./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 eb692b52 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-?-eb692b5 [2022-07-20 06:31:17,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:31:17,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:31:17,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:31:17,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:31:17,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:31:17,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:31:17,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:31:17,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:31:17,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:31:17,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:31:17,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:31:17,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:31:17,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:31:17,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:31:17,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:31:17,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:31:17,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:31:17,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:31:17,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:31:17,987 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:31:17,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:31:17,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:31:17,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:31:17,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:31:17,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:31:17,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:31:17,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:31:17,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:31:17,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:31:17,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:31:17,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:31:18,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:31:18,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:31:18,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:31:18,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:31:18,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:31:18,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:31:18,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:31:18,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:31:18,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:31:18,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:31:18,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:31:18,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:31:18,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:31:18,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:31:18,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:31:18,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:31:18,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:31:18,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:31:18,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:31:18,037 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:31:18,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:31:18,038 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:31:18,038 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:31:18,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:31:18,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:31:18,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:31:18,039 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:31:18,039 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:31:18,039 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:31:18,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:31:18,040 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:31:18,040 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:31:18,040 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:31:18,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:31:18,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:31:18,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:31:18,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:31:18,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:31:18,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:31:18,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:31:18,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:31:18,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-07-20 06:31:18,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:31:18,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:31:18,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:31:18,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:31:18,245 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:31:18,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-07-20 06:31:18,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8095f110e/d64faced10bc4ce0b73e73388f1c951d/FLAGf264387ba [2022-07-20 06:31:18,842 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:31:18,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-07-20 06:31:18,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8095f110e/d64faced10bc4ce0b73e73388f1c951d/FLAGf264387ba [2022-07-20 06:31:19,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8095f110e/d64faced10bc4ce0b73e73388f1c951d [2022-07-20 06:31:19,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:31:19,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:31:19,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:31:19,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:31:19,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:31:19,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:31:19" (1/1) ... [2022-07-20 06:31:19,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f2c378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:19, skipping insertion in model container [2022-07-20 06:31:19,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:31:19" (1/1) ... [2022-07-20 06:31:19,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:31:19,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:31:19,565 WARN L230 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] [2022-07-20 06:31:19,617 WARN L570 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-07-20 06:31:19,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:31:19,946 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) [2022-07-20 06:31:19,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19e7fbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:19, skipping insertion in model container [2022-07-20 06:31:19,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:31:19,947 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-20 06:31:19,949 INFO L158 Benchmark]: Toolchain (without parser) took 888.53ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 76.8MB in the beginning and 88.6MB in the end (delta: -11.8MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2022-07-20 06:31:19,950 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 71.0MB in the beginning and 70.9MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:31:19,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 885.79ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 76.8MB in the beginning and 88.6MB in the end (delta: -11.8MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2022-07-20 06:31:19,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 71.0MB in the beginning and 70.9MB in the end (delta: 45.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 885.79ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 76.8MB in the beginning and 88.6MB in the end (delta: -11.8MB). Peak memory consumption was 44.9MB. 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-?-eb692b5 [2022-07-20 06:31:21,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:31:21,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:31:21,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:31:21,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:31:21,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:31:21,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:31:21,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:31:21,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:31:21,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:31:21,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:31:21,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:31:21,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:31:21,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:31:21,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:31:21,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:31:21,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:31:21,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:31:21,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:31:21,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:31:21,743 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:31:21,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:31:21,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:31:21,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:31:21,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:31:21,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:31:21,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:31:21,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:31:21,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:31:21,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:31:21,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:31:21,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:31:21,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:31:21,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:31:21,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:31:21,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:31:21,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:31:21,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:31:21,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:31:21,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:31:21,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:31:21,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:31:21,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 06:31:21,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:31:21,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:31:21,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:31:21,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:31:21,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:31:21,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:31:21,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:31:21,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:31:21,803 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:31:21,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:31:21,803 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 06:31:21,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:31:21,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:31:21,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 06:31:21,805 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 06:31:21,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 06:31:21,806 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-07-20 