./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 3dbbec33 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-?-3dbbec3 [2023-02-14 14:00:20,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:00:20,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:00:20,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:00:20,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:00:20,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:00:20,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:00:20,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:00:20,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:00:20,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:00:20,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:00:20,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:00:20,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:00:20,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:00:20,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:00:20,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:00:20,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:00:20,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:00:20,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:00:20,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:00:20,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:00:20,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:00:20,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:00:20,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:00:20,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:00:20,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:00:20,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:00:20,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:00:20,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:00:20,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:00:20,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:00:20,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:00:20,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:00:20,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:00:20,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:00:20,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:00:20,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:00:20,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:00:20,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:00:20,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:00:20,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:00:20,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 14:00:20,385 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:00:20,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:00:20,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:00:20,385 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:00:20,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 14:00:20,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 14:00:20,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:00:20,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:00:20,387 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:00:20,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:00:20,387 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 14:00:20,387 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:00:20,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:00:20,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 14:00:20,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:00:20,388 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 14:00:20,388 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 14:00:20,388 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 14:00:20,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 14:00:20,388 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 14:00:20,388 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 14:00:20,389 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:00:20,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:00:20,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:00:20,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 14:00:20,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:00:20,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:00:20,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 14:00:20,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:00:20,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 14:00:20,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 14:00:20,390 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 14:00:20,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 14:00:20,390 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 14:00:20,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-14 14:00:20,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:00:20,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:00:20,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:00:20,576 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:00:20,577 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:00:20,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-14 14:00:21,501 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:00:21,845 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:00:21,846 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-14 14:00:21,875 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e0e3be1/ba24089782684b9baf88fc3f0a89ce45/FLAG01a4f2ca2 [2023-02-14 14:00:21,886 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8e0e3be1/ba24089782684b9baf88fc3f0a89ce45 [2023-02-14 14:00:21,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:00:21,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:00:21,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:00:21,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:00:21,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:00:21,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:00:21" (1/1) ... [2023-02-14 14:00:21,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b84df76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:21, skipping insertion in model container [2023-02-14 14:00:21,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:00:21" (1/1) ... [2023-02-14 14:00:21,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:00:21,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:00:22,453 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] [2023-02-14 14:00:22,473 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 14:00:22,483 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 14:00:22,497 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2023-02-14 14:00:22,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:00:22,788 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) [2023-02-14 14:00:22,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56b68c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:22, skipping insertion in model container [2023-02-14 14:00:22,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:00:22,789 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-14 14:00:22,791 INFO L158 Benchmark]: Toolchain (without parser) took 899.96ms. Allocated memory is still 104.9MB. Free memory was 53.6MB in the beginning and 43.1MB in the end (delta: 10.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-02-14 14:00:22,791 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:00:22,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 897.86ms. Allocated memory is still 104.9MB. Free memory was 53.6MB in the beginning and 43.1MB in the end (delta: 10.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-02-14 14:00:22,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 897.86ms. Allocated memory is still 104.9MB. Free memory was 53.6MB in the beginning and 43.1MB in the end (delta: 10.5MB). Peak memory consumption was 35.5MB. 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-?-3dbbec3 [2023-02-14 14:00:24,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:00:24,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:00:24,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:00:24,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:00:24,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:00:24,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:00:24,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:00:24,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:00:24,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:00:24,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:00:24,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:00:24,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:00:24,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:00:24,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:00:24,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:00:24,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:00:24,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:00:24,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:00:24,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:00:24,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:00:24,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:00:24,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:00:24,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:00:24,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:00:24,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:00:24,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:00:24,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:00:24,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:00:24,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:00:24,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:00:24,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:00:24,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:00:24,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:00:24,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:00:24,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:00:24,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:00:24,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:00:24,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:00:24,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:00:24,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:00:24,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-14 