./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 a31fd051 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-?-a31fd05 [2023-02-15 13:32:18,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:32:18,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:32:18,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:32:18,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:32:18,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:32:18,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:32:18,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:32:18,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:32:18,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:32:18,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:32:18,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:32:18,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:32:18,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:32:18,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:32:18,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:32:18,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:32:18,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:32:18,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:32:18,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:32:18,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:32:18,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:32:18,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:32:18,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:32:18,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:32:18,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:32:18,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:32:18,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:32:18,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:32:18,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:32:18,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:32:18,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:32:18,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:32:18,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:32:18,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:32:18,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:32:18,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:32:18,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:32:18,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:32:18,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:32:18,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:32:18,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 13:32:19,006 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:32:19,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:32:19,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:32:19,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:32:19,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:32:19,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:32:19,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:32:19,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:32:19,019 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:32:19,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:32:19,019 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:32:19,019 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:32:19,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:32:19,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:32:19,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:32:19,020 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:32:19,020 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:32:19,020 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:32:19,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:32:19,021 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:32:19,021 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:32:19,021 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:32:19,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:32:19,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:32:19,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:32:19,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:32:19,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:32:19,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:32:19,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:32:19,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:32:19,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:32:19,023 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:32:19,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:32:19,024 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:32:19,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-15 13:32:19,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:32:19,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:32:19,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:32:19,267 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:32:19,267 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:32:19,268 INFO L432 ainManager$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 13:32:20,383 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:32:20,818 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:32:20,819 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 13:32:20,867 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e04c354a/38f451aa85fc442f91cfff17fe26bb46/FLAG32eaab67c [2023-02-15 13:32:20,883 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e04c354a/38f451aa85fc442f91cfff17fe26bb46 [2023-02-15 13:32:20,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:32:20,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:32:20,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:32:20,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:32:20,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:32:20,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:32:20" (1/1) ... [2023-02-15 13:32:20,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed3520f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:20, skipping insertion in model container [2023-02-15 13:32:20,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:32:20" (1/1) ... [2023-02-15 13:32:20,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:32:20,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:32:21,672 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 13:32:21,705 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 13:32:21,715 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 13:32:21,732 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 13:32:22,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:32:22,100 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 13:32:22,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@767db8c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:22, skipping insertion in model container [2023-02-15 13:32:22,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:32:22,102 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 13:32:22,103 INFO L158 Benchmark]: Toolchain (without parser) took 1216.18ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 73.2MB in the beginning and 98.7MB in the end (delta: -25.5MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-02-15 13:32:22,104 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:32:22,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1213.15ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 73.2MB in the beginning and 99.6MB in the end (delta: -26.4MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2023-02-15 13:32:22,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1213.15ms. Allocated memory was 127.9MB in the beginning and 188.7MB in the end (delta: 60.8MB). Free memory was 73.2MB in the beginning and 99.6MB in the end (delta: -26.4MB). Peak memory consumption was 42.6MB. 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-?-a31fd05 [2023-02-15 13:32:23,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:32:23,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:32:23,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:32:23,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:32:23,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:32:23,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:32:23,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:32:23,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:32:23,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:32:23,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:32:24,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:32:24,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:32:24,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:32:24,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:32:24,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:32:24,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:32:24,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:32:24,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:32:24,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:32:24,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:32:24,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:32:24,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:32:24,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:32:24,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:32:24,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:32:24,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:32:24,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:32:24,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:32:24,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:32:24,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:32:24,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:32:24,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:32:24,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:32:24,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:32:24,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:32:24,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:32:24,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:32:24,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:32:24,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:32:24,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:32:24,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 13:32:24,065 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:32:24,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:32:24,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:32:24,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:32:24,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:32:24,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:32:24,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:32:24,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:32:24,068 