./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 7e1ff0e6 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-?-7e1ff0e [2023-02-15 01:42:23,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 01:42:23,186 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 01:42:23,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 01:42:23,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 01:42:23,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 01:42:23,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 01:42:23,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 01:42:23,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 01:42:23,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 01:42:23,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 01:42:23,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 01:42:23,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 01:42:23,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 01:42:23,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 01:42:23,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 01:42:23,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 01:42:23,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 01:42:23,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 01:42:23,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 01:42:23,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 01:42:23,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 01:42:23,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 01:42:23,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 01:42:23,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 01:42:23,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 01:42:23,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 01:42:23,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 01:42:23,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 01:42:23,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 01:42:23,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 01:42:23,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 01:42:23,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 01:42:23,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 01:42:23,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 01:42:23,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 01:42:23,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 01:42:23,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 01:42:23,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 01:42:23,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 01:42:23,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 01:42:23,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-15 01:42:23,272 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 01:42:23,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 01:42:23,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 01:42:23,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 01:42:23,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 01:42:23,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 01:42:23,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 01:42:23,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 01:42:23,275 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 01:42:23,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 01:42:23,276 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 01:42:23,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 01:42:23,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 01:42:23,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 01:42:23,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 01:42:23,277 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 01:42:23,277 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 01:42:23,277 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 01:42:23,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 01:42:23,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 01:42:23,277 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 01:42:23,278 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 01:42:23,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 01:42:23,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 01:42:23,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 01:42:23,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:42:23,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 01:42:23,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 01:42:23,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 01:42:23,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 01:42:23,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 01:42:23,279 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 01:42:23,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 01:42:23,280 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 01:42:23,280 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-15 01:42:23,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 01:42:23,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 01:42:23,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 01:42:23,491 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 01:42:23,491 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 01:42:23,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 01:42:24,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 01:42:24,994 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 01:42:24,996 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 01:42:25,041 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff49e49e/fe86ffee275843b0848dceb4acd50d4e/FLAG52abd08bc [2023-02-15 01:42:25,055 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eff49e49e/fe86ffee275843b0848dceb4acd50d4e [2023-02-15 01:42:25,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 01:42:25,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 01:42:25,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 01:42:25,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 01:42:25,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 01:42:25,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:42:25" (1/1) ... [2023-02-15 01:42:25,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f07c06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:25, skipping insertion in model container [2023-02-15 01:42:25,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:42:25" (1/1) ... [2023-02-15 01:42:25,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 01:42:25,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 01:42:25,624 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 01:42:25,652 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 01:42:25,660 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 01:42:25,671 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-02-15 01:42:25,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:42:25,938 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-15 01:42:25,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@cb6090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:25, skipping insertion in model container [2023-02-15 01:42:25,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 01:42:25,939 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-15 01:42:25,940 INFO L158 Benchmark]: Toolchain (without parser) took 880.64ms. Allocated memory is still 172.0MB. Free memory was 122.9MB in the beginning and 101.9MB in the end (delta: 21.0MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2023-02-15 01:42:25,940 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 01:42:25,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 877.30ms. Allocated memory is still 172.0MB. Free memory was 122.9MB in the beginning and 101.9MB in the end (delta: 21.0MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2023-02-15 01:42:25,941 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 142.6MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 877.30ms. Allocated memory is still 172.0MB. Free memory was 122.9MB in the beginning and 101.9MB in the end (delta: 21.0MB). Peak memory consumption was 66.7MB. 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-?-7e1ff0e [2023-02-15 01:42:27,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 01:42:27,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 01:42:27,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 01:42:27,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 01:42:27,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 01:42:27,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 01:42:27,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 01:42:27,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 01:42:27,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 01:42:27,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 01:42:27,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 01:42:27,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 01:42:27,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 01:42:27,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 01:42:27,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 01:42:27,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 01:42:27,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 01:42:27,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 01:42:27,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 01:42:27,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 01:42:27,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 01:42:27,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 01:42:27,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 01:42:27,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 01:42:27,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 01:42:27,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 01:42:27,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 01:42:27,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 01:42:27,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 01:42:27,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 01:42:27,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 01:42:27,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 01:42:27,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 