./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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-2.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 1ee6b6d5bc7cebdd9c452f4083e9e0b3d414ca737630250ef206af8fd5ee01ae --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:01,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:01,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:01,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:01,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:01,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:01,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:01,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:01,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:01,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:01,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:01,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:01,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:01,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:01,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:01,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:01,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:01,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:01,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:01,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:01,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:01,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:01,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:01,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:01,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:01,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:01,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:01,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:01,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:01,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:01,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:01,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:01,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:01,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:01,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:01,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:01,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:01,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:01,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:01,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:01,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:01,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:07:01,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:01,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:01,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:01,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:01,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:01,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:01,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:01,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:01,880 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:01,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:01,881 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:01,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:01,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:01,882 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:01,883 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:01,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:01,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:01,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:01,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:01,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:01,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:01,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:07:01,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:07:01,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:01,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ee6b6d5bc7cebdd9c452f4083e9e0b3d414ca737630250ef206af8fd5ee01ae [2021-12-15 14:07:02,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:02,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:02,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:02,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:02,103 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:02,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-2.c [2021-12-15 14:07:02,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7cd8309c/daa65ee7d39b48878e37a23844cb4a3e/FLAG560039534 [2021-12-15 14:07:02,730 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:02,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-2.c [2021-12-15 14:07:02,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7cd8309c/daa65ee7d39b48878e37a23844cb4a3e/FLAG560039534 [2021-12-15 14:07:03,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7cd8309c/daa65ee7d39b48878e37a23844cb4a3e [2021-12-15 14:07:03,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:03,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:03,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:03,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:03,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:03,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:03" (1/1) ... [2021-12-15 14:07:03,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6892848f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:03, skipping insertion in model container [2021-12-15 14:07:03,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:03" (1/1) ... [2021-12-15 14:07:03,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:03,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:03,681 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-2.c[76891,76904] [2021-12-15 14:07:03,745 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-12-15 14:07:04,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:04,089 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-15 14:07:04,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cb4d385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:04, skipping insertion in model container [2021-12-15 14:07:04,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:04,090 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 14:07:04,091 INFO L158 Benchmark]: Toolchain (without parser) took 959.40ms. Allocated memory is still 130.0MB. Free memory was 93.7MB in the beginning and 86.6MB in the end (delta: 7.2MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2021-12-15 14:07:04,091 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:04,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.95ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 86.6MB in the end (delta: 6.8MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2021-12-15 14:07:04,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 50.5MB in the beginning and 50.5MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.95ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 86.6MB in the end (delta: 6.8MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2234]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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-2.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 1ee6b6d5bc7cebdd9c452f4083e9e0b3d414ca737630250ef206af8fd5ee01ae --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:07:05,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:07:05,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:07:05,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:07:05,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:07:05,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:07:05,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:07:05,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:07:05,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:07:05,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:07:05,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:07:05,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:07:05,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:07:05,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:07:05,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:07:05,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:07:05,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:07:05,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:07:05,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:07:05,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:07:05,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:07:05,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:07:05,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:07:05,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:07:05,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:07:05,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:07:05,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:07:05,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:07:05,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:07:05,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:07:05,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:07:05,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:07:05,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:07:05,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:07:05,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:07:05,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:07:05,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:07:05,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:07:05,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:07:05,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:07:05,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:07:05,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:07:05,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:07:05,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:07:05,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:07:05,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:07:05,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:07:05,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:07:05,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:07:05,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:07:05,794 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:07:05,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:07:05,795 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:07:05,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:07:05,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:07:05,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:07:05,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:07:05,796 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:07:05,796 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:07:05,796 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:07:05,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:07:05,796 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:07:05,797 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:07:05,797 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:07:05,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:07:05,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:07:05,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:07:05,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:07:05,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:07:05,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:05,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:07:05,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:07:05,799 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:07:05,799 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:07:05,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:07:05,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:07:05,799 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ee6b6d5bc7cebdd9c452f4083e9e0b3d414ca737630250ef206af8fd5ee01ae [2021-12-15 14:07:06,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:07:06,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:07:06,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:07:06,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:07:06,093 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:07:06,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-2.c [2021-12-15 14:07:06,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21fbc60d6/d76253ed8f5b446ba2e3ef61a4110955/FLAG20c83a377 [2021-12-15 14:07:06,716 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:07:06,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-2.c [2021-12-15 14:07:06,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21fbc60d6/d76253ed8f5b446ba2e3ef61a4110955/FLAG20c83a377 [2021-12-15 14:07:07,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21fbc60d6/d76253ed8f5b446ba2e3ef61a4110955 [2021-12-15 14:07:07,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:07:07,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:07:07,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:07,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:07:07,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:07:07,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:07" (1/1) ... [2021-12-15 14:07:07,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bec623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:07, skipping insertion in model container [2021-12-15 14:07:07,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:07:07" (1/1) ... [2021-12-15 14:07:07,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:07:07,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:07,699 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-2.c[76891,76904] [2021-12-15 14:07:08,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:08,107 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 14:07:08,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:07:08,185 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-2.c[76891,76904] [2021-12-15 14:07:08,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:08,399 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:07:08,453 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-2.c[76891,76904] [2021-12-15 14:07:08,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:07:08,670 