./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 b5317dae 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-?-b5317da-m [2023-02-16 03:51:15,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:51:15,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:51:15,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:51:15,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:51:15,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:51:15,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:51:16,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:51:16,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:51:16,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:51:16,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:51:16,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:51:16,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:51:16,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:51:16,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:51:16,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:51:16,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:51:16,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:51:16,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:51:16,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:51:16,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:51:16,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:51:16,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:51:16,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:51:16,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:51:16,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:51:16,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:51:16,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:51:16,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:51:16,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:51:16,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:51:16,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:51:16,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:51:16,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:51:16,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:51:16,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:51:16,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:51:16,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:51:16,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:51:16,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:51:16,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:51:16,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:51:16,062 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:51:16,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:51:16,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:51:16,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:51:16,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:51:16,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:51:16,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:51:16,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:51:16,064 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:51:16,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:51:16,065 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:51:16,065 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:51:16,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:51:16,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:51:16,067 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:51:16,067 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:51:16,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:51:16,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:51:16,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:51:16,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:51:16,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:51:16,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:51:16,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:51:16,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:51:16,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:51:16,069 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:51:16,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:51:16,069 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:51:16,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-16 03:51:16,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:51:16,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:51:16,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:51:16,270 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:51:16,271 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:51:16,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-16 03:51:17,244 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:51:17,576 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:51:17,582 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-16 03:51:17,622 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81144e56a/779ab56caa3d4c2fbc4e889a4f948dec/FLAG15c9d4bf8 [2023-02-16 03:51:17,638 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81144e56a/779ab56caa3d4c2fbc4e889a4f948dec [2023-02-16 03:51:17,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:51:17,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:51:17,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:51:17,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:51:17,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:51:17,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:51:17" (1/1) ... [2023-02-16 03:51:17,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a90f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:17, skipping insertion in model container [2023-02-16 03:51:17,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:51:17" (1/1) ... [2023-02-16 03:51:17,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:51:17,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:51:18,238 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] [2023-02-16 03:51:18,265 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-16 03:51:18,274 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-16 03:51:18,287 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-02-16 03:51:18,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:51:18,591 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) [2023-02-16 03:51:18,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67b011d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:18, skipping insertion in model container [2023-02-16 03:51:18,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:51:18,592 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-16 03:51:18,594 INFO L158 Benchmark]: Toolchain (without parser) took 950.75ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 84.9MB in the beginning and 87.6MB in the end (delta: -2.8MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2023-02-16 03:51:18,594 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 03:51:18,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 948.75ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 84.9MB in the beginning and 87.6MB in the end (delta: -2.8MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. [2023-02-16 03:51:18,596 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 130.0MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 948.75ms. Allocated memory was 130.0MB in the beginning and 182.5MB in the end (delta: 52.4MB). Free memory was 84.9MB in the beginning and 87.6MB in the end (delta: -2.8MB). Peak memory consumption was 55.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2246]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:51:20,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:51:20,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:51:20,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:51:20,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:51:20,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:51:20,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:51:20,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:51:20,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:51:20,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:51:20,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:51:20,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:51:20,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:51:20,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:51:20,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:51:20,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:51:20,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:51:20,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:51:20,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:51:20,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:51:20,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:51:20,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:51:20,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:51:20,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:51:20,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:51:20,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:51:20,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:51:20,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:51:20,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:51:20,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:51:20,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:51:20,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:51:20,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:51:20,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:51:20,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:51:20,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:51:20,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:51:20,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:51:20,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:51:20,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:51:20,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:51:20,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-16 03:51:20,335 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:51:20,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:51:20,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:51:20,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:51:20,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:51:20,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:51:20,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:51:20,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:51:20,337 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:51:20,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:51:20,338 