./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 26d01a9c 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-?-26d01a9 [2023-02-18 07:05:18,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:05:18,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:05:18,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:05:18,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:05:18,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:05:18,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:05:18,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:05:18,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:05:18,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:05:18,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:05:18,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:05:18,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:05:18,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:05:18,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:05:18,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:05:18,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:05:18,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:05:18,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:05:18,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:05:18,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:05:18,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:05:18,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:05:18,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:05:18,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:05:18,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:05:18,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:05:18,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:05:18,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:05:18,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:05:18,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:05:18,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:05:18,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:05:18,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:05:18,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:05:18,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:05:18,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:05:18,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:05:18,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:05:18,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:05:18,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:05:18,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 07:05:18,934 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:05:18,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:05:18,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:05:18,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:05:18,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:05:18,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:05:18,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:05:18,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:05:18,936 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:05:18,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:05:18,937 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 07:05:18,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:05:18,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:05:18,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:05:18,939 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 07:05:18,939 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:05:18,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:05:18,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:05:18,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:05:18,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:05:18,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:05:18,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:05:18,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:05:18,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:05:18,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:05:18,940 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:05:18,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:05:18,941 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:05:18,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-18 07:05:19,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:05:19,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:05:19,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:05:19,159 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:05:19,159 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:05:19,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-18 07:05:20,210 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:05:20,575 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:05:20,577 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-18 07:05:20,605 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c322b88e2/c1342168d4ba4cf6aba50a0a7142e931/FLAG9fbebdbc0 [2023-02-18 07:05:20,614 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c322b88e2/c1342168d4ba4cf6aba50a0a7142e931 [2023-02-18 07:05:20,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:05:20,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:05:20,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:05:20,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:05:20,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:05:20,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:05:20" (1/1) ... [2023-02-18 07:05:20,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb49afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:20, skipping insertion in model container [2023-02-18 07:05:20,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:05:20" (1/1) ... [2023-02-18 07:05:20,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:05:20,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:05:21,045 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] [2023-02-18 07:05:21,060 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-18 07:05:21,063 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-18 07:05:21,069 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-02-18 07:05:21,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:05:21,350 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) [2023-02-18 07:05:21,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fc0c8bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:21, skipping insertion in model container [2023-02-18 07:05:21,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:05:21,351 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-18 07:05:21,353 INFO L158 Benchmark]: Toolchain (without parser) took 734.87ms. Allocated memory is still 186.6MB. Free memory was 141.8MB in the beginning and 107.6MB in the end (delta: 34.2MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2023-02-18 07:05:21,353 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:05:21,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.46ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 107.6MB in the end (delta: 33.8MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2023-02-18 07:05:21,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 123.7MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.46ms. Allocated memory is still 186.6MB. Free memory was 141.4MB in the beginning and 107.6MB in the end (delta: 33.8MB). Peak memory consumption was 52.3MB. 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-?-26d01a9 [2023-02-18 07:05:23,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:05:23,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:05:23,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:05:23,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:05:23,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:05:23,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:05:23,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:05:23,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:05:23,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:05:23,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:05:23,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:05:23,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:05:23,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:05:23,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:05:23,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:05:23,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:05:23,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:05:23,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:05:23,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:05:23,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:05:23,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:05:23,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:05:23,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:05:23,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:05:23,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:05:23,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:05:23,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:05:23,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:05:23,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:05:23,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:05:23,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:05:23,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:05:23,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:05:23,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:05:23,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:05:23,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:05:23,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:05:23,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:05:23,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:05:23,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:05:23,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-18 