01:42:27,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 01:42:27,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 01:42:27,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 01:42:27,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 01:42:27,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 01:42:27,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 01:42:27,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 01:42:27,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-15 01:42:27,748 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 01:42:27,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 01:42:27,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 01:42:27,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 01:42:27,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 01:42:27,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 01:42:27,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 01:42:27,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 01:42:27,751 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 01:42:27,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 01:42:27,751 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 01:42:27,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 01:42:27,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 01:42:27,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 01:42:27,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 01:42:27,752 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-15 01:42:27,752 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-15 01:42:27,753 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-15 01:42:27,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 01:42:27,753 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 01:42:27,753 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 01:42:27,753 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 01:42:27,753 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 01:42:27,754 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 01:42:27,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 01:42:27,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 01:42:27,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 01:42:27,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:42:27,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 01:42:27,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 01:42:27,755 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 01:42:27,760 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 01:42:27,760 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 01:42:27,760 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 01:42:27,761 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 01:42:27,761 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 01:42:27,761 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 01:42:27,761 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-15 01:42:28,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 01:42:28,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 01:42:28,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 01:42:28,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 01:42:28,043 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 01:42:28,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 01:42:29,015 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 01:42:29,377 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 01:42:29,378 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-15 01:42:29,411 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f91f96c2/1a2d8325dce8458dbbe4b71f9a2cb708/FLAG8a866bfb1 [2023-02-15 01:42:29,425 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f91f96c2/1a2d8325dce8458dbbe4b71f9a2cb708 [2023-02-15 01:42:29,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 01:42:29,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 01:42:29,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 01:42:29,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 01:42:29,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 01:42:29,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:42:29" (1/1) ... [2023-02-15 01:42:29,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d47aebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:29, skipping insertion in model container [2023-02-15 01:42:29,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:42:29" (1/1) ... [2023-02-15 01:42:29,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 01:42:29,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 01:42:29,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 01:42:29,954 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 01:42:29,964 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 01:42:30,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:42:30,304 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-15 01:42:30,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 01:42:30,367 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 01:42:30,370 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 01:42:30,372 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 01:42:30,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:42:30,539 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 01:42:30,575 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2023-02-15 01:42:30,596 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-15 01:42:30,599 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-15 01:42:30,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 01:42:30,817 INFO L208 MainTranslator]: Completed translation [2023-02-15 01:42:30,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30 WrapperNode [2023-02-15 01:42:30,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 01:42:30,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 01:42:30,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 01:42:30,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 01:42:30,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:30,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,015 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2023-02-15 01:42:31,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 01:42:31,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 01:42:31,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 01:42:31,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 01:42:31,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 01:42:31,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 01:42:31,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 01:42:31,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 01:42:31,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (1/1) ... [2023-02-15 01:42:31,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 01:42:31,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 01:42:31,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 01:42:31,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 01:42:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-15 01:42:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-15 01:42:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-15 01:42:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-15 01:42:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-15 01:42:31,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-15 01:42:31,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-15 01:42:31,394 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-15 01:42:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-15 01:42:31,394 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-15 01:42:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-15 01:42:31,394 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-15 01:42:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-15 01:42:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-15 01:42:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-15 01:42:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-15 01:42:31,395 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-15 01:42:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-15 01:42:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-02-15 01:42:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-15 01:42:31,396 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-15 01:42:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-15 01:42:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-02-15 01:42:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-15 01:42:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-15 01:42:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-15 01:42:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-15 01:42:31,397 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-15 01:42:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-15 01:42:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-15 01:42:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-15 01:42:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 01:42:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 01:42:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-15 01:42:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-15 01:42:31,398 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-15 01:42:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-15 01:42:31,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 01:42:31,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 01:42:31,399 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-15 01:42:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-15 01:42:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-02-15 01:42:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-02-15 01:42:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-15 01:42:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 01:42:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-15 01:42:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-15 01:42:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-15 01:42:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-15 01:42:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 