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:51:20,338 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:51:20,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:51:20,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:51:20,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:51:20,339 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:51:20,339 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:51:20,339 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:51:20,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:51:20,339 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:51:20,340 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-16 03:51:20,340 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-16 03:51:20,340 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:51:20,340 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:51:20,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:51:20,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:51:20,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:51:20,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:51:20,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:51:20,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:51:20,342 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-16 03:51:20,342 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-16 03:51:20,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:51:20,342 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:51:20,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:51:20,342 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-16 03:51:20,343 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:51:20,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-16 03:51:20,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:51:20,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:51:20,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:51:20,650 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:51:20,653 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:51:20,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-16 03:51:21,870 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:51:22,269 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:51:22,270 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-16 03:51:22,298 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c90abff8/ce914672b57f4a70bbe86b17e3b4aa1a/FLAGffee01d6f [2023-02-16 03:51:22,314 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c90abff8/ce914672b57f4a70bbe86b17e3b4aa1a [2023-02-16 03:51:22,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:51:22,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:51:22,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:51:22,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:51:22,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:51:22,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:51:22" (1/1) ... [2023-02-16 03:51:22,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43aeeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:22, skipping insertion in model container [2023-02-16 03:51:22,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:51:22" (1/1) ... [2023-02-16 03:51:22,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:51:22,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:51:22,940 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] [2023-02-16 03:51:22,967 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-16 03:51:22,978 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-16 03:51:23,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:51:23,349 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-16 03:51:23,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:51:23,416 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] [2023-02-16 03:51:23,421 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-16 03:51:23,424 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-16 03:51:23,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:51:23,625 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:51:23,666 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] [2023-02-16 03:51:23,699 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-16 03:51:23,707 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-16 03:51:23,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:51:23,944 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:51:23,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23 WrapperNode [2023-02-16 03:51:23,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:51:23,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:51:23,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:51:23,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:51:23,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,098 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2023-02-16 03:51:24,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:51:24,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:51:24,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:51:24,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:51:24,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:51:24,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:51:24,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:51:24,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:51:24,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (1/1) ... [2023-02-16 03:51:24,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:51:24,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:51:24,292 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) [2023-02-16 03:51:24,314 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 [2023-02-16 03:51:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-16 03:51:24,329 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-16 03:51:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-16 03:51:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-16 03:51:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-16 03:51:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-16 03:51:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-16 03:51:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-16 03:51:24,330 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-16 03:51:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-16 03:51:24,330 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-16 03:51:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-16 03:51:24,330 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-16 03:51:24,330 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-16 03:51:24,331 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-16 03:51:24,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-16 03:51:24,331 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-16 03:51:24,331 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-16 03:51:24,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-02-16 03:51:24,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-16 03:51:24,332 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-16 03:51:24,332 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-16 03:51:24,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-02-16 03:51:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-16 03:51:24,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-16 03:51:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-16 03:51:24,333 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-16 03:51:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-16 03:51:24,333 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-16 03:51:24,333 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-16 03:51:24,334 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-16 03:51:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:51:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:51:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-16 03:51:24,334 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-16 03:51:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-16 03:51:24,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-16 03:51:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 03:51:24,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:51:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-16 03:51:24,335 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-16 03:51:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-02-16 03:51:24,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-16 03:51:24,336 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:51:24,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-16 03:51:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-16 03:51:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-16 03:51:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-16 03:51:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-16 03:51:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-16 03:51:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-16 03:51:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-16 03:51:24,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-16 03:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-16 03:51:24,338 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-16 03:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-16 03:51:24,338 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-16 03:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-16 03:51:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-16 03:51:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:51:24,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:51:24,844 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:51:24,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:51:24,894 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:24,910 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-16 03:51:24,911 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-16 03:51:24,916 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:25,287 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-16 03:51:25,287 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-16 03:51:25,323 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:25,338 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-16 03:51:25,338 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-16 03:51:25,342 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,448 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,463 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-16 03:51:27,497 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-16 03:51:27,499 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,499 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,500 