07:05:23,323 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:05:23,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:05:23,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:05:23,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:05:23,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:05:23,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:05:23,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:05:23,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:05:23,326 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:05:23,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:05:23,327 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 07:05:23,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:05:23,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:05:23,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 07:05:23,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-18 07:05:23,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-18 07:05:23,329 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 07:05:23,329 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:05:23,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:05:23,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:05:23,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:05:23,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:05:23,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:05:23,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:05:23,330 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-18 07:05:23,330 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-18 07:05:23,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:05:23,331 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:05:23,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:05:23,331 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-18 07:05:23,331 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:05:23,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-18 07:05:23,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:05:23,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:05:23,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:05:23,560 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:05:23,560 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:05:23,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-18 07:05:24,527 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:05:24,914 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:05:24,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-18 07:05:24,943 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a08e880/f30aaa9626584943a8e1835bcbf8e4ae/FLAG42f5096f6 [2023-02-18 07:05:24,964 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a08e880/f30aaa9626584943a8e1835bcbf8e4ae [2023-02-18 07:05:24,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:05:24,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:05:24,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:05:24,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:05:24,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:05:24,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:05:24" (1/1) ... [2023-02-18 07:05:24,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db99869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:24, skipping insertion in model container [2023-02-18 07:05:24,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:05:24" (1/1) ... [2023-02-18 07:05:24,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:05:25,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:05:25,501 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] [2023-02-18 07:05:25,525 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-18 07:05:25,534 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-18 07:05:25,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:05:25,889 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-18 07:05:25,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:05:25,961 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] [2023-02-18 07:05:25,964 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-18 07:05:25,965 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-18 07:05:26,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:05:26,152 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:05:26,192 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] [2023-02-18 07:05:26,222 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-18 07:05:26,249 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-18 07:05:26,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:05:26,421 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:05:26,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26 WrapperNode [2023-02-18 07:05:26,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:05:26,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:05:26,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:05:26,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:05:26,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,572 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2023-02-18 07:05:26,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:05:26,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:05:26,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:05:26,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:05:26,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:05:26,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:05:26,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:05:26,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:05:26,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (1/1) ... [2023-02-18 07:05:26,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:05:26,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:05:26,816 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) [2023-02-18 07:05:26,836 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 [2023-02-18 07:05:26,860 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-18 07:05:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-18 07:05:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-18 07:05:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-18 07:05:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-18 07:05:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-18 07:05:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-18 07:05:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-18 07:05:26,863 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-18 07:05:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-18 07:05:26,863 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-18 07:05:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-18 07:05:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-18 07:05:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-18 07:05:26,864 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-18 07:05:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-18 07:05:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-18 07:05:26,865 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-18 07:05:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-02-18 07:05:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-18 07:05:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-18 07:05:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-18 07:05:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-02-18 07:05:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-18 07:05:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-18 07:05:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-18 07:05:26,866 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-18 07:05:26,866 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-18 07:05:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-18 07:05:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-18 07:05:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-18 07:05:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 07:05:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 07:05:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-18 07:05:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-18 07:05:26,867 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-18 07:05:26,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-18 07:05:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 07:05:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 07:05:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-18 07:05:26,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-18 07:05:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-18 07:05:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-18 07:05:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-18 07:05:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-18 07:05:26,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-18 07:05:26,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-18 07:05:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-18 07:05:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-18 07:05:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-18 07:05:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-18 07:05:26,871 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-18 07:05:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-18 07:05:26,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:05:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:05:27,239 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:05:27,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:05:27,293 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:27,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-18 