01:42:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-15 01:42:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-15 01:42:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 01:42:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-15 01:42:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-15 01:42:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-15 01:42:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-15 01:42:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-15 01:42:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-15 01:42:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-15 01:42:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-15 01:42:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-15 01:42:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-15 01:42:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-15 01:42:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-15 01:42:31,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 01:42:31,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 01:42:31,870 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 01:42:31,873 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 01:42:31,916 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:31,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 01:42:31,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 01:42:31,929 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:32,250 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 01:42:32,250 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 01:42:32,284 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:32,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-15 01:42:32,297 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-15 01:42:32,301 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,436 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,451 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-15 01:42:34,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-15 01:42:34,486 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,487 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,487 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,750 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-15 01:42:34,750 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-15 01:42:34,751 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-15 01:42:34,751 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-15 01:42:34,751 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-15 01:42:34,751 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-15 01:42:34,754 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,762 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:34,763 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,354 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-15 01:42:38,354 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-15 01:42:38,354 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-15 01:42:38,354 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-15 01:42:38,355 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-15 01:42:38,355 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-15 01:42:38,447 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,529 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 01:42:38,529 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 01:42:38,538 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,541 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,543 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,548 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,549 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,553 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,556 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:38,557 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-15 01:42:41,476 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-15 01:42:41,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-15 01:42:41,488 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 01:42:41,500 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 01:42:41,500 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-15 01:42:41,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:42:41 BoogieIcfgContainer [2023-02-15 01:42:41,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 01:42:41,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 01:42:41,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 01:42:41,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 01:42:41,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:42:29" (1/3) ... [2023-02-15 01:42:41,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a1c442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:42:41, skipping insertion in model container [2023-02-15 01:42:41,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:42:30" (2/3) ... [2023-02-15 01:42:41,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a1c442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:42:41, skipping insertion in model container [2023-02-15 01:42:41,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:42:41" (3/3) ... [2023-02-15 01:42:41,510 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2023-02-15 01:42:41,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 01:42:41,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2023-02-15 01:42:41,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 01:42:41,586 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;@543387d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 01:42:41,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2023-02-15 01:42:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2023-02-15 01:42:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 01:42:41,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:42:41,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 01:42:41,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:42:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:42:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2023-02-15 01:42:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:42:41,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832171321] [2023-02-15 01:42:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:42:41,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:42:41,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:42:41,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:42:41,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 01:42:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:42:43,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 01:42:43,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:42:43,459 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2023-02-15 01:42:43,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 36 [2023-02-15 01:42:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:42:43,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:42:43,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:42:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832171321] [2023-02-15 01:42:43,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832171321] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:42:43,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:42:43,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 01:42:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267892913] [2023-02-15 01:42:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:42:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 01:42:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:42:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 01:42:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:42:43,542 INFO L87 Difference]: Start difference. First operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:42:46,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:42:46,353 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2023-02-15 01:42:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 01:42:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-15 01:42:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:42:46,382 INFO L225 Difference]: With dead ends: 2077 [2023-02-15 01:42:46,382 INFO L226 Difference]: Without dead ends: 2075 [2023-02-15 01:42:46,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:42:46,385 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-15 01:42:46,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-15 01:42:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-02-15 01:42:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-02-15 01:42:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1017 states have (on average 2.1435594886922322) internal successors, (2180), 1991 states have internal predecessors, (2180), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 01:42:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2023-02-15 01:42:46,490 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2023-02-15 01:42:46,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:42:46,490 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2023-02-15 01:42:46,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:42:46,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2023-02-15 01:42:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-15 01:42:46,491 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:42:46,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-15 01:42:46,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 01:42:46,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:42:46,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:42:46,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:42:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2023-02-15 01:42:46,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:42:46,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522202423] [2023-02-15 01:42:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:42:46,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:42:46,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:42:46,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:42:46,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 