14:00:24,479 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:00:24,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:00:24,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:00:24,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:00:24,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 14:00:24,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 14:00:24,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:00:24,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:00:24,482 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:00:24,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:00:24,483 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 14:00:24,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:00:24,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:00:24,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 14:00:24,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:00:24,483 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 14:00:24,484 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 14:00:24,484 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 14:00:24,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 14:00:24,484 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 14:00:24,484 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-14 14:00:24,484 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-14 14:00:24,485 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 14:00:24,485 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:00:24,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:00:24,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:00:24,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 14:00:24,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:00:24,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:00:24,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 14:00:24,486 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-14 14:00:24,486 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-14 14:00:24,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 14:00:24,486 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 14:00:24,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 14:00:24,487 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-14 14:00:24,487 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 14:00:24,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2023-02-14 14:00:24,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:00:24,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:00:24,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:00:24,782 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:00:24,782 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:00:24,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-14 14:00:25,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:00:26,152 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:00:26,152 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2023-02-14 14:00:26,186 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc95e1045/1d67e4ae67f24731a0bda9f922142f2d/FLAG8e2fcf088 [2023-02-14 14:00:26,202 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc95e1045/1d67e4ae67f24731a0bda9f922142f2d [2023-02-14 14:00:26,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:00:26,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:00:26,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:00:26,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:00:26,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:00:26,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:00:26" (1/1) ... [2023-02-14 14:00:26,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c03a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:26, skipping insertion in model container [2023-02-14 14:00:26,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:00:26" (1/1) ... [2023-02-14 14:00:26,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:00:26,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:00:26,800 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] [2023-02-14 14:00:26,834 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 14:00:26,842 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 14:00:27,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:00:27,170 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-14 14:00:27,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:00:27,243 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] [2023-02-14 14:00:27,247 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 14:00:27,249 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 14:00:27,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:00:27,456 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:00:27,499 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] [2023-02-14 14:00:27,505 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 14:00:27,508 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 14:00:27,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:00:27,737 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:00:27,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27 WrapperNode [2023-02-14 14:00:27,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:00:27,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:00:27,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:00:27,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:00:27,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:27,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:27,949 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2023-02-14 14:00:27,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:00:27,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:00:27,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:00:27,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:00:27,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:27,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:27,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:27,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:28,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:28,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:28,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:28,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:28,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:00:28,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:00:28,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:00:28,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:00:28,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (1/1) ... [2023-02-14 14:00:28,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:00:28,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:00:28,120 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) [2023-02-14 14:00:28,136 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 [2023-02-14 14:00:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-14 14:00:28,151 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-14 14:00:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-02-14 14:00:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-14 14:00:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-14 14:00:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-14 14:00:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-14 14:00:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-14 14:00:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-14 14:00:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-14 14:00:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-14 14:00:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-14 14:00:28,152 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-14 14:00:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-14 14:00:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-14 14:00:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-14 14:00:28,153 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-14 14:00:28,153 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-14 14:00:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-02-14 14:00:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-02-14 14:00:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-14 14:00:28,154 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-14 14:00:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-02-14 14:00:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-14 14:00:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-14 14:00:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-14 14:00:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-14 14:00:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-14 14:00:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-14 14:00:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-14 14:00:28,155 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-14 14:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 14:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 14:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-14 14:00:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-14 14:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-14 14:00:28,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-14 14:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 14:00:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 14:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-14 14:00:28,157 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-14 14:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-02-14 14:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-02-14 