07:05:27,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-18 07:05:27,305 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:27,571 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-18 07:05:27,571 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-18 07:05:27,603 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:27,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-18 07:05:27,614 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-18 07:05:27,618 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:29,749 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:29,762 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:29,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-18 07:05:29,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-18 07:05:29,845 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:29,845 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:29,846 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:30,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-18 07:05:30,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-18 07:05:30,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-18 07:05:30,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-18 07:05:30,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-18 07:05:30,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-18 07:05:30,066 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:30,085 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:30,087 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-18 07:05:33,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-18 07:05:33,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-18 07:05:33,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-18 07:05:33,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-18 07:05:33,301 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-18 07:05:33,368 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,419 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-18 07:05:33,420 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-18 07:05:33,426 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,426 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,428 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,430 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,431 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,438 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,439 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:33,444 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-18 07:05:35,707 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-18 07:05:35,707 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-18 07:05:35,708 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-18 07:05:35,721 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:05:35,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:05:35,731 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 07:05:35,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:05:35 BoogieIcfgContainer [2023-02-18 07:05:35,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:05:35,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:05:35,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:05:35,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:05:35,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:05:24" (1/3) ... [2023-02-18 07:05:35,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48036a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:05:35, skipping insertion in model container [2023-02-18 07:05:35,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:05:26" (2/3) ... [2023-02-18 07:05:35,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48036a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:05:35, skipping insertion in model container [2023-02-18 07:05:35,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:05:35" (3/3) ... [2023-02-18 07:05:35,739 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2023-02-18 07:05:35,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:05:35,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2023-02-18 07:05:35,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:05:35,805 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;@1e58ad4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:05:35,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2023-02-18 07:05:35,813 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) [2023-02-18 07:05:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 07:05:35,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:05:35,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 07:05:35,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:05:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:05:35,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2023-02-18 07:05:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:05:35,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141343451] [2023-02-18 07:05:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:05:35,835 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 [2023-02-18 07:05:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:05:35,847 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) [2023-02-18 07:05:35,890 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 [2023-02-18 07:05:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:05:37,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 07:05:37,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:05:37,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:05:37,483 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 190 [2023-02-18 07:06:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:06:02,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:06:02,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:06:02,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141343451] [2023-02-18 07:06:02,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141343451] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:06:02,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:06:02,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:06:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271322115] [2023-02-18 07:06:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:06:02,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:06:02,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:06:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:06:02,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:06:02,093 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) [2023-02-18 07:06:13,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:06:16,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:06:22,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-18 07:06:26,164 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] [2023-02-18 07:08:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:08:51,729 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2023-02-18 07:08:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:08:51,744 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 [2023-02-18 07:08:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:08:51,775 INFO L225 Difference]: With dead ends: 2077 [2023-02-18 07:08:51,775 INFO L226 Difference]: Without dead ends: 2075 [2023-02-18 07:08:51,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:08:51,778 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.9s 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, 169.4s IncrementalHoareTripleChecker+Time [2023-02-18 07:08:51,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 169.4s Time] [2023-02-18 07:08:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-02-18 07:08:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-02-18 07:08:51,910 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) [2023-02-18 07:08:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2023-02-18 07:08:51,946 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2023-02-18 07:08:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:08:51,946 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2023-02-18 07:08:51,947 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) [2023-02-18 07:08:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2023-02-18 07:08:51,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-18 07:08:51,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:08:51,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-18 07:08:51,971 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 (2)] Forceful destruction successful, exit code 0 [2023-02-18 07:08:52,167 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 [2023-02-18 07:08:52,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:08:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:08:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2023-02-18 07:08:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:08:52,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311878713] [2023-02-18 07:08:52,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:08:52,171 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 [2023-02-18 07:08:52,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:08:52,172 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) [2023-02-18 07:08:52,175 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 [2023-02-18 07:08:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:08:53,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 07:08:53,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:08:53,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:08:53,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:08:53,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:08:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:08:53,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:08:53,813 