01:42:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:42:48,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 01:42:48,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:42:48,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:42:48,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:42:48,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:42:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:42:48,700 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-02-15 01:42:48,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2023-02-15 01:42:48,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-02-15 01:42:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:42:48,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:42:48,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:42:48,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522202423] [2023-02-15 01:42:48,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522202423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:42:48,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:42:48,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 01:42:48,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131766945] [2023-02-15 01:42:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:42:48,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 01:42:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:42:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 01:42:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:42:48,765 INFO L87 Difference]: Start difference. First operand 2075 states and 2347 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:42:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:42:52,545 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2023-02-15 01:42:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 01:42:52,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-02-15 01:42:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:42:52,552 INFO L225 Difference]: With dead ends: 2073 [2023-02-15 01:42:52,552 INFO L226 Difference]: Without dead ends: 2073 [2023-02-15 01:42:52,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 01:42:52,553 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-02-15 01:42:52,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-02-15 01:42:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-02-15 01:42:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-02-15 01:42:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1017 states have (on average 2.1415929203539825) internal successors, (2178), 1989 states have internal predecessors, (2178), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 01:42:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2023-02-15 01:42:52,587 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2023-02-15 01:42:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:42:52,588 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2023-02-15 01:42:52,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:42:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2023-02-15 01:42:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 01:42:52,604 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:42:52,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 01:42:52,629 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 [2023-02-15 01:42:52,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:42:52,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:42:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:42:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2023-02-15 01:42:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:42:52,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422711342] [2023-02-15 01:42:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:42:52,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:42:52,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:42:52,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:42:52,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 01:42:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:42:53,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 01:42:53,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:42:53,787 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-02-15 01:42:53,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2023-02-15 01:42:53,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-15 01:42:53,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-15 01:42:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:42:53,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:42:53,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:42:53,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422711342] [2023-02-15 01:42:53,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422711342] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:42:53,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:42:53,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:42:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264231795] [2023-02-15 01:42:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:42:53,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:42:53,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:42:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:42:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:42:53,837 INFO L87 Difference]: Start difference. First operand 2073 states and 2345 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:42:57,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 01:43:03,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 01:43:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:43:03,358 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2023-02-15 01:43:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 01:43:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 01:43:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:43:03,364 INFO L225 Difference]: With dead ends: 2072 [2023-02-15 01:43:03,364 INFO L226 Difference]: Without dead ends: 2072 [2023-02-15 01:43:03,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 01:43:03,368 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s 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, 9.4s IncrementalHoareTripleChecker+Time [2023-02-15 01:43:03,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2023-02-15 01:43:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-15 01:43:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-15 01:43:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 01:43:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-15 01:43:03,408 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2023-02-15 01:43:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:43:03,408 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-15 01:43:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:43:03,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-15 01:43:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 01:43:03,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:43:03,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 01:43:03,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-02-15 01:43:03,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:03,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:43:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:43:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2023-02-15 01:43:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:43:03,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230793621] [2023-02-15 01:43:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:43:03,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:03,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:43:03,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:43:03,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 01:43:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:43:04,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 01:43:04,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:43:04,737 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2023-02-15 01:43:04,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60 [2023-02-15 01:43:04,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-15 01:43:04,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-15 01:43:04,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-02-15 01:43:04,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-15 01:43:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:43:04,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:43:04,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:43:04,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230793621] [2023-02-15 01:43:04,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230793621] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:43:04,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:43:04,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:43:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894488940] [2023-02-15 01:43:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:43:04,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:43:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:43:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:43:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:43:04,837 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:43:09,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 01:43:16,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 01:43:16,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:43:16,449 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2023-02-15 01:43:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 01:43:16,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 01:43:16,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:43:16,455 INFO L225 Difference]: With dead ends: 2071 [2023-02-15 01:43:16,455 INFO L226 Difference]: Without dead ends: 2071 [2023-02-15 01:43:16,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 01:43:16,456 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s 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, 11.5s IncrementalHoareTripleChecker+Time [2023-02-15 01:43:16,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2023-02-15 