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:32:24,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:32:24,069 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 13:32:24,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:32:24,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:32:24,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 13:32:24,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:32:24,070 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 13:32:24,070 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 13:32:24,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 13:32:24,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:32:24,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 13:32:24,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 13:32:24,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 13:32:24,072 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 13:32:24,072 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:32:24,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:32:24,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:32:24,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:32:24,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:32:24,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:32:24,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:32:24,085 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 13:32:24,085 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 13:32:24,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:32:24,085 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:32:24,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:32:24,086 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 13:32:24,086 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:32:24,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-15 13:32:24,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:32:24,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:32:24,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:32:24,406 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:32:24,406 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:32:24,407 INFO L432 ainManager$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 13:32:25,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:32:26,098 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:32:26,099 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 13:32:26,137 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8432f50/5368668f8abe43d8b6a810ef04779403/FLAG3ced9f073 [2023-02-15 13:32:26,152 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8432f50/5368668f8abe43d8b6a810ef04779403 [2023-02-15 13:32:26,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:32:26,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:32:26,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:32:26,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:32:26,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:32:26,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:32:26" (1/1) ... [2023-02-15 13:32:26,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6292d29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:26, skipping insertion in model container [2023-02-15 13:32:26,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:32:26" (1/1) ... [2023-02-15 13:32:26,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:32:26,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:32:26,899 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 13:32:26,932 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 13:32:26,937 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 13:32:27,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:32:27,376 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 13:32:27,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:32:27,459 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 13:32:27,478 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 13:32:27,480 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 13:32:27,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:32:27,747 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:32:27,811 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 13:32:27,822 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 13:32:27,824 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 13:32:28,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:32:28,093 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:32:28,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28 WrapperNode [2023-02-15 13:32:28,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:32:28,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:32:28,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:32:28,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:32:28,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,310 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2023-02-15 13:32:28,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:32:28,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:32:28,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:32:28,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:32:28,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:32:28,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:32:28,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:32:28,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:32:28,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (1/1) ... [2023-02-15 13:32:28,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:32:28,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:32:28,650 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 13:32:28,672 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 13:32:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-15 13:32:28,689 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-15 13:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-15 13:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 13:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-15 13:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-15 13:32:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-15 13:32:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-15 13:32:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-15 13:32:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-15 13:32:28,691 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-15 13:32:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-15 13:32:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-15 13:32:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-15 13:32:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-15 13:32:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-15 13:32:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-15 13:32:28,693 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-15 13:32:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-02-15 13:32:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-15 13:32:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-15 13:32:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-15 13:32:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-02-15 13:32:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-15 13:32:28,694 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-15 13:32:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-15 13:32:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-15 13:32:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-15 13:32:28,695 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-15 13:32:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-15 13:32:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-15 13:32:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 13:32:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 13:32:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-15 13:32:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-15 13:32:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-15 13:32:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-15 13:32:28,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-15 13:32:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-15 13:32:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-15 13:32:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-15 13:32:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-15 13:32:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-15 13:32:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-15 13:32:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-15 13:32:28,727 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-15 13:32:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-15 13:32:28,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-15 13:32:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:32:28,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:32:29,309 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:32:29,312 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:32:29,364 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:29,380 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 13:32:29,380 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 13:32:29,387 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:29,830 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 13:32:29,830 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 13:32:29,876 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:29,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-15 13:32:29,891 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-15 13:32:29,896 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,041 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,063 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-15 13:32:32,117 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-15 13:32:32,119 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,120 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,120 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,458 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-15 13:32:32,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 13:32:32,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 13:32:32,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-15 13:32:32,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-15 13:32:32,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-15 13:32:32,464 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,476 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:32,478 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,608 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-15 13:32:36,609 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-15 13:32:36,609 