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-16 03:51:27,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-16 03:51:27,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-16 03:51:27,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-16 03:51:27,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-16 03:51:27,824 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-16 03:51:27,827 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,846 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:27,847 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-16 03:51:31,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-16 03:51:31,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-16 03:51:31,428 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-16 03:51:31,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-16 03:51:31,429 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-16 03:51:31,521 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,586 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-16 03:51:31,586 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-16 03:51:31,593 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,595 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,597 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,600 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,601 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,604 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,605 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:31,606 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-16 03:51:34,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-16 03:51:34,528 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-16 03:51:34,539 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:51:34,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:51:34,551 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-16 03:51:34,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:51:34 BoogieIcfgContainer [2023-02-16 03:51:34,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:51:34,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:51:34,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:51:34,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:51:34,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:51:22" (1/3) ... [2023-02-16 03:51:34,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e54f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:51:34, skipping insertion in model container [2023-02-16 03:51:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:51:23" (2/3) ... [2023-02-16 03:51:34,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e54f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:51:34, skipping insertion in model container [2023-02-16 03:51:34,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:51:34" (3/3) ... [2023-02-16 03:51:34,560 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2023-02-16 03:51:34,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:51:34,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2023-02-16 03:51:34,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:51:34,634 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;@27296f4a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:51:34,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2023-02-16 03:51:34,644 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) [2023-02-16 03:51:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-16 03:51:34,648 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:51:34,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-16 03:51:34,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:51:34,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:51:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2023-02-16 03:51:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:51:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600959427] [2023-02-16 03:51:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:51:34,668 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 [2023-02-16 03:51:34,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:51:34,670 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) [2023-02-16 03:51:34,672 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 [2023-02-16 03:51:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:51:36,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:51:36,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:51:36,441 INFO L321 Elim1Store]: treesize reduction 154, result has 27.7 percent of original size [2023-02-16 03:51:36,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 66 [2023-02-16 03:51:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:51:36,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:51:36,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:51:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600959427] [2023-02-16 03:51:36,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600959427] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:51:36,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:51:36,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:51:36,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11568401] [2023-02-16 03:51:36,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:51:36,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:51:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:51:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:51:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:51:36,521 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) [2023-02-16 03:51:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:51:39,733 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2023-02-16 03:51:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:51:39,735 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 [2023-02-16 03:51:39,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:51:39,748 INFO L225 Difference]: With dead ends: 2077 [2023-02-16 03:51:39,748 INFO L226 Difference]: Without dead ends: 2075 [2023-02-16 03:51:39,749 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 [2023-02-16 03:51:39,751 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:51:39,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-16 03:51:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-02-16 03:51:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-02-16 03:51:39,819 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) [2023-02-16 03:51:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2023-02-16 03:51:39,827 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2023-02-16 03:51:39,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:51:39,827 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2023-02-16 03:51:39,828 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) [2023-02-16 03:51:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2023-02-16 03:51:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-16 03:51:39,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:51:39,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-16 03:51:39,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-16 03:51:40,039 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 [2023-02-16 03:51:40,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:51:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:51:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2023-02-16 03:51:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:51:40,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892476063] [2023-02-16 03:51:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:51:40,042 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 [2023-02-16 03:51:40,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:51:40,090 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) [2023-02-16 03:51:40,092 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 [2023-02-16 03:51:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:51:42,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 03:51:42,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:51:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:51:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:51:42,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:51:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:51:42,468 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-02-16 03:51:42,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2023-02-16 03:51:42,479 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 [2023-02-16 03:51:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:51:42,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:51:42,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:51:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892476063] [2023-02-16 03:51:42,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892476063] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:51:42,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:51:42,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:51:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465212717] [2023-02-16 03:51:42,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:51:42,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:51:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:51:42,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:51:42,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:51:42,505 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) [2023-02-16 03:51:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:51:46,448 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2023-02-16 03:51:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:51:46,464 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 [2023-02-16 03:51:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:51:46,470 INFO L225 Difference]: With dead ends: 2073 [2023-02-16 03:51:46,470 INFO L226 Difference]: Without dead ends: 2073 [2023-02-16 03:51:46,471 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 [2023-02-16 03:51:46,471 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:51:46,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-02-16 03:51:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-02-16 03:51:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-02-16 03:51:46,517 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) [2023-02-16 03:51:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2023-02-16 03:51:46,523 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2023-02-16 03:51:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:51:46,524 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2023-02-16 03:51:46,524 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) [2023-02-16 