14:00:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-14 14:00:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-14 14:00:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-14 14:00:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-14 14:00:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-14 14:00:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-14 14:00:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-14 14:00:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-14 14:00:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-02-14 14:00:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-14 14:00:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-14 14:00:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-14 14:00:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-14 14:00:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-14 14:00:28,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-14 14:00:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:00:28,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:00:28,571 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:00:28,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:00:28,618 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:28,630 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-14 14:00:28,630 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-14 14:00:28,635 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:28,966 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-14 14:00:28,967 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-14 14:00:28,998 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:29,009 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-14 14:00:29,009 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-14 14:00:29,013 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,109 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,125 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,158 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-14 14:00:31,158 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-14 14:00:31,160 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,161 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,162 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-14 14:00:31,500 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-14 14:00:31,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-14 14:00:31,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-14 14:00:31,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-14 14:00:31,501 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-14 14:00:31,504 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,515 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:31,517 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-14 14:00:35,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-14 14:00:35,252 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-14 14:00:35,252 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-14 14:00:35,252 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-14 14:00:35,252 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-14 14:00:35,364 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,452 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-14 14:00:35,452 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-14 14:00:35,462 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,463 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,465 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,468 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,469 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,472 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,481 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:35,483 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-14 14:00:38,996 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-14 14:00:38,997 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-14 14:00:39,007 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:00:39,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:00:39,018 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 14:00:39,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:00:39 BoogieIcfgContainer [2023-02-14 14:00:39,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:00:39,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 14:00:39,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 14:00:39,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 14:00:39,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:00:26" (1/3) ... [2023-02-14 14:00:39,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2e05e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:00:39, skipping insertion in model container [2023-02-14 14:00:39,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:00:27" (2/3) ... [2023-02-14 14:00:39,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2e05e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:00:39, skipping insertion in model container [2023-02-14 14:00:39,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:00:39" (3/3) ... [2023-02-14 14:00:39,026 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2023-02-14 14:00:39,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 14:00:39,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2023-02-14 14:00:39,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 14:00:39,088 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;@7e474a2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 14:00:39,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2023-02-14 14:00:39,097 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) [2023-02-14 14:00:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-14 14:00:39,100 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:00:39,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-14 14:00:39,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:00:39,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:00:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2023-02-14 14:00:39,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:00:39,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057072309] [2023-02-14 14:00:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:00:39,116 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 [2023-02-14 14:00:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:00:39,119 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) [2023-02-14 14:00:39,134 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 [2023-02-14 14:00:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:00:40,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 14:00:40,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:00:40,977 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2023-02-14 14:00:40,978 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 [2023-02-14 14:00:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:00:41,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:00:41,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:00:41,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057072309] [2023-02-14 14:00:41,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057072309] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:00:41,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:00:41,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:00:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536231496] [2023-02-14 14:00:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:00:41,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:00:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:00:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:00:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:00:41,052 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) [2023-02-14 14:00:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:00:44,078 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2023-02-14 14:00:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:00:44,083 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 [2023-02-14 14:00:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:00:44,097 INFO L225 Difference]: With dead ends: 2077 [2023-02-14 14:00:44,097 INFO L226 Difference]: Without dead ends: 2075 [2023-02-14 14:00:44,098 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 [2023-02-14 14:00:44,100 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.9s IncrementalHoareTripleChecker+Time [2023-02-14 14:00:44,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-14 14:00:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-02-14 14:00:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2023-02-14 14:00:44,180 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) [2023-02-14 14:00:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2023-02-14 14:00:44,190 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2023-02-14 14:00:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:00:44,191 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2023-02-14 14:00:44,191 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) [2023-02-14 14:00:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2023-02-14 14:00:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-02-14 14:00:44,191 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:00:44,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-02-14 14:00:44,210 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 [2023-02-14 14:00:44,403 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 [2023-02-14 14:00:44,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:00:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:00:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2023-02-14 14:00:44,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:00:44,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976002280] [2023-02-14 14:00:44,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:00:44,406 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 [2023-02-14 