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 119 [2023-02-18 07:08:53,837 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 [2023-02-18 07:08:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:08:53,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:08:53,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:08:53,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311878713] [2023-02-18 07:08:53,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311878713] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:08:53,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:08:53,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:08:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966119319] [2023-02-18 07:08:53,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:08:53,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:08:53,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:08:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:08:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:08:53,894 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) [2023-02-18 07:09:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:09:00,470 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2023-02-18 07:09:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:09:00,471 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 [2023-02-18 07:09:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:09:00,476 INFO L225 Difference]: With dead ends: 2073 [2023-02-18 07:09:00,476 INFO L226 Difference]: Without dead ends: 2073 [2023-02-18 07:09:00,477 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 [2023-02-18 07:09:00,477 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 6.5s IncrementalHoareTripleChecker+Time [2023-02-18 07:09:00,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-02-18 07:09:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-02-18 07:09:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-02-18 07:09:00,518 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) [2023-02-18 07:09:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2023-02-18 07:09:00,524 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2023-02-18 07:09:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:09:00,524 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2023-02-18 07:09:00,524 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) [2023-02-18 07:09:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2023-02-18 07:09:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:09:00,525 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:09:00,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:09:00,547 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 [2023-02-18 07:09:00,746 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 [2023-02-18 07:09:00,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:09:00,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:09:00,747 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2023-02-18 07:09:00,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:09:00,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510104269] [2023-02-18 07:09:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:09:00,749 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 [2023-02-18 07:09:00,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:09:00,750 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) [2023-02-18 07:09:00,753 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 [2023-02-18 07:09:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:09:01,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 07:09:01,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:09:01,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:09:01,517 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 190 [2023-02-18 07:09:14,394 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 [2023-02-18 07:09:14,424 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 37 treesize of output 19 [2023-02-18 07:09:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:09:14,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:09:14,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:09:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510104269] [2023-02-18 07:09:14,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510104269] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:09:14,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:09:14,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:09:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584337126] [2023-02-18 07:09:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:09:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:09:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:09:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:09:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:09:14,450 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) [2023-02-18 07:09:21,811 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 [] [2023-02-18 07:09:32,702 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 [] [2023-02-18 07:09:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:09:32,832 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2023-02-18 07:09:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:09:32,837 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 [2023-02-18 07:09:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:09:32,843 INFO L225 Difference]: With dead ends: 2072 [2023-02-18 07:09:32,843 INFO L226 Difference]: Without dead ends: 2072 [2023-02-18 07:09:32,843 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 [2023-02-18 07:09:32,844 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6428 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:09:32,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6428 Invalid, 2940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2937 Invalid, 2 Unknown, 0 Unchecked, 18.2s Time] [2023-02-18 07:09:32,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-18 07:09:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-18 07:09:32,867 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) [2023-02-18 07:09:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-18 07:09:32,872 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2023-02-18 07:09:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:09:32,872 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-18 07:09:32,872 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) [2023-02-18 07:09:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-18 07:09:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:09:32,873 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:09:32,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:09:32,892 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 (4)] Ended with exit code 0 [2023-02-18 07:09:33,096 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 [2023-02-18 07:09:33,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:09:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:09:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2023-02-18 07:09:33,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:09:33,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240527311] [2023-02-18 07:09:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:09:33,099 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 [2023-02-18 07:09:33,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:09:33,100 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) [2023-02-18 07:09:33,100 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 [2023-02-18 07:09:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:09:33,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 07:09:33,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:09:33,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:09:33,874 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 190 [2023-02-18 07:09:34,515 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 [2023-02-18 07:09:34,526 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 [2023-02-18 07:09:34,555 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 37 treesize of output 19 [2023-02-18 07:09:34,565 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 [2023-02-18 07:09:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:09:34,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:09:34,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:09:34,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240527311] [2023-02-18 07:09:34,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240527311] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:09:34,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:09:34,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:09:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991444800] [2023-02-18 07:09:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:09:34,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:09:34,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:09:34,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:09:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:09:34,591 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) [2023-02-18 07:09:42,459 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 [] [2023-02-18 07:09:54,368 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 [] [2023-02-18 07:09:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:09:54,515 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2023-02-18 07:09:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:09:54,516 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 [2023-02-18 07:09:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:09:54,522 INFO L225 Difference]: With dead ends: 2071 [2023-02-18 07:09:54,522 INFO L226 Difference]: Without dead