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-15 13:32:36,609 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-15 13:32:36,609 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-15 13:32:36,609 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-15 13:32:36,757 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,868 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 13:32:36,869 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 13:32:36,880 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,882 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,885 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,888 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,889 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,894 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,896 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:36,897 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 13:32:40,458 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-15 13:32:40,458 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-15 13:32:40,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-15 13:32:40,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-15 13:32:40,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-15 13:32:40,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-15 13:32:40,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-15 13:32:40,459 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-15 13:32:40,462 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-15 13:32:40,463 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-15 13:32:40,525 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:32:40,546 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:32:40,546 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 13:32:40,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:32:40 BoogieIcfgContainer [2023-02-15 13:32:40,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:32:40,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:32:40,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:32:40,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:32:40,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:32:26" (1/3) ... [2023-02-15 13:32:40,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd2ec36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:32:40, skipping insertion in model container [2023-02-15 13:32:40,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:32:28" (2/3) ... [2023-02-15 13:32:40,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd2ec36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:32:40, skipping insertion in model container [2023-02-15 13:32:40,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:32:40" (3/3) ... [2023-02-15 13:32:40,560 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2023-02-15 13:32:40,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:32:40,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2023-02-15 13:32:40,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:32:40,638 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;@74945ad5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:32:40,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2023-02-15 13:32:40,646 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 13:32:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 13:32:40,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:32:40,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 13:32:40,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:32:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:32:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2023-02-15 13:32:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:32:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587560074] [2023-02-15 13:32:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:32:40,671 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 13:32:40,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:32:40,677 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 13:32:40,713 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 13:32:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:32:42,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 13:32:42,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:32:42,603 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2023-02-15 13:32:42,604 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 36 [2023-02-15 13:32:42,669 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 13:32:42,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:32:42,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:32:42,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587560074] [2023-02-15 13:32:42,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587560074] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:32:42,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:32:42,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:32:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659938131] [2023-02-15 13:32:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:32:42,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:32:42,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:32:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:32:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:32:42,711 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 13:32:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:32:45,971 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2023-02-15 13:32:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:32:45,973 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 13:32:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:32:45,991 INFO L225 Difference]: With dead ends: 2077 [2023-02-15 13:32:45,991 INFO L226 Difference]: Without dead ends: 2075 [2023-02-15 13:32:45,992 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 13:32:45,995 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:32:45,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-02-15 13:32:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-02-15 13:32:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-02-15 13:32:46,091 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 13:32:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2023-02-15 13:32:46,108 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2023-02-15 13:32:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:32:46,108 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2023-02-15 13:32:46,109 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 13:32:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2023-02-15 13:32:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 13:32:46,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:32:46,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 13:32:46,130 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 13:32:46,317 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 13:32:46,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:32:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:32:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2023-02-15 13:32:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:32:46,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788740614] [2023-02-15 13:32:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:32:46,321 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 13:32:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:32:46,324 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 13:32:46,325 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 13:32:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:32:48,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 13:32:48,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:32:48,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:32:48,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:32:48,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:32:48,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:32:48,316 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-02-15 13:32:48,316 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 13:32:48,330 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 13:32:48,354 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 13:32:48,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:32:48,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:32:48,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788740614] [2023-02-15 13:32:48,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788740614] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:32:48,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:32:48,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:32:48,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809340966] [2023-02-15 13:32:48,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:32:48,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:32:48,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:32:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:32:48,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:32:48,358 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 13:32:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:32:52,107 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2023-02-15 13:32:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:32:52,108 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 13:32:52,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:32:52,116 INFO L225 Difference]: With dead ends: 2073 [2023-02-15 13:32:52,116 INFO L226 Difference]: Without dead ends: 2073 [2023-02-15 13:32:52,116 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 13:32:52,117 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.7s IncrementalHoareTripleChecker+Time [2023-02-15 13:32:52,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-02-15 13:32:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-02-15 13:32:52,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-02-15 13:32:52,154 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 13:32:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2023-02-15 13:32:52,162 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2023-02-15 13:32:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:32:52,163 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2023-02-15 13:32:52,163 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 13:32:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2023-02-15 13:32:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:32:52,163 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:32:52,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:32:52,185 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 13:32:52,381 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 