14:00:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:00:44,407 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) [2023-02-14 14:00:44,409 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 [2023-02-14 14:00:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:00:46,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 14:00:46,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:00:46,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:00:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:00:46,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:00:46,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:00:46,289 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-02-14 14:00:46,290 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 [2023-02-14 14:00:46,328 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 [2023-02-14 14:00:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:00:46,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:00:46,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:00:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976002280] [2023-02-14 14:00:46,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976002280] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:00:46,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:00:46,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:00:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558754111] [2023-02-14 14:00:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:00:46,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:00:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:00:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:00:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:00:46,361 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) [2023-02-14 14:00:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:00:50,016 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2023-02-14 14:00:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:00:50,025 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 [2023-02-14 14:00:50,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:00:50,034 INFO L225 Difference]: With dead ends: 2073 [2023-02-14 14:00:50,034 INFO L226 Difference]: Without dead ends: 2073 [2023-02-14 14:00:50,034 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 [2023-02-14 14:00:50,038 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-14 14:00:50,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-14 14:00:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-02-14 14:00:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2023-02-14 14:00:50,072 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) [2023-02-14 14:00:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2023-02-14 14:00:50,079 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2023-02-14 14:00:50,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:00:50,079 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2023-02-14 14:00:50,080 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) [2023-02-14 14:00:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2023-02-14 14:00:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 14:00:50,080 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:00:50,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 14:00:50,101 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 [2023-02-14 14:00:50,289 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 [2023-02-14 14:00:50,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:00:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:00:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2023-02-14 14:00:50,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:00:50,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897711752] [2023-02-14 14:00:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:00:50,292 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 [2023-02-14 14:00:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:00:50,293 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) [2023-02-14 14:00:50,295 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 [2023-02-14 14:00:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:00:51,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 14:00:51,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:00:51,245 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2023-02-14 14:00:51,245 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 [2023-02-14 14:00:51,273 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 [2023-02-14 14:00:51,301 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 [2023-02-14 14:00:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:00:51,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:00:51,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:00:51,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897711752] [2023-02-14 14:00:51,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897711752] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:00:51,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:00:51,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:00:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550592813] [2023-02-14 14:00:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:00:51,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:00:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:00:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:00:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:00:51,314 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) [2023-02-14 14:00:55,646 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 [] [2023-02-14 14:01:01,478 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 [] [2023-02-14 14:01:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:01,540 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2023-02-14 14:01:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 14:01:01,541 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 [2023-02-14 14:01:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:01,546 INFO L225 Difference]: With dead ends: 2072 [2023-02-14 14:01:01,546 INFO L226 Difference]: Without dead ends: 2072 [2023-02-14 14:01:01,547 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 [2023-02-14 14:01:01,548 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:01:01,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2023-02-14 14:01:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-14 14:01:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-14 14:01:01,576 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) [2023-02-14 14:01:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-14 14:01:01,583 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2023-02-14 14:01:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:01,583 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-14 14:01:01,584 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) [2023-02-14 14:01:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-14 14:01:01,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 14:01:01,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:01,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 14:01:01,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-14 14:01:01,797 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 [2023-02-14 14:01:01,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:01:01,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:01,798 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2023-02-14 14:01:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:01:01,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175429485] [2023-02-14 14:01:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:01,799 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 [2023-02-14 14:01:01,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:01:01,841 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) [2023-02-14 14:01:01,848 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 [2023-02-14 14:01:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:02,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-14 14:01:02,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:01:02,853 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2023-02-14 14:01:02,854 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 [2023-02-14 14:01:02,887 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 [2023-02-14 14:01:02,896 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 [2023-02-14 14:01:02,928 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 [2023-02-14 14:01:02,934 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 [2023-02-14 14:01:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:02,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:01:02,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:01:02,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175429485] [2023-02-14 14:01:02,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175429485] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:02,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:02,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:01:02,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050934402] [2023-02-14 14:01:02,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:02,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:01:02,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:01:02,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:01:02,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:01:02,952 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) [2023-02-14 14:01:07,783 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 [] [2023-02-14 14:01:14,427 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 [] [2023-02-14 14:01:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:14,490 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2023-02-14 14:01:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 14:01:14,491 