01:43:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-02-15 01:43:16,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2023-02-15 01:43:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1016 states have (on average 2.141732283464567) internal successors, (2176), 1987 states have internal predecessors, (2176), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 01:43:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2023-02-15 01:43:16,482 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2023-02-15 01:43:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:43:16,482 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2023-02-15 01:43:16,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 01:43:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2023-02-15 01:43:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 01:43:16,483 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:43:16,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:43:16,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 01:43:16,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:16,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:43:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:43:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2023-02-15 01:43:16,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:43:16,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833565840] [2023-02-15 01:43:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:43:16,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:16,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:43:16,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:43:16,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 01:43:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:43:17,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 01:43:17,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:43:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:43:17,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:43:17,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:43:17,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833565840] [2023-02-15 01:43:17,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833565840] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:43:17,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:43:17,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:43:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695595872] [2023-02-15 01:43:17,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:43:17,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 01:43:17,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:43:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 01:43:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:43:17,635 INFO L87 Difference]: Start difference. First operand 2071 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:43:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:43:17,730 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2023-02-15 01:43:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 01:43:17,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-15 01:43:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:43:17,735 INFO L225 Difference]: With dead ends: 2074 [2023-02-15 01:43:17,735 INFO L226 Difference]: Without dead ends: 2072 [2023-02-15 01:43:17,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:43:17,736 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 01:43:17,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7018 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 01:43:17,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-15 01:43:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-15 01:43:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 01:43:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-15 01:43:17,762 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2023-02-15 01:43:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:43:17,762 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-15 01:43:17,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:43:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-15 01:43:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 01:43:17,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:43:17,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:43:17,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 01:43:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:17,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:43:17,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:43:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2023-02-15 01:43:17,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:43:17,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071271632] [2023-02-15 01:43:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:43:17,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:43:18,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:43:18,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 01:43:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:43:18,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 01:43:18,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:43:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:43:18,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:43:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:43:18,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:43:18,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071271632] [2023-02-15 01:43:18,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071271632] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:43:18,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:43:18,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 01:43:18,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093894734] [2023-02-15 01:43:18,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:43:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 01:43:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:43:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 01:43:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-15 01:43:18,964 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:43:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:43:19,234 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2023-02-15 01:43:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 01:43:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-02-15 01:43:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:43:19,240 INFO L225 Difference]: With dead ends: 2084 [2023-02-15 01:43:19,241 INFO L226 Difference]: Without dead ends: 2082 [2023-02-15 01:43:19,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-02-15 01:43:19,242 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 8 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:43:19,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9352 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 01:43:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-02-15 01:43:19,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2023-02-15 01:43:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1026 states have (on average 2.1335282651072123) internal successors, (2189), 1997 states have internal predecessors, (2189), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2023-02-15 01:43:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2023-02-15 01:43:19,269 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2023-02-15 01:43:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:43:19,270 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2023-02-15 01:43:19,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:43:19,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2023-02-15 01:43:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 01:43:19,270 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:43:19,271 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:43:19,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-15 01:43:19,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:19,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:43:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:43:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2023-02-15 01:43:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:43:19,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737211039] [2023-02-15 01:43:19,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:43:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:43:19,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:43:19,488 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:43:19,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 01:43:22,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 01:43:22,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:43:22,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 01:43:22,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:43:22,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:22,747 INFO L217 Elim1Store]: Index analysis took 194 ms [2023-02-15 01:43:24,192 INFO L321 Elim1Store]: treesize reduction 1683, result has 16.4 percent of original size [2023-02-15 01:43:24,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 75 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 80 case distinctions, treesize of input 152 treesize of output 443 [2023-02-15 01:43:25,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-15 01:43:26,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 66 [2023-02-15 01:43:35,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:35,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:35,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:43:36,418 INFO L321 Elim1Store]: treesize reduction 286, result has 33.5 percent of original size [2023-02-15 01:43:36,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 142 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 131 treesize of output 267 [2023-02-15 01:43:37,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 01:43:37,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:43:37,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:43:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737211039] [2023-02-15 