13:32:52,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:32:52,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:32:52,382 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2023-02-15 13:32:52,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:32:52,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948426956] [2023-02-15 13:32:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:32:52,384 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 13:32:52,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:32:52,385 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 13:32:52,389 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 13:32:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:32:53,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:32:53,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:32:53,324 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-02-15 13:32:53,325 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 13:32:53,356 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 13:32:53,388 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 13:32:53,402 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 13:32:53,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:32:53,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:32:53,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948426956] [2023-02-15 13:32:53,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948426956] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:32:53,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:32:53,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:32:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590715593] [2023-02-15 13:32:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:32:53,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:32:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:32:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:32:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:32:53,404 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 13:32:58,070 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 13:33:03,448 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 13:33:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:33:03,506 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2023-02-15 13:33:03,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:33:03,506 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 13:33:03,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:33:03,514 INFO L225 Difference]: With dead ends: 2072 [2023-02-15 13:33:03,514 INFO L226 Difference]: Without dead ends: 2072 [2023-02-15 13:33:03,514 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 13:33:03,515 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-02-15 13:33:03,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2023-02-15 13:33:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-15 13:33:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-15 13:33:03,547 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 13:33:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-15 13:33:03,554 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2023-02-15 13:33:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:33:03,554 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-15 13:33:03,555 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 13:33:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-15 13:33:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:33:03,555 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:33:03,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:33:03,585 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 13:33:03,778 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 13:33:03,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:33:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:33:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2023-02-15 13:33:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:33:03,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934896341] [2023-02-15 13:33:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:33:03,781 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 13:33:03,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:33:03,785 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 13:33:03,788 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 13:33:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:33:04,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 13:33:04,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:33:04,857 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2023-02-15 13:33:04,857 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 13:33:04,901 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 13:33:04,912 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 13:33:04,952 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 13:33:04,960 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 13:33:04,979 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 13:33:04,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:33:04,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:33:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934896341] [2023-02-15 13:33:04,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934896341] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:33:04,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:33:04,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:33:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807205426] [2023-02-15 13:33:04,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:33:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:33:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:33:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:33:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:33:04,981 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 13:33:09,707 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 13:33:16,044 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 13:33:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:33:16,116 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2023-02-15 13:33:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:33:16,117 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 13:33:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:33:16,124 INFO L225 Difference]: With dead ends: 2071 [2023-02-15 13:33:16,124 INFO L226 Difference]: Without dead ends: 2071 [2023-02-15 13:33:16,124 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 13:33:16,125 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s 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, 11.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:33:16,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2023-02-15 13:33:16,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-02-15 13:33:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2023-02-15 13:33:16,157 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 13:33:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2023-02-15 13:33:16,164 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2023-02-15 13:33:16,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:33:16,164 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2023-02-15 13:33:16,164 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 13:33:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2023-02-15 13:33:16,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 13:33:16,165 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:33:16,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:33:16,193 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 (5)] Ended with exit code 0 [2023-02-15 13:33:16,379 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 13:33:16,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:33:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:33:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2023-02-15 13:33:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:33:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828976820] [2023-02-15 13:33:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:33:16,381 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 13:33:16,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:33:16,382 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 13:33:16,383 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 13:33:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:33:17,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 13:33:17,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:33:17,273 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 13:33:17,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:33:17,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:33:17,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828976820] [2023-02-15 13:33:17,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828976820] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:33:17,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:33:17,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:33:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485533137] [2023-02-15 13:33:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:33:17,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:33:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:33:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:33:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:33:17,274 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 13:33:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:33:17,359 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2023-02-15 13:33:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:33:17,360 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 13:33:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:33:17,367 INFO L225 Difference]: With dead ends: 2074 [2023-02-15 13:33:17,367 INFO L226 Difference]: Without dead ends: 2072 [2023-02-15 13:33:17,367 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 13:33:17,368 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 13:33:17,368 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 13:33:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-15 13:33:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-15 13:33:17,407 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 13:33:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-15 13:33:17,416 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2023-02-15 13:33:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:33:17,416 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-15 13:33:17,416 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 13:33:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-15 13:33:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 