ends: 2071 [2023-02-18 07:09:54,522 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 [2023-02-18 07:09:54,522 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2023-02-18 07:09:54,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6488 Invalid, 2878 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2875 Invalid, 2 Unknown, 0 Unchecked, 19.7s Time] [2023-02-18 07:09:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-02-18 07:09:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2023-02-18 07:09:54,543 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) [2023-02-18 07:09:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2023-02-18 07:09:54,548 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2023-02-18 07:09:54,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:09:54,548 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2023-02-18 07:09:54,548 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) [2023-02-18 07:09:54,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2023-02-18 07:09:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 07:09:54,549 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:09:54,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:09:54,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-18 07:09:54,768 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 [2023-02-18 07:09:54,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:09:54,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:09:54,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2023-02-18 07:09:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:09:54,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762606373] [2023-02-18 07:09:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:09:54,771 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 [2023-02-18 07:09:54,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:09:54,787 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) [2023-02-18 07:09:54,788 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 (6)] Waiting until timeout for monitored process [2023-02-18 07:09:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:09:55,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 07:09:55,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:09:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:09:55,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:09:55,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:09:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762606373] [2023-02-18 07:09:55,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762606373] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:09:55,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:09:55,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:09:55,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303420206] [2023-02-18 07:09:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:09:55,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:09:55,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:09:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:09:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:09:55,565 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) [2023-02-18 07:09:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:09:55,654 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2023-02-18 07:09:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:09:55,655 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 [2023-02-18 07:09:55,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:09:55,660 INFO L225 Difference]: With dead ends: 2074 [2023-02-18 07:09:55,660 INFO L226 Difference]: Without dead ends: 2072 [2023-02-18 07:09:55,661 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 [2023-02-18 07:09:55,662 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 [2023-02-18 07:09:55,662 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] [2023-02-18 07:09:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-18 07:09:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-18 07:09:55,685 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) [2023-02-18 07:09:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-18 07:09:55,690 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2023-02-18 07:09:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:09:55,690 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-18 07:09:55,691 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) [2023-02-18 07:09:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-18 07:09:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 07:09:55,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:09:55,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:09:55,715 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 [2023-02-18 07:09:55,912 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 [2023-02-18 07:09:55,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:09:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:09:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2023-02-18 07:09:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:09:55,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250824956] [2023-02-18 07:09:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:09:55,915 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 [2023-02-18 07:09:55,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:09:55,916 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) [2023-02-18 07:09:55,919 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 [2023-02-18 07:09:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:09:56,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 07:09:56,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:09:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:09:56,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:09:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:09:56,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-18 07:09:56,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250824956] [2023-02-18 07:09:56,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250824956] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:09:56,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 07:09:56,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-18 07:09:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113815475] [2023-02-18 07:09:56,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 07:09:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 07:09:56,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-18 07:09:56,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 07:09:56,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-18 07:09:56,845 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) [2023-02-18 07:09:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:09:57,180 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2023-02-18 07:09:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:09:57,184 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 [2023-02-18 07:09:57,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:09:57,189 INFO L225 Difference]: With dead ends: 2084 [2023-02-18 07:09:57,189 INFO L226 Difference]: Without dead ends: 2082 [2023-02-18 07:09:57,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:09:57,191 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 8 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 07:09:57,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9352 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 07:09:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-02-18 07:09:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2023-02-18 07:09:57,232 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) [2023-02-18 07:09:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2023-02-18 07:09:57,241 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2023-02-18 07:09:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:09:57,241 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2023-02-18 07:09:57,241 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) [2023-02-18 07:09:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2023-02-18 07:09:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 07:09:57,242 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:09:57,242 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:09:57,263 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 [2023-02-18 07:09:57,462 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 [2023-02-18 07:09:57,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-18 07:09:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:09:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2023-02-18 07:09:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-18 07:09:57,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706061539] [2023-02-18 07:09:57,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:09:57,465 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 [2023-02-18 07:09:57,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-18 07:09:57,467 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) [2023-02-18 07:09:57,469 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 [2023-02-18 07:10:00,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 07:10:00,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:10:00,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-18 07:10:00,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:10:00,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 07:10:00,856 INFO L217 Elim1Store]: Index analysis took 566 ms [2023-02-18 07:10:00,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 07:10:00,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 76 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 80 case distinctions, treesize of input 128 treesize of output 1820