03:51:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2023-02-16 03:51:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:51:46,524 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:51:46,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:51:46,547 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 (3)] Ended with exit code 0 [2023-02-16 03:51:46,738 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 [2023-02-16 03:51:46,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:51:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:51:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2023-02-16 03:51:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:51:46,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737236256] [2023-02-16 03:51:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:51:46,741 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 [2023-02-16 03:51:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:51:46,743 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) [2023-02-16 03:51:46,745 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 [2023-02-16 03:51:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:51:47,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:51:47,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:51:47,827 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-02-16 03:51:47,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2023-02-16 03:51:47,867 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 [2023-02-16 03:51:47,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-16 03:51:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:51:47,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:51:47,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:51:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737236256] [2023-02-16 03:51:47,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737236256] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:51:47,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:51:47,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:51:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465869203] [2023-02-16 03:51:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:51:47,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:51:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:51:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:51:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:51:47,918 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) [2023-02-16 03:51:52,123 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 [] [2023-02-16 03:51:57,854 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 [] [2023-02-16 03:51:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:51:57,911 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2023-02-16 03:51:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:51:57,912 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 [2023-02-16 03:51:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:51:57,917 INFO L225 Difference]: With dead ends: 2072 [2023-02-16 03:51:57,917 INFO L226 Difference]: Without dead ends: 2072 [2023-02-16 03:51:57,918 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 [2023-02-16 03:51:57,918 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:51:57,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2023-02-16 03:51:57,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-16 03:51:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-16 03:51:57,943 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) [2023-02-16 03:51:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-16 03:51:57,948 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2023-02-16 03:51:57,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:51:57,949 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-16 03:51:57,949 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) [2023-02-16 03:51:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-16 03:51:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:51:57,949 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:51:57,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:51:57,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-16 03:51:58,169 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 [2023-02-16 03:51:58,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:51:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:51:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2023-02-16 03:51:58,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:51:58,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977258391] [2023-02-16 03:51:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:51:58,172 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 [2023-02-16 03:51:58,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:51:58,173 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) [2023-02-16 03:51:58,175 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 (5)] Waiting until timeout for monitored process [2023-02-16 03:51:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:51:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 03:51:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:51:59,263 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2023-02-16 03:51:59,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60 [2023-02-16 03:51:59,286 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 [2023-02-16 03:51:59,293 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 [2023-02-16 03:51:59,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-02-16 03:51:59,333 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 [2023-02-16 03:51:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:51:59,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:51:59,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:51:59,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977258391] [2023-02-16 03:51:59,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977258391] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:51:59,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:51:59,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:51:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170766063] [2023-02-16 03:51:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:51:59,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:51:59,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:51:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:51:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:51:59,353 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) [2023-02-16 03:52:04,609 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 [] [2023-02-16 03:52:12,071 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 [] [2023-02-16 03:52:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:52:12,163 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2023-02-16 03:52:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:52:12,164 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 [2023-02-16 03:52:12,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:52:12,169 INFO L225 Difference]: With dead ends: 2071 [2023-02-16 03:52:12,170 INFO L226 Difference]: Without dead ends: 2071 [2023-02-16 03:52:12,170 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 [2023-02-16 03:52:12,170 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:52:12,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2023-02-16 03:52:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-02-16 03:52:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2023-02-16 03:52:12,196 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) [2023-02-16 03:52:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2023-02-16 03:52:12,201 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2023-02-16 03:52:12,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:52:12,202 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2023-02-16 03:52:12,202 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) [2023-02-16 03:52:12,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2023-02-16 03:52:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 03:52:12,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:52:12,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:52:12,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-02-16 03:52:12,418 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 [2023-02-16 03:52:12,418 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:52:12,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:52:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2023-02-16 03:52:12,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:52:12,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654166502] [2023-02-16 03:52:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:52:12,420 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 [2023-02-16 03:52:12,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:52:12,431 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) [2023-02-16 03:52:12,444 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 [2023-02-16 03:52:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:52:13,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 03:52:13,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:52:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:52:13,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:52:13,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:52:13,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654166502] [2023-02-16 03:52:13,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654166502] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:52:13,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:52:13,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:52:13,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863174289] [2023-02-16 03:52:13,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:52:13,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:52:13,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:52:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:52:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:52:13,531 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) [2023-02-16 03:52:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:52:13,603 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2023-02-16 03:52:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:52:13,604 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 [2023-02-16 03:52:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:52:13,610 INFO L225 Difference]: With dead ends: 2074 [2023-02-16 03:52:13,610 INFO L226 Difference]: Without dead ends: 2072 [2023-02-16 03:52:13,610 