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 [2023-02-14 14:01:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:14,502 INFO L225 Difference]: With dead ends: 2071 [2023-02-14 14:01:14,502 INFO L226 Difference]: Without dead ends: 2071 [2023-02-14 14:01:14,502 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 [2023-02-14 14:01:14,504 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-02-14 14:01:14,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2023-02-14 14:01:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2023-02-14 14:01:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2023-02-14 14:01:14,531 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) [2023-02-14 14:01:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2023-02-14 14:01:14,538 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2023-02-14 14:01:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:14,539 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2023-02-14 14:01:14,539 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) [2023-02-14 14:01:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2023-02-14 14:01:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 14:01:14,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:14,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:14,563 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 [2023-02-14 14:01:14,753 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 [2023-02-14 14:01:14,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:01:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2023-02-14 14:01:14,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:01:14,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731695083] [2023-02-14 14:01:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:14,755 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 [2023-02-14 14:01:14,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:01:14,756 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) [2023-02-14 14:01:14,757 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 [2023-02-14 14:01:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:15,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:01:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:01:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:15,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:01:15,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:01:15,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731695083] [2023-02-14 14:01:15,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731695083] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:15,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:15,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:01:15,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490541212] [2023-02-14 14:01:15,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:15,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 14:01:15,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:01:15,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:01:15,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:01:15,599 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) [2023-02-14 14:01:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:15,659 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2023-02-14 14:01:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:01:15,660 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 [2023-02-14 14:01:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:15,665 INFO L225 Difference]: With dead ends: 2074 [2023-02-14 14:01:15,665 INFO L226 Difference]: Without dead ends: 2072 [2023-02-14 14:01:15,665 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 [2023-02-14 14:01:15,666 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 [2023-02-14 14:01:15,666 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] [2023-02-14 14:01:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-02-14 14:01:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2023-02-14 14:01:15,688 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) [2023-02-14 14:01:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2023-02-14 14:01:15,692 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2023-02-14 14:01:15,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:15,693 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2023-02-14 14:01:15,693 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) [2023-02-14 14:01:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2023-02-14 14:01:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 14:01:15,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:15,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:15,714 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 [2023-02-14 14:01:15,913 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 [2023-02-14 14:01:15,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:01:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:15,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2023-02-14 14:01:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:01:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355351694] [2023-02-14 14:01:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:01:15,916 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 [2023-02-14 14:01:15,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:01:15,917 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) [2023-02-14 14:01:15,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-14 14:01:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:01:16,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:01:16,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:01:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:16,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:01:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:01:16,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:01:16,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355351694] [2023-02-14 14:01:16,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355351694] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:01:16,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 14:01:16,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-14 14:01:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861319408] [2023-02-14 14:01:16,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 14:01:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 14:01:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:01:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 14:01:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 14:01:16,848 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) [2023-02-14 14:01:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:01:17,028 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2023-02-14 14:01:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 14:01:17,029 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 [2023-02-14 14:01:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:01:17,034 INFO L225 Difference]: With dead ends: 2084 [2023-02-14 14:01:17,034 INFO L226 Difference]: Without dead ends: 2082 [2023-02-14 14:01:17,034 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 [2023-02-14 14:01:17,035 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 [2023-02-14 14:01:17,035 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] [2023-02-14 14:01:17,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-02-14 14:01:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2023-02-14 14:01:17,056 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) [2023-02-14 14:01:17,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2023-02-14 14:01:17,060 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2023-02-14 14:01:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:01:17,060 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2023-02-14 14:01:17,060 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) [2023-02-14 14:01:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2023-02-14 14:01:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 14:01:17,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:01:17,061 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:01:17,092 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 [2023-02-14 14:01:17,273 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 [2023-02-14 14:01:17,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:01:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:01:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2023-02-14 14:01:17,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:01:17,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069636586] [2023-02-14 14:01:17,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:01:17,276 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 [2023-02-14 14:01:17,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:01:17,277 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) [2023-02-14 14:01:17,279 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 [2023-02-14 14:01:19,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 14:01:19,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:01:19,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-14 14:01:19,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:01:20,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:20,303 INFO L217 Elim1Store]: Index analysis took 136 ms [2023-02-14 14:01:22,228 INFO L321 Elim1Store]: treesize reduction 1683, result has 16.4 percent of original size [2023-02-14 14:01:22,229 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 [2023-02-14 14:01:23,543 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 [2023-02-14 14:01:25,709 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 [2023-02-14 14:01:35,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:35,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:01:36,069 INFO L321 Elim1Store]: treesize reduction 286, result has 33.5 