06:31:22,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:31:22,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:31:22,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:31:22,130 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:31:22,131 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:31:22,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-07-20 06:31:22,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1881c42e4/4d66520fbc744a60b1685c48beac5c79/FLAGe6d04a9a8 [2022-07-20 06:31:22,875 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:31:22,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-07-20 06:31:22,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1881c42e4/4d66520fbc744a60b1685c48beac5c79/FLAGe6d04a9a8 [2022-07-20 06:31:23,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1881c42e4/4d66520fbc744a60b1685c48beac5c79 [2022-07-20 06:31:23,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:31:23,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:31:23,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:31:23,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:31:23,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:31:23,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:31:23" (1/1) ... [2022-07-20 06:31:23,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c6d649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:23, skipping insertion in model container [2022-07-20 06:31:23,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:31:23" (1/1) ... [2022-07-20 06:31:23,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:31:23,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:31:23,821 WARN L230 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] [2022-07-20 06:31:24,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:31:24,276 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 06:31:24,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:31:24,406 WARN L230 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] [2022-07-20 06:31:24,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:31:24,606 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:31:24,650 WARN L230 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] [2022-07-20 06:31:24,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:31:24,894 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:31:24,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24 WrapperNode [2022-07-20 06:31:24,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:31:24,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:31:24,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:31:24,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:31:24,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:24,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,095 INFO L137 Inliner]: procedures = 142, calls = 2887, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3022 [2022-07-20 06:31:25,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:31:25,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:31:25,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:31:25,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:31:25,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:31:25,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:31:25,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:31:25,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:31:25,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (1/1) ... [2022-07-20 06:31:25,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:31:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:31:25,304 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) [2022-07-20 06:31:25,344 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 [2022-07-20 06:31:25,384 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-07-20 06:31:25,385 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-07-20 06:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 06:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 06:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 06:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 06:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 06:31:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-20 06:31:25,386 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-20 06:31:25,386 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-20 06:31:25,386 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-20 06:31:25,386 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-07-20 06:31:25,386 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-07-20 06:31:25,386 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-07-20 06:31:25,387 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-07-20 06:31:25,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-20 06:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-07-20 06:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 06:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-20 06:31:25,388 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-20 06:31:25,388 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-07-20 06:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-07-20 06:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-07-20 06:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-07-20 06:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-07-20 06:31:25,389 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-07-20 06:31:25,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-07-20 06:31:25,390 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 06:31:25,390 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-20 06:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-20 06:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-20 06:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-20 06:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 06:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-07-20 06:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-07-20 06:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-07-20 06:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-07-20 06:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-07-20 06:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-07-20 06:31:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:31:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:31:25,820 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:31:25,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:31:25,890 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:25,897 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-20 06:31:25,897 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-20 06:31:25,901 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:26,250 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-07-20 06:31:26,251 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-07-20 06:31:26,288 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:26,301 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-20 06:31:26,301 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-20 06:31:26,306 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,472 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,486 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,523 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-07-20 06:31:28,523 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-07-20 06:31:28,526 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,526 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,527 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-07-20 06:31:28,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-07-20 06:31:28,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-07-20 06:31:28,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-07-20 06:31:28,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-07-20 06:31:28,862 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-07-20 06:31:28,865 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,877 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:28,880 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,721 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-07-20 06:31:32,721 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-07-20 06:31:32,721 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-07-20 06:31:32,721 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-07-20 06:31:32,721 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2022-07-20 06:31:32,721 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2022-07-20 06:31:32,858 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,948 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-20 06:31:32,948 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-20 06:31:32,955 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,956 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,958 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,969 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,970 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,974 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,976 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:32,987 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 06:31:36,216 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2022-07-20 06:31:36,216 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2022-07-20 06:31:36,217 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2022-07-20 06:31:36,226 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:31:36,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:31:36,237 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-20 06:31:36,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:31:36 BoogieIcfgContainer [2022-07-20 06:31:36,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:31:36,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:31:36,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:31:36,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:31:36,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:31:23" (1/3) ... [2022-07-20 06:31:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303875cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:31:36, skipping insertion in model container [2022-07-20 06:31:36,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:31:24" (2/3) ... [2022-07-20 06:31:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303875cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:31:36, skipping insertion in model container [2022-07-20 06:31:36,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:31:36" (3/3) ... [2022-07-20 06:31:36,245 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-07-20 06:31:36,254 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:31:36,254 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2022-07-20 06:31:36,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:31:36,301 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f1a817e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c47efd [2022-07-20 06:31:36,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2022-07-20 06:31:36,306 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) [2022-07-20 06:31:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-20 06:31:36,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:31:36,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-20 06:31:36,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:31:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:31:36,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2022-07-20 