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 [2023-02-16 03:52:13,611 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 [2023-02-16 03:52:13,612 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] [2023-02-16 03:52:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-16 03:52:13,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-16 03:52:13,643 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) [2023-02-16 03:52:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-16 03:52:13,650 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2023-02-16 03:52:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:52:13,650 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-16 03:52:13,650 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) [2023-02-16 03:52:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-16 03:52:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 03:52:13,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:52:13,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:52:13,679 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 [2023-02-16 03:52:13,872 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 [2023-02-16 03:52:13,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:52:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:52:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2023-02-16 03:52:13,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:52:13,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505902323] [2023-02-16 03:52:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:52:13,874 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 [2023-02-16 03:52:13,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:52:13,875 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) [2023-02-16 03:52:13,878 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 [2023-02-16 03:52:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:52:14,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:52:14,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:52:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:52:14,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:52:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:52:15,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:52:15,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505902323] [2023-02-16 03:52:15,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505902323] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:52:15,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:52:15,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-16 03:52:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882616146] [2023-02-16 03:52:15,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:52:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:52:15,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:52:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:52:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:52:15,118 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) [2023-02-16 03:52:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:52:15,390 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2023-02-16 03:52:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 03:52:15,391 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 [2023-02-16 03:52:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:52:15,397 INFO L225 Difference]: With dead ends: 2084 [2023-02-16 03:52:15,398 INFO L226 Difference]: Without dead ends: 2082 [2023-02-16 03:52:15,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-02-16 03:52:15,400 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 8 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:52:15,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9352 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:52:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-02-16 03:52:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2023-02-16 03:52:15,465 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) [2023-02-16 03:52:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2023-02-16 03:52:15,470 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2023-02-16 03:52:15,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:52:15,470 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2023-02-16 03:52:15,470 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) [2023-02-16 03:52:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2023-02-16 03:52:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 03:52:15,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:52:15,471 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:52:15,497 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 [2023-02-16 03:52:15,690 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 [2023-02-16 03:52:15,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:52:15,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:52:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2023-02-16 03:52:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:52:15,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190926560] [2023-02-16 03:52:15,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:52:15,693 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 [2023-02-16 03:52:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:52:15,694 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) [2023-02-16 03:52:15,697 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 [2023-02-16 03:52:17,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:52:17,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:52:17,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 03:52:17,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:52:17,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:17,593 INFO L321 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2023-02-16 03:52:17,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 81 [2023-02-16 03:52:18,575 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-02-16 03:52:18,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2023-02-16 03:52:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 03:52:18,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:52:18,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:52:18,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190926560] [2023-02-16 03:52:18,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190926560] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:52:18,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:52:18,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:52:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151156423] [2023-02-16 03:52:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:52:18,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:52:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:52:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:52:18,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:52:18,642 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:52:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:52:38,029 INFO L93 Difference]: Finished difference Result 2431 states and 2784 transitions. [2023-02-16 03:52:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:52:38,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-16 03:52:38,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:52:38,036 INFO L225 Difference]: With dead ends: 2431 [2023-02-16 03:52:38,037 INFO L226 Difference]: Without dead ends: 2431 [2023-02-16 03:52:38,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:52:38,053 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1839 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:52:38,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3392 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 19.3s Time] [2023-02-16 03:52:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-02-16 03:52:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2273. [2023-02-16 03:52:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1191 states have (on average 2.1007556675062973) internal successors, (2502), 2166 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 30 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-16 03:52:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 2705 transitions. [2023-02-16 03:52:38,101 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 2705 transitions. Word has length 17 [2023-02-16 03:52:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:52:38,101 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 2705 transitions. [2023-02-16 03:52:38,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:52:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 2705 transitions. [2023-02-16 03:52:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-16 03:52:38,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:52:38,102 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:52:38,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-02-16 03:52:38,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:52:38,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:52:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:52:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2023-02-16 03:52:38,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:52:38,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759967710] [2023-02-16 03:52:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:52:38,327 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 [2023-02-16 03:52:38,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:52:38,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:52:38,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-16 03:52:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:52:39,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:52:39,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:52:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:52:39,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:52:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:52:39,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:52:39,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759967710] [2023-02-16 03:52:39,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759967710] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:52:39,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:52:39,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-16 03:52:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93851755] [2023-02-16 03:52:39,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:52:39,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 03:52:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:52:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 