percent of original size [2023-02-14 14:01:36,070 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 [2023-02-14 14:01:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 14:01:37,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:01:37,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:01:37,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069636586] [2023-02-14 14:01:37,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069636586] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:01:37,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:01:37,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-14 14:01:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732897218] [2023-02-14 14:01:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:01:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 14:01:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:01:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 14:01:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-14 14:01:37,739 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) [2023-02-14 14:01:42,641 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] [2023-02-14 14:01:46,102 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] [2023-02-14 14:02:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:02:51,903 INFO L93 Difference]: Finished difference Result 3138 states and 3580 transitions. [2023-02-14 14:02:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 14:02:51,904 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 [2023-02-14 14:02:51,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:02:51,913 INFO L225 Difference]: With dead ends: 3138 [2023-02-14 14:02:51,914 INFO L226 Difference]: Without dead ends: 3138 [2023-02-14 14:02:51,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-02-14 14:02:51,914 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1897 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 5914 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.8s 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, 70.7s IncrementalHoareTripleChecker+Time [2023-02-14 14:02:51,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 7826 Invalid, 5932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 5914 Invalid, 2 Unknown, 0 Unchecked, 70.7s Time] [2023-02-14 14:02:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2023-02-14 14:02:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2621. [2023-02-14 14:02:51,954 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) [2023-02-14 14:02:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3487 transitions. [2023-02-14 14:02:51,960 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3487 transitions. Word has length 17 [2023-02-14 14:02:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:02:51,961 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 3487 transitions. [2023-02-14 14:02:51,961 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) [2023-02-14 14:02:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3487 transitions. [2023-02-14 14:02:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 14:02:51,962 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:02:51,962 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:02:52,003 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 [2023-02-14 14:02:52,169 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 [2023-02-14 14:02:52,169 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:02:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:02:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2023-02-14 14:02:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:02:52,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330656140] [2023-02-14 14:02:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:02:52,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 14:02:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:02:52,173 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) [2023-02-14 14:02:52,174 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 [2023-02-14 14:02:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:02:53,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 14:02:53,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:02:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:02:53,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:02:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:02:53,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:02:53,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330656140] [2023-02-14 14:02:53,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330656140] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:02:53,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 14:02:53,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-14 14:02:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889233057] [2023-02-14 14:02:53,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 14:02:53,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 14:02:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:02:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 14:02:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-02-14 14:02:53,290 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) [2023-02-14 14:02:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:02:53,842 INFO L93 Difference]: Finished difference Result 2649 states and 3519 transitions. [2023-02-14 14:02:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-14 14:02:53,849 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 [2023-02-14 14:02:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:02:53,855 INFO L225 Difference]: With dead ends: 2649 [2023-02-14 14:02:53,855 INFO L226 Difference]: Without dead ends: 2633 [2023-02-14 14:02:53,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2023-02-14 14:02:53,856 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 [2023-02-14 14:02:53,856 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] [2023-02-14 14:02:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2023-02-14 14:02:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2023-02-14 14:02:53,881 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) [2023-02-14 14:02:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3497 transitions. [2023-02-14 14:02:53,885 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3497 transitions. Word has length 17 [2023-02-14 14:02:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:02:53,885 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3497 transitions. [2023-02-14 14:02:53,886 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) [2023-02-14 14:02:53,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3497 transitions. [2023-02-14 14:02:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 14:02:53,886 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:02:53,886 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:02:53,907 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 [2023-02-14 14:02:54,101 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 [2023-02-14 14:02:54,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:02:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:02:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2023-02-14 14:02:54,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:02:54,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106711830] [2023-02-14 14:02:54,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:02:54,103 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 [2023-02-14 14:02:54,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:02:54,104 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) [2023-02-14 14:02:54,106 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 [2023-02-14 14:02:57,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 14:02:57,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:02:57,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 14:02:57,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:02:57,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:57,695 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-02-14 14:02:57,695 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 [2023-02-14 14:02:57,738 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2023-02-14 14:02:57,739 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 [2023-02-14 14:02:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:02:58,055 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 [2023-02-14 14:02:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-14 14:02:58,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:02:58,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:02:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106711830] [2023-02-14 14:02:58,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106711830] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:02:58,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:02:58,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:02:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595052753] [2023-02-14 14:02:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:02:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:02:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:02:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:02:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:02:58,123 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) [2023-02-14 14:03:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:03:15,528 INFO L93 Difference]: Finished difference Result 2665 states and 3541 transitions. [2023-02-14 14:03:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:03:15,529 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 [2023-02-14 14:03:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:03:15,536 INFO L225 Difference]: With dead ends: 2665 [2023-02-14 14:03:15,536 INFO L226 Difference]: Without dead ends: 2665 [2023-02-14 14:03:15,536 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 [2023-02-14 14:03:15,536 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 206 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s 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, 17.3s IncrementalHoareTripleChecker+Time [2023-02-14 14:03:15,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 5032 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-02-14 14:03:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2023-02-14 14:03:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2639. [2023-02-14 14:03:15,567 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) [2023-02-14 14:03:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3502 transitions. [2023-02-14 14:03:15,572 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3502 transitions. Word has length 23 [2023-02-14 14:03:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:03:15,572 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 3502 transitions. [2023-02-14 14:03:15,572 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) [2023-02-14 14:03:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3502 transitions. [2023-02-14 14:03:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 14:03:15,574 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:03:15,574 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:03:15,600 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 [2023-02-14 14:03:15,789 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 [2023-02-14 14:03:15,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:03:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:03:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2023-02-14 14:03:15,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:03:15,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127185427] [2023-02-14 14:03:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:03:15,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 14:03:15,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:03:15,792 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) [2023-02-14 14:03:15,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-14 14:03:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:03:16,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 14:03:16,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:03:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:03:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:03:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:03:17,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:03:17,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127185427] [2023-02-14 14:03:17,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127185427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:03:17,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 14:03:17,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-14 14:03:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639548730] [2023-02-14 14:03:17,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 14:03:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 14:03:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:03:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 14:03:17,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-02-14 14:03:17,522 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) [2023-02-14 14:03:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:03:20,064 INFO L93 Difference]: Finished difference Result 2691 states and 3564 transitions. [2023-02-14 14:03:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-14 14:03:20,065 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 [2023-02-14 14:03:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:03:20,072 INFO L225 Difference]: With dead ends: 2691 [2023-02-14 14:03:20,072 INFO L226 Difference]: Without dead ends: 2663 [2023-02-14 14:03:20,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2023-02-14 14:03:20,074 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 26 mSDsluCounter, 32736 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35079 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 14:03:20,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35079 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 14:03:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-02-14 14:03:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2023-02-14 14:03:20,101 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) [2023-02-14 14:03:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3526 transitions. [2023-02-14 14:03:20,106 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3526 transitions. Word has length 25 [2023-02-14 14:03:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:03:20,106 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3526 transitions. [2023-02-14 14:03:20,106 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) [2023-02-14 14:03:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3526 transitions. [2023-02-14 14:03:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 14:03:20,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:03:20,107 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:03:20,131 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 [2023-02-14 14:03:20,325 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 [2023-02-14 14:03:20,325 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:03:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:03:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2023-02-14 14:03:20,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:03:20,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042871938] [2023-02-14 14:03:20,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:03:20,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 14:03:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:03:20,329 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) [2023-02-14 14:03:20,343 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 [2023-02-14 14:03:23,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 14:03:23,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:03:23,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-14 14:03:23,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:03:23,769 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-14 14:03:23,770 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 [2023-02-14 14:03:26,249 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2023-02-14 14:03:26,250 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 [2023-02-14 14:03:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-02-14 14:03:26,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:03:26,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:03:26,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042871938] [2023-02-14 14:03:26,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042871938] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:03:26,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:03:26,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:03:26,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986331746] [2023-02-14 14:03:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:03:26,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 14:03:26,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:03:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:03:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:03:26,537 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) [2023-02-14 14:03:39,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:03:39,564 INFO L93 Difference]: Finished difference Result 3174 states and 3613 transitions. [2023-02-14 14:03:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:03:39,565 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 [2023-02-14 14:03:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:03:39,572 INFO L225 Difference]: With dead ends: 3174 [2023-02-14 14:03:39,572 INFO L226 Difference]: Without dead ends: 3174 [2023-02-14 14:03:39,572 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 [2023-02-14 14:03:39,573 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1831 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s 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, 12.9s IncrementalHoareTripleChecker+Time [2023-02-14 14:03:39,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3600 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-02-14 14:03:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2023-02-14 14:03:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2660. [2023-02-14 14:03:39,608 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) [2023-02-14 14:03:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3520 transitions. [2023-02-14 14:03:39,613 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3520 transitions. Word has length 37 [2023-02-14 14:03:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:03:39,614 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 3520 transitions. [2023-02-14 14:03:39,615 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) [2023-02-14 14:03:39,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3520 transitions. [2023-02-14 14:03:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-14 14:03:39,616 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:03:39,617 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:03:39,641 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 [2023-02-14 14:03:39,833 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 [2023-02-14 14:03:39,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:03:39,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:03:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2023-02-14 14:03:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:03:39,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826960576] [2023-02-14 14:03:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:03:39,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 