13:33:17,417 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:33:17,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:33:17,444 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 13:33:17,631 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 13:33:17,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:33:17,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:33:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2023-02-15 13:33:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:33:17,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851983127] [2023-02-15 13:33:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:33:17,634 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 13:33:17,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:33:17,636 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 13:33:17,638 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 13:33:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:33:18,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:33:18,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:33:18,534 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 13:33:18,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:33:18,624 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 13:33:18,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:33:18,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851983127] [2023-02-15 13:33:18,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851983127] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:33:18,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:33:18,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 13:33:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504013731] [2023-02-15 13:33:18,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:33:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 13:33:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:33:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 13:33:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:33:18,626 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 13:33:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:33:18,912 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2023-02-15 13:33:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 13:33:18,913 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 13:33:18,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:33:18,920 INFO L225 Difference]: With dead ends: 2084 [2023-02-15 13:33:18,920 INFO L226 Difference]: Without dead ends: 2082 [2023-02-15 13:33:18,921 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 13:33:18,921 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 13:33:18,922 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 13:33:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-02-15 13:33:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2023-02-15 13:33:18,954 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 13:33:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2023-02-15 13:33:18,965 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2023-02-15 13:33:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:33:18,965 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2023-02-15 13:33:18,966 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 13:33:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2023-02-15 13:33:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 13:33:18,967 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:33:18,967 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:33:18,994 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 (7)] Forceful destruction successful, exit code 0 [2023-02-15 13:33:19,185 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 13:33:19,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:33:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:33:19,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2023-02-15 13:33:19,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:33:19,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191732916] [2023-02-15 13:33:19,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:33:19,188 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 13:33:19,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:33:19,189 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 13:33:19,190 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 13:33:21,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 13:33:21,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:33:21,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 13:33:21,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:33:22,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:22,233 INFO L217 Elim1Store]: Index analysis took 141 ms [2023-02-15 13:33:24,136 INFO L321 Elim1Store]: treesize reduction 1683, result has 16.4 percent of original size [2023-02-15 13:33:24,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 75 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 80 case distinctions, treesize of input 152 treesize of output 443 [2023-02-15 13:33:25,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 25 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 13:33:27,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 66 [2023-02-15 13:33:37,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:33:37,280 INFO L217 Elim1Store]: Index analysis took 105 ms [2023-02-15 13:33:37,656 INFO L321 Elim1Store]: treesize reduction 286, result has 33.5 percent of original size [2023-02-15 13:33:37,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 142 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 131 treesize of output 267 [2023-02-15 13:33:39,030 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 13:33:39,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:33:39,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:33:39,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191732916] [2023-02-15 13:33:39,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191732916] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:33:39,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:33:39,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 13:33:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561404622] [2023-02-15 13:33:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:33:39,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 13:33:39,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:33:39,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 13:33:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-15 13:33:39,032 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13:33:47,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 13:33:53,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 13:34:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:34:55,597 INFO L93 Difference]: Finished difference Result 3138 states and 3580 transitions. [2023-02-15 13:34:55,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 13:34:55,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13:34:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:34:55,607 INFO L225 Difference]: With dead ends: 3138 [2023-02-15 13:34:55,607 INFO L226 Difference]: Without dead ends: 3138 [2023-02-15 13:34:55,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=47, Invalid=83, Unknown=2, NotChecked=0, Total=132 [2023-02-15 13:34:55,608 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1897 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.9s IncrementalHoareTripleChecker+Time [2023-02-15 13:34:55,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 7826 Invalid, 5932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 5915 Invalid, 1 Unknown, 0 Unchecked, 66.9s Time] [2023-02-15 13:34:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2023-02-15 13:34:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2621. [2023-02-15 13:34:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 1521 states have (on average 2.1341222879684416) internal successors, (3246), 2498 states have internal predecessors, (3246), 131 states have call successors, (131), 37 states have call predecessors, (131), 34 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 13:34:55,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3487 transitions. [2023-02-15 13:34:55,655 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3487 transitions. Word has length 17 [2023-02-15 13:34:55,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:34:55,655 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 3487 transitions. [2023-02-15 13:34:55,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13:34:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3487 transitions. [2023-02-15 13:34:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 13:34:55,656 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:34:55,656 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:34:55,685 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 (8)] Ended with exit code 0 [2023-02-15 13:34:55,877 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 13:34:55,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:34:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:55,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2023-02-15 13:34:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:55,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678707851] [2023-02-15 13:34:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:34:55,879 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 13:34:55,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:55,880 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 13:34:55,882 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 13:34:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:34:56,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:34:56,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:34:56,860 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 13:34:56,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:34:57,071 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 13:34:57,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:34:57,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678707851] [2023-02-15 13:34:57,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678707851] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:34:57,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:34:57,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-15 13:34:57,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014270211] [2023-02-15 13:34:57,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:34:57,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 13:34:57,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:34:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 