03:52:39,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:52:39,560 INFO L87 Difference]: Start difference. First operand 2273 states and 2705 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:52:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:52:40,080 INFO L93 Difference]: Finished difference Result 2292 states and 2728 transitions. [2023-02-16 03:52:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 03:52:40,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-16 03:52:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:52:40,085 INFO L225 Difference]: With dead ends: 2292 [2023-02-16 03:52:40,086 INFO L226 Difference]: Without dead ends: 2282 [2023-02-16 03:52:40,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:52:40,086 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 16 mSDsluCounter, 11691 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14032 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:52:40,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14032 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:52:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-02-16 03:52:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2282. [2023-02-16 03:52:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 1200 states have (on average 2.0908333333333333) internal successors, (2509), 2175 states have internal predecessors, (2509), 112 states have call successors, (112), 31 states have call predecessors, (112), 30 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-16 03:52:40,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 2712 transitions. [2023-02-16 03:52:40,111 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 2712 transitions. Word has length 17 [2023-02-16 03:52:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:52:40,112 INFO L495 AbstractCegarLoop]: Abstraction has 2282 states and 2712 transitions. [2023-02-16 03:52:40,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:52:40,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 2712 transitions. [2023-02-16 03:52:40,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 03:52:40,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:52:40,112 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:52:40,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-16 03:52:40,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:52:40,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:52:40,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:52:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2023-02-16 03:52:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:52:40,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116765219] [2023-02-16 03:52:40,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:52:40,327 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 [2023-02-16 03:52:40,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:52:40,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:52:40,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-16 03:52:42,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:52:42,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:52:42,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 03:52:42,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:52:42,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:42,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:42,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:42,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:43,131 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-02-16 03:52:43,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 41 [2023-02-16 03:52:43,229 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2023-02-16 03:52:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 163 treesize of output 160 [2023-02-16 03:52:43,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:52:43,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:52:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-16 03:52:43,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:52:43,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:52:43,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116765219] [2023-02-16 03:52:43,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116765219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:52:43,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:52:43,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:52:43,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494225976] [2023-02-16 03:52:43,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:52:43,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:52:43,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:52:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:52:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:52:43,613 INFO L87 Difference]: Start difference. First operand 2282 states and 2712 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:53:01,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:53:01,346 INFO L93 Difference]: Finished difference Result 2314 states and 2756 transitions. [2023-02-16 03:53:01,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:53:01,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-02-16 03:53:01,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:53:01,353 INFO L225 Difference]: With dead ends: 2314 [2023-02-16 03:53:01,353 INFO L226 Difference]: Without dead ends: 2314 [2023-02-16 03:53:01,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:53:01,354 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 254 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:53:01,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 4950 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1894 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-02-16 03:53:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2023-02-16 03:53:01,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2288. [2023-02-16 03:53:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 1205 states have (on average 2.086307053941909) internal successors, (2514), 2179 states have internal predecessors, (2514), 112 states have call successors, (112), 33 states have call predecessors, (112), 32 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-16 03:53:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2717 transitions. [2023-02-16 03:53:01,379 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2717 transitions. Word has length 23 [2023-02-16 03:53:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:53:01,379 INFO L495 AbstractCegarLoop]: Abstraction has 2288 states and 2717 transitions. [2023-02-16 03:53:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:53:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2717 transitions. [2023-02-16 03:53:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 03:53:01,380 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:53:01,380 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:53:01,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-16 03:53:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:53:01,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:53:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:53:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2023-02-16 03:53:01,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:53:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818031919] [2023-02-16 03:53:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:53:01,605 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 [2023-02-16 03:53:01,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:53:01,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:53:01,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-16 03:53:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:53:02,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 03:53:02,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:53:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:53:02,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:53:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:53:03,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:53:03,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818031919] [2023-02-16 03:53:03,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818031919] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:53:03,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:53:03,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-16 03:53:03,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995674571] [2023-02-16 03:53:03,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:53:03,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:53:03,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:53:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:53:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:53:03,477 INFO L87 Difference]: Start difference. First operand 2288 states and 2717 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:53:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:53:06,016 INFO L93 Difference]: Finished difference Result 2322 states and 2761 transitions. [2023-02-16 03:53:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-16 03:53:06,017 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-16 03:53:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:53:06,022 INFO L225 Difference]: With dead ends: 2322 [2023-02-16 03:53:06,022 INFO L226 Difference]: Without dead ends: 2306 [2023-02-16 03:53:06,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2023-02-16 03:53:06,027 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 28 mSDsluCounter, 28071 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30414 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:53:06,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 30414 Invalid, 475 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-16 03:53:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-02-16 03:53:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-02-16 03:53:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 1223 states have (on average 2.070318887980376) internal successors, (2532), 2197 states have internal predecessors, (2532), 112 states have call successors, (112), 33 states have call predecessors, (112), 32 states have return successors, (91), 85 states have call predecessors, (91), 89 states have call successors, (91) [2023-02-16 03:53:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 2735 transitions. [2023-02-16 03:53:06,069 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 2735 transitions. Word has length 25 [2023-02-16 03:53:06,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:53:06,070 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 