06:31:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:31:36,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931398168] [2022-07-20 06:31:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:31:36,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:31:36,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:31:36,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:31:36,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 06:31:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:31:37,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-20 06:31:37,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:31:38,068 INFO L356 Elim1Store]: treesize reduction 152, result has 17.8 percent of original size [2022-07-20 06:31:38,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 38 [2022-07-20 06:31:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:31:38,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:31:38,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:31:38,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931398168] [2022-07-20 06:31:38,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931398168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:31:38,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:31:38,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:31:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937257504] [2022-07-20 06:31:38,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:31:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:31:38,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:31:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:31:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:31:38,152 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) [2022-07-20 06:31:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:31:41,086 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2022-07-20 06:31:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:31:41,088 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 [2022-07-20 06:31:41,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:31:41,108 INFO L225 Difference]: With dead ends: 2077 [2022-07-20 06:31:41,108 INFO L226 Difference]: Without dead ends: 2075 [2022-07-20 06:31:41,109 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 [2022-07-20 06:31:41,118 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 06:31:41,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 06:31:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-07-20 06:31:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2022-07-20 06:31:41,211 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) [2022-07-20 06:31:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2022-07-20 06:31:41,221 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2022-07-20 06:31:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:31:41,222 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2022-07-20 06:31:41,222 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) [2022-07-20 06:31:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2022-07-20 06:31:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-20 06:31:41,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:31:41,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-20 06:31:41,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 06:31:41,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:31:41,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:31:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:31:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2022-07-20 06:31:41,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:31:41,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995252797] [2022-07-20 06:31:41,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:31:41,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:31:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:31:41,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:31:41,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 06:31:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:31:43,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 06:31:43,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:31:43,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:31:43,220 INFO L356 Elim1Store]: treesize reduction 120, result has 27.7 percent of original size [2022-07-20 06:31:43,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 56 [2022-07-20 06:31:43,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1122 treesize of output 1106 [2022-07-20 06:31:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:31:43,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:31:43,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:31:43,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995252797] [2022-07-20 06:31:43,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995252797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:31:43,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:31:43,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 06:31:43,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761402950] [2022-07-20 06:31:43,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:31:43,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:31:43,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:31:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:31:43,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:31:43,460 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) [2022-07-20 06:31:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:31:47,121 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2022-07-20 06:31:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:31:47,122 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 [2022-07-20 06:31:47,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:31:47,128 INFO L225 Difference]: With dead ends: 2073 [2022-07-20 06:31:47,128 INFO L226 Difference]: Without dead ends: 2073 [2022-07-20 06:31:47,128 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 [2022-07-20 06:31:47,132 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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 [2022-07-20 06:31:47,132 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] [2022-07-20 06:31:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-07-20 06:31:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2022-07-20 06:31:47,168 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) [2022-07-20 06:31:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2022-07-20 06:31:47,182 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2022-07-20 06:31:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:31:47,182 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2022-07-20 06:31:47,183 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) [2022-07-20 06:31:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2022-07-20 06:31:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-20 06:31:47,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:31:47,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-20 06:31:47,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 06:31:47,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:31:47,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:31:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:31:47,399 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2022-07-20 06:31:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:31:47,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130042717] [2022-07-20 06:31:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:31:47,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:31:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:31:47,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:31:47,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 06:31:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:31:48,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 06:31:48,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:31:48,358 INFO L356 Elim1Store]: treesize reduction 118, result has 36.2 percent of original size [2022-07-20 06:31:48,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 [2022-07-20 06:31:48,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:31:48,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 12 [2022-07-20 06:31:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:31:48,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:31:48,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:31:48,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130042717] [2022-07-20 06:31:48,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130042717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:31:48,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:31:48,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:31:48,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832354135] [2022-07-20 06:31:48,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:31:48,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:31:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:31:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:31:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:31:48,432 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) [2022-07-20 06:31:52,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 06:31:57,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 06:31:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:31:57,163 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2022-07-20 06:31:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:31:57,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-20 06:31:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:31:57,173 INFO L225 Difference]: With dead ends: 2072 [2022-07-20 06:31:57,173 INFO L226 Difference]: Without dead ends: 2072 [2022-07-20 06:31:57,173 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 [2022-07-20 06:31:57,176 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s 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, 8.6s IncrementalHoareTripleChecker+Time [2022-07-20 06:31:57,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-07-20 06:31:57,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-07-20 06:31:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-07-20 06:31:57,206 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) [2022-07-20 06:31:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-07-20 06:31:57,213 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2022-07-20 06:31:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:31:57,213 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-07-20 06:31:57,213 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) [2022-07-20 06:31:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-07-20 06:31:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-20 06:31:57,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:31:57,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-20 06:31:57,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 06:31:57,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:31:57,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:31:57,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:31:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2022-07-20 06:31:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:31:57,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226339668] [2022-07-20 