01:43:37,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737211039] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:43:37,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:43:37,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 01:43:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896572927] [2023-02-15 01:43:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:43:37,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 01:43:37,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:43:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 01:43:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-15 01:43:37,851 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:43:43,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:43:46,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:43:50,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:44:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:44:51,815 INFO L93 Difference]: Finished difference Result 3138 states and 3580 transitions. [2023-02-15 01:44:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 01:44:51,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 01:44:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:44:51,824 INFO L225 Difference]: With dead ends: 3138 [2023-02-15 01:44:51,825 INFO L226 Difference]: Without dead ends: 3138 [2023-02-15 01:44:51,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-02-15 01:44:51,826 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1897 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 5914 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5914 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.8s IncrementalHoareTripleChecker+Time [2023-02-15 01:44:51,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 7826 Invalid, 5932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 5914 Invalid, 2 Unknown, 0 Unchecked, 69.8s Time] [2023-02-15 01:44:51,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2023-02-15 01:44:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2621. [2023-02-15 01:44:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 1521 states have (on average 2.1341222879684416) internal successors, (3246), 2498 states have internal predecessors, (3246), 131 states have call successors, (131), 37 states have call predecessors, (131), 34 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 01:44:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3487 transitions. [2023-02-15 01:44:51,907 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3487 transitions. Word has length 17 [2023-02-15 01:44:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:44:51,907 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 3487 transitions. [2023-02-15 01:44:51,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:44:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3487 transitions. [2023-02-15 01:44:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 01:44:51,908 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:44:51,908 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:44:51,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-15 01:44:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:44:52,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:44:52,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:44:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2023-02-15 01:44:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:44:52,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161108947] [2023-02-15 01:44:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:44:52,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:44:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:44:52,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:44:52,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 01:44:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:44:53,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 01:44:53,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:44:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:44:53,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:44:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:44:53,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:44:53,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161108947] [2023-02-15 01:44:53,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161108947] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:44:53,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:44:53,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-15 01:44:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242359011] [2023-02-15 01:44:53,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:44:53,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 01:44:53,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:44:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 01:44:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-15 01:44:53,383 INFO L87 Difference]: Start difference. First operand 2621 states and 3487 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:44:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:44:54,010 INFO L93 Difference]: Finished difference Result 2649 states and 3519 transitions. [2023-02-15 01:44:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 01:44:54,010 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-02-15 01:44:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:44:54,017 INFO L225 Difference]: With dead ends: 2649 [2023-02-15 01:44:54,018 INFO L226 Difference]: Without dead ends: 2633 [2023-02-15 01:44:54,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2023-02-15 01:44:54,018 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 15 mSDsluCounter, 14024 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16365 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 01:44:54,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16365 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 01:44:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2023-02-15 01:44:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2023-02-15 01:44:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 1533 states have (on average 2.1239399869536855) internal successors, (3256), 2510 states have internal predecessors, (3256), 131 states have call successors, (131), 37 states have call predecessors, (131), 34 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 01:44:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3497 transitions. [2023-02-15 01:44:54,052 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3497 transitions. Word has length 17 [2023-02-15 01:44:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:44:54,053 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3497 transitions. [2023-02-15 01:44:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:44:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3497 transitions. [2023-02-15 01:44:54,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 01:44:54,053 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:44:54,053 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:44:54,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-15 01:44:54,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:44:54,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:44:54,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:44:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2023-02-15 01:44:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:44:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596362908] [2023-02-15 01:44:54,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:44:54,287 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 [2023-02-15 01:44:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:44:54,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:44:54,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-15 01:44:57,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 01:44:57,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:44:57,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 01:44:57,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:44:57,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:57,993 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-02-15 01:44:57,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2023-02-15 01:44:58,023 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-02-15 01:44:58,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2023-02-15 01:44:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:44:58,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 01:44:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-15 01:44:58,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:44:58,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:44:58,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596362908] [2023-02-15 01:44:58,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596362908] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:44:58,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:44:58,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 01:44:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683338902] [2023-02-15 01:44:58,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:44:58,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:44:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:44:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:44:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:44:58,344 INFO L87 Difference]: Start difference. First operand 2633 states and 3497 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:45:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:45:16,232 INFO L93 Difference]: Finished difference Result 2665 states and 3541 transitions. [2023-02-15 01:45:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 01:45:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-02-15 01:45:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:45:16,240 INFO L225 Difference]: With dead ends: 2665 [2023-02-15 01:45:16,240 INFO L226 Difference]: Without dead ends: 2665 [2023-02-15 01:45:16,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:45:16,240 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 206 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 