2735 transitions. [2023-02-16 03:53:06,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:53:06,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 2735 transitions. [2023-02-16 03:53:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 03:53:06,071 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:53:06,071 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:53:06,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-16 03:53:06,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:53:06,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:53:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:53:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2023-02-16 03:53:06,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:53:06,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209124894] [2023-02-16 03:53:06,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:53:06,287 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 [2023-02-16 03:53:06,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:53:06,300 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:53:06,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-16 03:53:09,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:53:09,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:53:09,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 03:53:09,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:53:09,387 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-16 03:53:09,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2023-02-16 03:53:12,424 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2023-02-16 03:53:12,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68 [2023-02-16 03:53:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-02-16 03:53:12,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:53:12,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:53:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209124894] [2023-02-16 03:53:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209124894] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:53:12,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:53:12,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:53:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707908815] [2023-02-16 03:53:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:53:12,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:53:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:53:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:53:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:53:12,659 INFO L87 Difference]: Start difference. First operand 2306 states and 2735 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:53:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:53:20,530 INFO L93 Difference]: Finished difference Result 3255 states and 3741 transitions. [2023-02-16 03:53:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:53:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-02-16 03:53:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:53:20,544 INFO L225 Difference]: With dead ends: 3255 [2023-02-16 03:53:20,544 INFO L226 Difference]: Without dead ends: 3255 [2023-02-16 03:53:20,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:53:20,545 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 3517 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3517 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:53:20,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3517 Valid, 2621 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-02-16 03:53:20,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2023-02-16 03:53:20,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 2741. [2023-02-16 03:53:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 1629 states have (on average 2.0828729281767955) internal successors, (3393), 2604 states have internal predecessors, (3393), 138 states have call successors, (138), 46 states have call predecessors, (138), 43 states have return successors, (117), 101 states have call predecessors, (117), 115 states have call successors, (117) [2023-02-16 03:53:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3648 transitions. [2023-02-16 03:53:20,591 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3648 transitions. Word has length 37 [2023-02-16 03:53:20,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:53:20,592 INFO L495 AbstractCegarLoop]: Abstraction has 2741 states and 3648 transitions. [2023-02-16 03:53:20,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:53:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3648 transitions. [2023-02-16 03:53:20,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 03:53:20,595 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:53:20,595 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:53:20,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-16 03:53:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:53:20,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:53:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:53:20,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2023-02-16 03:53:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:53:20,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171235423] [2023-02-16 03:53:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:53:20,810 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 [2023-02-16 03:53:20,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:53:20,821 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:53:20,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-16 03:53:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:53:21,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 03:53:21,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:53:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:53:22,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:53:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:53:24,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:53:24,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171235423] [2023-02-16 03:53:24,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171235423] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:53:24,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:53:24,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-16 03:53:24,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198834684] [2023-02-16 03:53:24,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:53:24,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-16 03:53:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:53:24,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-16 03:53:24,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-02-16 03:53:24,250 INFO L87 Difference]: Start difference. First operand 2741 states and 3648 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:53:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:53:34,162 INFO L93 Difference]: Finished difference Result 2841 states and 3770 transitions. [2023-02-16 03:53:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-02-16 03:53:34,162 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-02-16 03:53:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:53:34,168 INFO L225 Difference]: With dead ends: 2841 [2023-02-16 03:53:34,168 INFO L226 Difference]: Without dead ends: 2789 [2023-02-16 03:53:34,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2023-02-16 03:53:34,171 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 69 mSDsluCounter, 58541 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 60887 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:53:34,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 60887 Invalid, 1697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-16 03:53:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2023-02-16 03:53:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2023-02-16 03:53:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 1677 states have (on average 2.0518783542039354) internal successors, (3441), 2652 states have internal predecessors, (3441), 138 states have call successors, (138), 46 states have call predecessors, (138), 43 states have return successors, (117), 101 states have call predecessors, (117), 115 states have call successors, (117) [2023-02-16 03:53:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3696 transitions. [2023-02-16 03:53:34,201 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3696 transitions. Word has length 37 [2023-02-16 03:53:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:53:34,202 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 3696 transitions. [2023-02-16 03:53:34,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:53:34,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3696 transitions. [2023-02-16 03:53:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-16 03:53:34,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:53:34,203 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:53:34,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-16 03:53:34,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:53:34,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:53:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:53:34,418 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2023-02-16 03:53:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:53:34,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477285079] [2023-02-16 03:53:34,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:53:34,421 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 [2023-02-16 03:53:34,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:53:34,422 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:53:34,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-16 03:53:37,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:53:37,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:53:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-16 03:53:37,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:53:37,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:37,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2023-02-16 03:53:37,776 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-16 03:53:37,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2023-02-16 03:53:42,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:53:42,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:53:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-02-16 03:53:42,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:53:42,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:53:42,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477285079] [2023-02-16 