13:34:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:34:57,074 INFO L87 Difference]: Start difference. First operand 2621 states and 3487 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 13:34:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:34:57,679 INFO L93 Difference]: Finished difference Result 2649 states and 3519 transitions. [2023-02-15 13:34:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 13:34:57,680 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 13:34:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:34:57,688 INFO L225 Difference]: With dead ends: 2649 [2023-02-15 13:34:57,689 INFO L226 Difference]: Without dead ends: 2633 [2023-02-15 13:34:57,689 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 13:34:57,690 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 15 mSDsluCounter, 14024 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16365 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 13:34:57,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16365 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 13:34:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2023-02-15 13:34:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2023-02-15 13:34:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 1533 states have (on average 2.1239399869536855) internal successors, (3256), 2510 states have internal predecessors, (3256), 131 states have call successors, (131), 37 states have call predecessors, (131), 34 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 13:34:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3497 transitions. [2023-02-15 13:34:57,741 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3497 transitions. Word has length 17 [2023-02-15 13:34:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:34:57,741 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3497 transitions. [2023-02-15 13:34:57,741 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 13:34:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3497 transitions. [2023-02-15 13:34:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 13:34:57,742 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:34:57,742 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:34:57,773 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 (9)] Ended with exit code 0 [2023-02-15 13:34:57,958 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 13:34:57,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:34:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:34:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2023-02-15 13:34:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:34:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529150520] [2023-02-15 13:34:57,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:34:57,961 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 13:34:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:34:57,962 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 13:34:57,963 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 13:35:01,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 13:35:01,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:35:01,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 13:35:01,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:35:01,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,563 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-02-15 13:35:01,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2023-02-15 13:35:01,605 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-02-15 13:35:01,606 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 40 treesize of output 34 [2023-02-15 13:35:01,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:35:01,951 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 13:35:02,014 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 13:35:02,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:35:02,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:35:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529150520] [2023-02-15 13:35:02,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529150520] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:35:02,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:35:02,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:35:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442035093] [2023-02-15 13:35:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:35:02,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:35:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:35:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:35:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:35:02,016 INFO L87 Difference]: Start difference. First operand 2633 states and 3497 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 13:35:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:35:18,752 INFO L93 Difference]: Finished difference Result 2665 states and 3541 transitions. [2023-02-15 13:35:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:35:18,753 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 13:35:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:35:18,760 INFO L225 Difference]: With dead ends: 2665 [2023-02-15 13:35:18,760 INFO L226 Difference]: Without dead ends: 2665 [2023-02-15 13:35:18,760 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 13:35:18,760 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 206 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 5032 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-02-15 13:35:18,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 5032 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2023-02-15 13:35:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2023-02-15 13:35:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2639. [2023-02-15 13:35:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1538 states have (on average 2.1202860858257475) internal successors, (3261), 2514 states have internal predecessors, (3261), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 13:35:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3502 transitions. [2023-02-15 13:35:18,810 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3502 transitions. Word has length 23 [2023-02-15 13:35:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:35:18,811 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 3502 transitions. [2023-02-15 13:35:18,811 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 13:35:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3502 transitions. [2023-02-15 13:35:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 13:35:18,812 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:35:18,812 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:35:18,843 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 13:35:19,029 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 13:35:19,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:35:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:35:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2023-02-15 13:35:19,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:35:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817072187] [2023-02-15 13:35:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:35:19,031 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 13:35:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:35:19,032 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 13:35:19,033 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 13:35:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:35:20,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 13:35:20,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:35:20,190 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 13:35:20,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:35:20,787 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 13:35:20,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:35:20,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817072187] [2023-02-15 13:35:20,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817072187] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:35:20,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:35:20,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-15 13:35:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258885247] [2023-02-15 13:35:20,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:35:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 13:35:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:35:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 13:35:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-02-15 13:35:20,790 INFO L87 Difference]: Start difference. First operand 2639 states and 3502 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 13:35:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:35:23,203 INFO L93 Difference]: Finished difference Result 2691 states and 3564 transitions. [2023-02-15 13:35:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 13:35:23,204 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 13:35:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:35:23,221 INFO L225 Difference]: With dead ends: 2691 [2023-02-15 13:35:23,221 INFO L226 Difference]: Without dead ends: 2663 [2023-02-15 13:35:23,222 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 13:35:23,223 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 26 mSDsluCounter, 32736 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35079 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 13:35:23,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35079 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 13:35:23,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-02-15 13:35:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2023-02-15 13:35:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1562 states have (on average 2.1030729833546733) internal successors, (3285), 2538 states have internal predecessors, (3285), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 13:35:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3526 transitions. [2023-02-15 13:35:23,279 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3526 transitions. Word has length 25 [2023-02-15 13:35:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:35:23,279 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3526 transitions. [2023-02-15 13:35:23,280 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 13:35:23,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3526 transitions. [2023-02-15 13:35:23,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 13:35:23,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:35:23,281 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:35:23,310 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 13:35:23,509 