5032 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-02-15 01:45:16,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 5032 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2023-02-15 01:45:16,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2023-02-15 01:45:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2639. [2023-02-15 01:45:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1538 states have (on average 2.1202860858257475) internal successors, (3261), 2514 states have internal predecessors, (3261), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 01:45:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3502 transitions. [2023-02-15 01:45:16,273 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3502 transitions. Word has length 23 [2023-02-15 01:45:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:45:16,273 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 3502 transitions. [2023-02-15 01:45:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:45:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3502 transitions. [2023-02-15 01:45:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 01:45:16,274 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:45:16,274 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:45:16,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-15 01:45:16,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:16,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:45:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:45:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2023-02-15 01:45:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:45:16,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987029056] [2023-02-15 01:45:16,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:45:16,499 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:16,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:45:16,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:45:16,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-15 01:45:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:45:17,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 01:45:17,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:45:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:45:17,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:45:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:45:18,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:45:18,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987029056] [2023-02-15 01:45:18,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987029056] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:45:18,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:45:18,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-15 01:45:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701437122] [2023-02-15 01:45:18,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:45:18,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 01:45:18,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:45:18,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 01:45:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-02-15 01:45:18,098 INFO L87 Difference]: Start difference. First operand 2639 states and 3502 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:45:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:45:19,944 INFO L93 Difference]: Finished difference Result 2691 states and 3564 transitions. [2023-02-15 01:45:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 01:45:19,945 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-15 01:45:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:45:19,958 INFO L225 Difference]: With dead ends: 2691 [2023-02-15 01:45:19,959 INFO L226 Difference]: Without dead ends: 2663 [2023-02-15 01:45:19,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2023-02-15 01:45:19,960 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 26 mSDsluCounter, 32736 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35079 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 01:45:19,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35079 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 01:45:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-02-15 01:45:19,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2023-02-15 01:45:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1562 states have (on average 2.1030729833546733) internal successors, (3285), 2538 states have internal predecessors, (3285), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 01:45:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3526 transitions. [2023-02-15 01:45:19,998 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3526 transitions. Word has length 25 [2023-02-15 01:45:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:45:19,998 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3526 transitions. [2023-02-15 01:45:19,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:45:19,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3526 transitions. [2023-02-15 01:45:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 01:45:19,999 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:45:19,999 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:45:20,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-15 01:45:20,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:20,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:45:20,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:45:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2023-02-15 01:45:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:45:20,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390288430] [2023-02-15 01:45:20,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:45:20,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:20,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:45:20,216 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:45:20,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-15 01:45:23,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 01:45:23,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:45:23,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 01:45:23,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:45:23,667 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-15 01:45:23,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2023-02-15 01:45:25,852 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2023-02-15 01:45:25,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68 [2023-02-15 01:45:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-02-15 01:45:26,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:45:26,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:45:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390288430] [2023-02-15 01:45:26,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390288430] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:45:26,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:45:26,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 01:45:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965291582] [2023-02-15 01:45:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:45:26,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 01:45:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:45:26,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 01:45:26,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:45:26,074 INFO L87 Difference]: Start difference. First operand 2663 states and 3526 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:45:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:45:38,283 INFO L93 Difference]: Finished difference Result 3174 states and 3613 transitions. [2023-02-15 01:45:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 01:45:38,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-02-15 01:45:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:45:38,289 INFO L225 Difference]: With dead ends: 3174 [2023-02-15 01:45:38,289 INFO L226 Difference]: Without dead ends: 3174 [2023-02-15 01:45:38,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 01:45:38,289 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1831 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-02-15 01:45:38,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3600 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-02-15 01:45:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2023-02-15 01:45:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2660. [2023-02-15 01:45:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 1562 states have (on average 2.0992317541613317) internal successors, (3279), 2535 states have internal predecessors, (3279), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 01:45:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3520 transitions. [2023-02-15 01:45:38,318 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3520 transitions. Word has length 37 [2023-02-15 01:45:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:45:38,319 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 3520 transitions. [2023-02-15 01:45:38,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:45:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3520 transitions. [2023-02-15 01:45:38,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 01:45:38,321 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:45:38,321 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:45:38,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-15 01:45:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:38,542 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:45:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:45:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2023-02-15 01:45:38,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:45:38,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422728370] [2023-02-15 01:45:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:45:38,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:45:38,545 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:45:38,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-15 01:45:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:45:39,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 