03:53:42,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477285079] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:53:42,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:53:42,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:53:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204243126] [2023-02-16 03:53:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:53:42,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:53:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:53:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:53:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:53:42,667 INFO L87 Difference]: Start difference. First operand 2789 states and 3696 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:53:57,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:54:00,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:54:03,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:54:06,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:54:08,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:54:10,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:54:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:54:18,403 INFO L93 Difference]: Finished difference Result 4669 states and 5397 transitions. [2023-02-16 03:54:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:54:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-02-16 03:54:18,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:54:18,414 INFO L225 Difference]: With dead ends: 4669 [2023-02-16 03:54:18,415 INFO L226 Difference]: Without dead ends: 4669 [2023-02-16 03:54:18,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:54:18,416 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 8184 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 414 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8184 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 3524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:54:18,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8184 Valid, 2543 Invalid, 3524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 3109 Invalid, 1 Unknown, 0 Unchecked, 35.5s Time] [2023-02-16 03:54:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2023-02-16 03:54:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 3548. [2023-02-16 03:54:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2365 states have (on average 2.041014799154334) internal successors, (4827), 3343 states have internal predecessors, (4827), 192 states have call successors, (192), 70 states have call predecessors, (192), 69 states have return successors, (175), 152 states have call predecessors, (175), 169 states have call successors, (175) [2023-02-16 03:54:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 5194 transitions. [2023-02-16 03:54:18,476 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 5194 transitions. Word has length 61 [2023-02-16 03:54:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:54:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 5194 transitions. [2023-02-16 03:54:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:54:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 5194 transitions. [2023-02-16 03:54:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 03:54:18,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:54:18,477 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:54:18,501 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 (14)] Forceful destruction successful, exit code 0 [2023-02-16 03:54:18,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:54:18,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:54:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:54:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2023-02-16 03:54:18,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:54:18,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501167650] [2023-02-16 03:54:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:54:18,695 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 [2023-02-16 03:54:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:54:18,709 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:54:18,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-16 03:54:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:54:20,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-16 03:54:20,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:54:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:54:22,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:54:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:54:31,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:54:31,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501167650] [2023-02-16 03:54:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501167650] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:54:31,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:54:31,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2023-02-16 03:54:31,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124888201] [2023-02-16 03:54:31,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:54:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-16 03:54:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:54:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-16 03:54:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2023-02-16 03:54:31,475 INFO L87 Difference]: Start difference. First operand 3548 states and 5194 transitions. Second operand has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:55:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:55:21,971 INFO L93 Difference]: Finished difference Result 3816 states and 5508 transitions. [2023-02-16 03:55:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-02-16 03:55:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-02-16 03:55:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:55:21,978 INFO L225 Difference]: With dead ends: 3816 [2023-02-16 03:55:21,979 INFO L226 Difference]: Without dead ends: 3668 [2023-02-16 03:55:21,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=13940, Invalid=32070, Unknown=0, NotChecked=0, Total=46010 [2023-02-16 03:55:21,986 INFO L413 NwaCegarLoop]: 2354 mSDtfsCounter, 143 mSDsluCounter, 112804 mSDsCounter, 0 mSdLazyCounter, 6168 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 115158 SdHoareTripleChecker+Invalid, 6330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 6168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:55:21,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 115158 Invalid, 6330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [162 Valid, 6168 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-02-16 03:55:21,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2023-02-16 03:55:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3668. [2023-02-16 03:55:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2485 states have (on average 1.9907444668008047) internal successors, (4947), 3463 states have internal predecessors, (4947), 192 states have call successors, (192), 70 states have call predecessors, (192), 69 states have return successors, (175), 152 states have call predecessors, (175), 169 states have call successors, (175) [2023-02-16 03:55:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5314 transitions. [2023-02-16 03:55:22,024 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5314 transitions. Word has length 63 [2023-02-16 03:55:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:55:22,025 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 5314 transitions. [2023-02-16 03:55:22,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 03:55:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5314 transitions. [2023-02-16 03:55:22,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-02-16 03:55:22,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:55:22,027 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:55:22,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-16 03:55:22,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:55:22,244 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-16 03:55:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:55:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash -387940330, now seen corresponding path program 2 times [2023-02-16 03:55:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:55:22,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239804363] [2023-02-16 03:55:22,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:55:22,247 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 [2023-02-16 03:55:22,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:55:22,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:55:22,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-16 03:55:23,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:55:23,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:55:23,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:55:23,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:55:23,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:55:24,089 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2023-02-16 03:55:24,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2023-02-16 03:55:27,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:55:27,856 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-02-16 03:55:27,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2023-02-16 03:55:28,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:55:28,226 INFO L321 Elim1Store]: treesize reduction 62, result has 19.5 percent of original size [2023-02-16 03:55:28,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2023-02-16 03:55:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-02-16 03:55:28,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:55:28,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:55:28,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239804363] [2023-02-16 03:55:28,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239804363] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:55:28,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:55:28,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:55:28,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995530418] [2023-02-16 03:55:28,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:55:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:55:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:55:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:55:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:55:28,343 INFO L87 Difference]: Start difference. First operand 3668 states and 5314 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:55:29,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 03:55:31,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]