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 13:35:23,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:35:23,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:35:23,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2023-02-15 13:35:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:35:23,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164505290] [2023-02-15 13:35:23,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:35:23,512 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 13:35:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:35:23,513 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 13:35:23,514 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 13:35:26,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 13:35:26,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:35:26,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 13:35:26,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:35:26,682 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-15 13:35:26,682 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 13:35:29,020 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2023-02-15 13:35:29,021 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 13:35:29,274 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 13:35:29,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:35:29,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:35:29,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164505290] [2023-02-15 13:35:29,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164505290] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:35:29,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:35:29,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:35:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571226648] [2023-02-15 13:35:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:35:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:35:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:35:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:35:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:35:29,276 INFO L87 Difference]: Start difference. First operand 2663 states and 3526 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 13:35:42,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:35:42,593 INFO L93 Difference]: Finished difference Result 3174 states and 3613 transitions. [2023-02-15 13:35:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:35:42,593 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 13:35:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:35:42,600 INFO L225 Difference]: With dead ends: 3174 [2023-02-15 13:35:42,600 INFO L226 Difference]: Without dead ends: 3174 [2023-02-15 13:35:42,601 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 13:35:42,601 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1831 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:35:42,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3600 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-02-15 13:35:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2023-02-15 13:35:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2660. [2023-02-15 13:35:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 1562 states have (on average 2.0992317541613317) internal successors, (3279), 2535 states have internal predecessors, (3279), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 13:35:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3520 transitions. [2023-02-15 13:35:42,643 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3520 transitions. Word has length 37 [2023-02-15 13:35:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:35:42,644 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 3520 transitions. [2023-02-15 13:35:42,644 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 13:35:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3520 transitions. [2023-02-15 13:35:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 13:35:42,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:35:42,645 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:35:42,676 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 13:35:42,875 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 13:35:42,875 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:35:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:35:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2023-02-15 13:35:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:35:42,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766622261] [2023-02-15 13:35:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:35:42,877 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 13:35:42,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:35:42,878 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 13:35:42,879 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 13:35:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:35:43,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 13:35:43,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:35:44,440 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 13:35:44,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:35:46,542 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 13:35:46,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:35:46,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766622261] [2023-02-15 13:35:46,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766622261] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:35:46,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 13:35:46,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-15 13:35:46,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178208833] [2023-02-15 13:35:46,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 13:35:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-15 13:35:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:35:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-15 13:35:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-02-15 13:35:46,547 INFO L87 Difference]: Start difference. First operand 2660 states and 3520 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 13:35:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:35:57,602 INFO L93 Difference]: Finished difference Result 2760 states and 3642 transitions. [2023-02-15 13:35:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-02-15 13:35:57,603 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 13:35:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:35:57,610 INFO L225 Difference]: With dead ends: 2760 [2023-02-15 13:35:57,610 INFO L226 Difference]: Without dead ends: 2708 [2023-02-15 13:35:57,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2023-02-15 13:35:57,614 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 70 mSDsluCounter, 53882 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 56228 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:35:57,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 56228 Invalid, 1718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-15 13:35:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2023-02-15 13:35:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2023-02-15 13:35:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 1610 states have (on average 2.0664596273291926) internal successors, (3327), 2583 states have internal predecessors, (3327), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 13:35:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3568 transitions. [2023-02-15 13:35:57,684 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3568 transitions. Word has length 37 [2023-02-15 13:35:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:35:57,685 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3568 transitions. [2023-02-15 13:35:57,685 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 13:35:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3568 transitions. [2023-02-15 13:35:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 13:35:57,686 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:35:57,686 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:35:57,720 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 13:35:57,905 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 13:35:57,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 13:35:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:35:57,906 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2023-02-15 13:35:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 13:35:57,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959234942] [2023-02-15 13:35:57,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:35:57,907 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 13:35:57,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 13:35:57,909 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 13:35:57,910 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 13:36:02,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 13:36:02,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:36:02,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 13:36:02,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:36:02,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:02,332 INFO L217 Elim1Store]: Index analysis took 110 ms [2023-02-15 13:36:02,333 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 13:36:02,617 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-15 13:36:02,617 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 13:36:08,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 13:36:08,016 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 13:36:08,050 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 13:36:08,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:36:08,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 13:36:08,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959234942] [2023-02-15 13:36:08,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959234942] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:36:08,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:36:08,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:36:08,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687212488] [2023-02-15 13:36:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:36:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:36:08,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 13:36:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:36:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:36:08,052 INFO L87 Difference]: Start difference. First operand 2708 states and 3568 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 13:36:24,611 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 13:36:27,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]