22:35:03,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2023-02-15 22:35:08,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:35:08,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 22:35:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-02-15 22:35:08,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:35:08,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:35:08,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706977731] [2023-02-15 22:35:08,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706977731] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:35:08,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:35:08,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 22:35:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045736401] [2023-02-15 22:35:08,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:35:08,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:35:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:35:08,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:35:08,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:35:08,389 INFO L87 Difference]: Start difference. First operand 2789 states and 3696 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:35:22,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:35:24,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:35:27,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:35:30,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:35:32,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 22:35:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:35:39,586 INFO L93 Difference]: Finished difference Result 4669 states and 5397 transitions. [2023-02-15 22:35:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 22:35:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-02-15 22:35:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:35:39,594 INFO L225 Difference]: With dead ends: 4669 [2023-02-15 22:35:39,594 INFO L226 Difference]: Without dead ends: 4669 [2023-02-15 22:35:39,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:35:39,595 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 8184 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 414 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8184 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2023-02-15 22:35:39,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8184 Valid, 2543 Invalid, 3524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 3109 Invalid, 1 Unknown, 0 Unchecked, 31.0s Time] [2023-02-15 22:35:39,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2023-02-15 22:35:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 3548. [2023-02-15 22:35:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2365 states have (on average 2.041014799154334) internal successors, (4827), 3343 states have internal predecessors, (4827), 192 states have call successors, (192), 70 states have call predecessors, (192), 69 states have return successors, (175), 152 states have call predecessors, (175), 169 states have call successors, (175) [2023-02-15 22:35:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 5194 transitions. [2023-02-15 22:35:39,667 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 5194 transitions. Word has length 61 [2023-02-15 22:35:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:35:39,669 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 5194 transitions. [2023-02-15 22:35:39,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:35:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 5194 transitions. [2023-02-15 22:35:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-15 22:35:39,669 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:35:39,669 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:35:39,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-02-15 22:35:39,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:35:39,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:35:39,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:35:39,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2023-02-15 22:35:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:35:39,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764511598] [2023-02-15 22:35:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 22:35:39,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:35:39,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:35:39,893 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:35:39,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 22:35:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 22:35:41,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 22:35:41,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:35:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:35:43,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 22:35:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 22:35:50,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:35:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764511598] [2023-02-15 22:35:50,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764511598] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 22:35:50,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 22:35:50,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2023-02-15 22:35:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601621805] [2023-02-15 22:35:50,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 22:35:50,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-15 22:35:50,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:35:50,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-15 22:35:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2023-02-15 22:35:50,755 INFO L87 Difference]: Start difference. First operand 3548 states and 5194 transitions. Second operand has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:36:48,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 22:36:48,749 INFO L93 Difference]: Finished difference Result 3816 states and 5508 transitions. [2023-02-15 22:36:48,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-02-15 22:36:48,750 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-02-15 22:36:48,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 22:36:48,756 INFO L225 Difference]: With dead ends: 3816 [2023-02-15 22:36:48,756 INFO L226 Difference]: Without dead ends: 3668 [2023-02-15 22:36:48,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=13940, Invalid=32070, Unknown=0, NotChecked=0, Total=46010 [2023-02-15 22:36:48,763 INFO L413 NwaCegarLoop]: 2354 mSDtfsCounter, 143 mSDsluCounter, 112804 mSDsCounter, 0 mSdLazyCounter, 6168 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 115158 SdHoareTripleChecker+Invalid, 6330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 6168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-02-15 22:36:48,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 115158 Invalid, 6330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 6168 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-02-15 22:36:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2023-02-15 22:36:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3668. [2023-02-15 22:36:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2485 states have (on average 1.9907444668008047) internal successors, (4947), 3463 states have internal predecessors, (4947), 192 states have call successors, (192), 70 states have call predecessors, (192), 69 states have return successors, (175), 152 states have call predecessors, (175), 169 states have call successors, (175) [2023-02-15 22:36:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5314 transitions. [2023-02-15 22:36:48,793 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5314 transitions. Word has length 63 [2023-02-15 22:36:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 22:36:48,793 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5314 transitions. [2023-02-15 22:36:48,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 22:36:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5314 transitions. [2023-02-15 22:36:48,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-02-15 22:36:48,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 22:36:48,794 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 22:36:48,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-15 22:36:49,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:36:49,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 22:36:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 22:36:49,018 INFO L85 PathProgramCache]: Analyzing trace with hash -387940330, now seen corresponding path program 2 times [2023-02-15 22:36:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 22:36:49,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518424399] [2023-02-15 22:36:49,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 22:36:49,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 22:36:49,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 22:36:49,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 22:36:49,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-15 22:36:50,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 22:36:50,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 22:36:50,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 22:36:50,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 22:36:50,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:36:50,685 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2023-02-15 22:36:50,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2023-02-15 22:36:53,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:36:53,720 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-02-15 22:36:53,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2023-02-15 22:36:53,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 22:36:54,025 INFO L321 Elim1Store]: treesize reduction 62, result has 19.5 percent of original size [2023-02-15 22:36:54,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2023-02-15 22:36:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-02-15 22:36:54,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 22:36:54,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 22:36:54,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518424399] [2023-02-15 22:36:54,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518424399] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 22:36:54,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 22:36:54,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 22:36:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799025096] [2023-02-15 22:36:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 22:36:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 22:36:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 22:36:54,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 22:36:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 22:36:54,129 INFO L87 Difference]: Start difference. First operand 3668 states and 5314 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 22:36:56,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]