14:03:39,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:03:39,837 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) [2023-02-14 14:03:39,839 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 [2023-02-14 14:03:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:03:40,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-14 14:03:40,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:03:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:03:41,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:03:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:03:43,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:03:43,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826960576] [2023-02-14 14:03:43,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826960576] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:03:43,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 14:03:43,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-02-14 14:03:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123140379] [2023-02-14 14:03:43,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 14:03:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-14 14:03:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:03:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-14 14:03:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2023-02-14 14:03:43,074 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) [2023-02-14 14:03:51,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:03:51,916 INFO L93 Difference]: Finished difference Result 2760 states and 3642 transitions. [2023-02-14 14:03:51,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-02-14 14:03:51,916 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 [2023-02-14 14:03:51,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:03:51,921 INFO L225 Difference]: With dead ends: 2760 [2023-02-14 14:03:51,921 INFO L226 Difference]: Without dead ends: 2708 [2023-02-14 14:03:51,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2023-02-14 14:03:51,924 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 70 mSDsluCounter, 53882 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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 [2023-02-14 14:03:51,924 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] [2023-02-14 14:03:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2023-02-14 14:03:51,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2023-02-14 14:03:51,947 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) [2023-02-14 14:03:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3568 transitions. [2023-02-14 14:03:51,951 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3568 transitions. Word has length 37 [2023-02-14 14:03:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:03:51,951 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3568 transitions. [2023-02-14 14:03:51,951 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) [2023-02-14 14:03:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3568 transitions. [2023-02-14 14:03:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-14 14:03:51,952 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:03:51,952 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:03:51,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-14 14:03:52,164 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 [2023-02-14 14:03:52,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:03:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:03:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2023-02-14 14:03:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:03:52,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173805773] [2023-02-14 14:03:52,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:03:52,167 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 [2023-02-14 14:03:52,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:03:52,168 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) [2023-02-14 14:03:52,170 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 [2023-02-14 14:03:55,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 14:03:55,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:03:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-14 14:03:55,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:03:55,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:03:55,979 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 [2023-02-14 14:03:56,173 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2023-02-14 14:03:56,173 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 [2023-02-14 14:04:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 14:04:00,470 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 [2023-02-14 14:04:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-02-14 14:04:00,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:04:00,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:04:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173805773] [2023-02-14 14:04:00,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173805773] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:04:00,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:04:00,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:04:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535885751] [2023-02-14 14:04:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:04:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:04:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:04:00,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:04:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:04:00,512 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) [2023-02-14 14:04:15,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 14:04:18,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 14:04:21,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 14:04:24,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-14 14:04:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:04:32,230 INFO L93 Difference]: Finished difference Result 4545 states and 5200 transitions. [2023-02-14 14:04:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 14:04:32,231 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 [2023-02-14 14:04:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:04:32,237 INFO L225 Difference]: With dead ends: 4545 [2023-02-14 14:04:32,237 INFO L226 Difference]: Without dead ends: 4545 [2023-02-14 14:04:32,237 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 [2023-02-14 14:04:32,238 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 3815 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4108 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s 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, 31.5s IncrementalHoareTripleChecker+Time [2023-02-14 14:04:32,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3815 Valid, 3113 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4108 Invalid, 0 Unknown, 0 Unchecked, 31.5s Time] [2023-02-14 14:04:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2023-02-14 14:04:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 3424. [2023-02-14 14:04:32,281 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) [2023-02-14 14:04:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4997 transitions. [2023-02-14 14:04:32,288 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4997 transitions. Word has length 61 [2023-02-14 14:04:32,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:04:32,288 INFO L495 AbstractCegarLoop]: Abstraction has 3424 states and 4997 transitions. [2023-02-14 14:04:32,289 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) [2023-02-14 14:04:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4997 transitions. [2023-02-14 14:04:32,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-14 14:04:32,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:04:32,290 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:04:32,313 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 [2023-02-14 14:04:32,505 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 [2023-02-14 14:04:32,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2023-02-14 14:04:32,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:04:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2023-02-14 14:04:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 14:04:32,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743514104] [2023-02-14 14:04:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:04:32,507 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 [2023-02-14 14:04:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 14:04:32,508 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) [2023-02-14 14:04:32,511 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 [2023-02-14 14:04:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:04:33,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-14 14:04:33,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:04:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:04:35,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:04:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:04:42,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 14:04:42,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743514104] [2023-02-14 14:04:42,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743514104] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:04:42,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 14:04:42,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2023-02-14 14:04:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285944484] [2023-02-14 14:04:42,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 14:04:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-14 14:04:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 14:04:42,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-14 14:04:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2023-02-14 14:04:42,348 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)