01:45:39,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:45:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:45:39,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:45:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:45:41,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:45:41,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422728370] [2023-02-15 01:45:41,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422728370] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:45:41,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:45:41,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-15 01:45:41,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573911440] [2023-02-15 01:45:41,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:45:41,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-15 01:45:41,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:45:41,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-15 01:45:41,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-02-15 01:45:41,905 INFO L87 Difference]: Start difference. First operand 2660 states and 3520 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:45:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:45:51,134 INFO L93 Difference]: Finished difference Result 2760 states and 3642 transitions. [2023-02-15 01:45:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-02-15 01:45:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-02-15 01:45:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:45:51,148 INFO L225 Difference]: With dead ends: 2760 [2023-02-15 01:45:51,148 INFO L226 Difference]: Without dead ends: 2708 [2023-02-15 01:45:51,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2023-02-15 01:45:51,151 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 70 mSDsluCounter, 53882 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 56228 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-15 01:45:51,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 56228 Invalid, 1718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-02-15 01:45:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2023-02-15 01:45:51,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2023-02-15 01:45:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 1610 states have (on average 2.0664596273291926) internal successors, (3327), 2583 states have internal predecessors, (3327), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2023-02-15 01:45:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3568 transitions. [2023-02-15 01:45:51,180 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3568 transitions. Word has length 37 [2023-02-15 01:45:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:45:51,181 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3568 transitions. [2023-02-15 01:45:51,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 01:45:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3568 transitions. [2023-02-15 01:45:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 01:45:51,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:45:51,186 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:45:51,225 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 (13)] Ended with exit code 0 [2023-02-15 01:45:51,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:51,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:45:51,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:45:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2023-02-15 01:45:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:45:51,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106889381] [2023-02-15 01:45:51,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 01:45:51,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:45:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:45:51,431 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:45:51,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-15 01:45:54,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 01:45:54,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 01:45:55,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 01:45:55,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:45:55,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:55,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2023-02-15 01:45:55,311 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-15 01:45:55,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2023-02-15 01:45:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 01:45:59,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-15 01:45:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-02-15 01:45:59,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 01:45:59,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:45:59,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106889381] [2023-02-15 01:45:59,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106889381] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 01:45:59,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 01:45:59,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 01:45:59,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182740055] [2023-02-15 01:45:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 01:45:59,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 01:45:59,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:45:59,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 01:45:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:45:59,453 INFO L87 Difference]: Start difference. First operand 2708 states and 3568 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:46:13,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:46:16,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:46:18,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:46:20,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-15 01:46:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 01:46:28,305 INFO L93 Difference]: Finished difference Result 4545 states and 5200 transitions. [2023-02-15 01:46:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 01:46:28,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2023-02-15 01:46:28,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 01:46:28,311 INFO L225 Difference]: With dead ends: 4545 [2023-02-15 01:46:28,311 INFO L226 Difference]: Without dead ends: 4545 [2023-02-15 01:46:28,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-15 01:46:28,312 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 3815 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4108 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2023-02-15 01:46:28,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3815 Valid, 3113 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4108 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2023-02-15 01:46:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2023-02-15 01:46:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 3424. [2023-02-15 01:46:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 2263 states have (on average 2.0556783031374284) internal successors, (4652), 3239 states have internal predecessors, (4652), 181 states have call successors, (181), 59 states have call predecessors, (181), 58 states have return successors, (164), 142 states have call predecessors, (164), 158 states have call successors, (164) [2023-02-15 01:46:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4997 transitions. [2023-02-15 01:46:28,363 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4997 transitions. Word has length 61 [2023-02-15 01:46:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 01:46:28,363 INFO L495 AbstractCegarLoop]: Abstraction has 3424 states and 4997 transitions. [2023-02-15 01:46:28,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 01:46:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4997 transitions. [2023-02-15 01:46:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-15 01:46:28,364 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 01:46:28,364 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 01:46:28,399 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 [2023-02-15 01:46:28,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:46:28,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-15 01:46:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 01:46:28,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2023-02-15 01:46:28,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 01:46:28,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470449043] [2023-02-15 01:46:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 01:46:28,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 01:46:28,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 01:46:28,588 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 01:46:28,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-15 01:46:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 01:46:29,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 01:46:29,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 01:46:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:46:31,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 01:46:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 01:46:37,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 01:46:37,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470449043] [2023-02-15 01:46:37,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470449043] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 01:46:37,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 01:46:37,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2023-02-15 01:46:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869685425] [2023-02-15 01:46:37,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 01:46:37,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-15 01:46:37,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 01:46:37,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-15 01:46:37,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2023-02-15 01:46:37,504 INFO L87 Difference]: Start difference. First operand 3424 states and 4997 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)