06:31:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:31:57,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:31:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:31:57,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:31:57,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 06:31:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:31:58,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 06:31:58,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:31:58,408 INFO L356 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2022-07-20 06:31:58,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:31:58,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:31:58,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:31:58,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:31:58,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-20 06:31:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:31:58,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:31:58,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:31:58,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226339668] [2022-07-20 06:31:58,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226339668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:31:58,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:31:58,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:31:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168207988] [2022-07-20 06:31:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:31:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 06:31:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:31:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 06:31:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 06:31:58,555 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) [2022-07-20 06:32:03,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 06:32:10,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 06:32:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:11,025 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2022-07-20 06:32:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 06:32:11,026 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 [2022-07-20 06:32:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:11,031 INFO L225 Difference]: With dead ends: 2071 [2022-07-20 06:32:11,032 INFO L226 Difference]: Without dead ends: 2071 [2022-07-20 06:32:11,033 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 [2022-07-20 06:32:11,035 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:11,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-07-20 06:32:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-07-20 06:32:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2022-07-20 06:32:11,063 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) [2022-07-20 06:32:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2022-07-20 06:32:11,070 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2022-07-20 06:32:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:11,071 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2022-07-20 06:32:11,072 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) [2022-07-20 06:32:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2022-07-20 06:32:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-20 06:32:11,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:11,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:11,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 06:32:11,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:32:11,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:32:11,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2022-07-20 06:32:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:32:11,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115700796] [2022-07-20 06:32:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:11,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:32:11,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:32:11,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:32:11,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 06:32:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:12,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 06:32:12,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:32:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:12,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:32:12,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:32:12,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115700796] [2022-07-20 06:32:12,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115700796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:32:12,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:32:12,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 06:32:12,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734623827] [2022-07-20 06:32:12,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:32:12,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 06:32:12,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:32:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 06:32:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 06:32:12,108 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) [2022-07-20 06:32:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:12,222 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2022-07-20 06:32:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 06:32:12,222 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 [2022-07-20 06:32:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:12,229 INFO L225 Difference]: With dead ends: 2074 [2022-07-20 06:32:12,229 INFO L226 Difference]: Without dead ends: 2072 [2022-07-20 06:32:12,230 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 [2022-07-20 06:32:12,230 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 [2022-07-20 06:32:12,231 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] [2022-07-20 06:32:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-07-20 06:32:12,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-07-20 06:32:12,262 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) [2022-07-20 06:32:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-07-20 06:32:12,270 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2022-07-20 06:32:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:12,270 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-07-20 06:32:12,271 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) [2022-07-20 06:32:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-07-20 06:32:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 06:32:12,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:12,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:12,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 06:32:12,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:32:12,491 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:32:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2022-07-20 06:32:12,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:32:12,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737340200] [2022-07-20 06:32:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:32:12,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:32:12,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:32:12,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:32:12,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 06:32:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:32:13,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 06:32:13,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:32:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:13,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 06:32:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:32:13,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:32:13,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737340200] [2022-07-20 06:32:13,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737340200] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 06:32:13,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 06:32:13,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-20 06:32:13,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816176906] [2022-07-20 06:32:13,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 06:32:13,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 06:32:13,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:32:13,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 06:32:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-20 06:32:13,572 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) [2022-07-20 06:32:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:32:13,853 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2022-07-20 06:32:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 06:32:13,854 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 [2022-07-20 06:32:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:32:13,859 INFO L225 Difference]: With dead ends: 2084 [2022-07-20 06:32:13,859 INFO L226 Difference]: Without dead ends: 2082 [2022-07-20 06:32:13,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-20 06:32:13,861 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 11 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:32:13,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9352 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:32:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-07-20 06:32:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2022-07-20 06:32:13,889 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) [2022-07-20 06:32:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2022-07-20 06:32:13,894 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2022-07-20 06:32:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:32:13,894 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2022-07-20 06:32:13,894 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) [2022-07-20 06:32:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2022-07-20 06:32:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 06:32:13,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:32:13,895 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:32:13,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 06:32:14,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:32:14,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-07-20 06:32:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:32:14,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2022-07-20 06:32:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:32:14,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492172228] [2022-07-20 06:32:14,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 06:32:14,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:32:14,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:32:14,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:32:14,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 06:32:16,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 06:32:16,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 06:32:16,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-20 06:32:16,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:32:16,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 06:32:16,443 INFO L356 Elim1Store]: treesize reduction 142, result has 24.1 percent of original size [2022-07-20 06:32:16,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 85