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:07:08,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08 WrapperNode [2021-12-15 14:07:08,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:07:08,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:08,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:07:08,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:07:08,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,885 INFO L137 Inliner]: procedures = 140, calls = 2853, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 2952 [2021-12-15 14:07:08,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:07:08,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:07:08,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:07:08,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:07:08,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:08,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:09,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:09,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:09,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:07:09,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:07:09,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:07:09,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:07:09,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (1/1) ... [2021-12-15 14:07:09,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:07:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:07:09,060 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) [2021-12-15 14:07:09,061 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 [2021-12-15 14:07:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2021-12-15 14:07:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-15 14:07:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-15 14:07:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-15 14:07:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-15 14:07:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-15 14:07:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-15 14:07:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-15 14:07:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2021-12-15 14:07:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2021-12-15 14:07:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-15 14:07:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-15 14:07:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-15 14:07:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-15 14:07:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-15 14:07:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2021-12-15 14:07:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2021-12-15 14:07:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-15 14:07:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 14:07:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 14:07:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-15 14:07:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-15 14:07:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-15 14:07:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-15 14:07:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2021-12-15 14:07:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2021-12-15 14:07:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:07:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2021-12-15 14:07:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2021-12-15 14:07:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2021-12-15 14:07:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2021-12-15 14:07:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 14:07:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:07:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-15 14:07:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-15 14:07:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-15 14:07:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-15 14:07:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-15 14:07:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:07:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2021-12-15 14:07:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2021-12-15 14:07:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 14:07:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-15 14:07:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:07:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 14:07:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-15 14:07:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:07:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 14:07:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-15 14:07:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-15 14:07:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-15 14:07:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2021-12-15 14:07:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2021-12-15 14:07:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-12-15 14:07:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-12-15 14:07:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:07:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:07:09,466 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:07:09,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:07:09,501 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,518 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-15 14:07:09,519 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-15 14:07:09,523 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,858 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-15 14:07:09,858 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-15 14:07:09,889 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,898 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-15 14:07:09,898 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-15 14:07:09,918 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:09,928 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,007 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,053 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-12-15 14:07:12,053 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-12-15 14:07:12,054 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,054 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,055 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-15 14:07:12,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-15 14:07:12,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-15 14:07:12,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-15 14:07:12,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-15 14:07:12,385 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-15 14:07:12,387 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,393 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:12,394 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,262 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-12-15 14:07:14,262 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-12-15 14:07:14,262 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-15 14:07:14,262 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-15 14:07:14,263 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2021-12-15 14:07:14,263 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2021-12-15 14:07:14,402 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,495 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-15 14:07:14,495 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-15 14:07:14,502 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,503 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,505 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,514 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,516 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,522 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,524 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:14,525 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 14:07:17,352 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2021-12-15 14:07:17,352 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2021-12-15 14:07:17,352 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2021-12-15 14:07:17,352 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2021-12-15 14:07:17,352 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2021-12-15 14:07:17,353 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2021-12-15 14:07:17,354 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2021-12-15 14:07:17,354 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2021-12-15 14:07:17,366 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 14:07:17,383 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 14:07:17,384 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-15 14:07:17,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:17 BoogieIcfgContainer [2021-12-15 14:07:17,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 14:07:17,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 14:07:17,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 14:07:17,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 14:07:17,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 02:07:07" (1/3) ... [2021-12-15 14:07:17,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5bf0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:17, skipping insertion in model container [2021-12-15 14:07:17,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:07:08" (2/3) ... [2021-12-15 14:07:17,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5bf0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 02:07:17, skipping insertion in model container [2021-12-15 14:07:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 02:07:17" (3/3) ... [2021-12-15 14:07:17,397 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-2.c [2021-12-15 14:07:17,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 14:07:17,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 920 error locations. [2021-12-15 14:07:17,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 14:07:17,452 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 14:07:17,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 920 error locations. [2021-12-15 14:07:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 2002 states, 981 states have (on average 2.1600407747196737) internal successors, (2119), 1925 states have internal predecessors, (2119), 89 states have call successors, (89), 19 states have call predecessors, (89), 19 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-15 14:07:17,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 14:07:17,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:17,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 14:07:17,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 917 more)] === [2021-12-15 14:07:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash 50888005, now seen corresponding path program 1 times [2021-12-15 14:07:17,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:17,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251796974] [2021-12-15 14:07:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:17,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:17,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:17,518 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) [2021-12-15 14:07:17,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 14:07:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:19,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 14:07:19,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:19,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:07:19,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:07:19,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 14:07:19,279 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-12-15 14:07:19,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 130 treesize of output 140 [2021-12-15 14:07:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:19,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:19,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:19,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251796974] [2021-12-15 14:07:19,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251796974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:19,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:19,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:19,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014821484] [2021-12-15 14:07:19,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:19,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:07:19,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:19,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:07:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:07:19,737 INFO L87 Difference]: Start difference. First operand has 2002 states, 981 states have (on average 2.1600407747196737) internal successors, (2119), 1925 states have internal predecessors, (2119), 89 states have call successors, (89), 19 states have call predecessors, (89), 19 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-15 14:07:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:19,877 INFO L93 Difference]: Finished difference Result 1999 states and 2263 transitions. [2021-12-15 14:07:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:07:19,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-12-15 14:07:19,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:19,895 INFO L225 Difference]: With dead ends: 1999 [2021-12-15 14:07:19,896 INFO L226 Difference]: Without dead ends: 1997 [2021-12-15 14:07:19,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:07:19,899 INFO L933 BasicCegarLoop]: 2260 mSDtfsCounter, 0 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4903 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1879 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:19,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4903 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1879 Unchecked, 0.0s Time] [2021-12-15 14:07:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2021-12-15 14:07:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1997. [2021-12-15 14:07:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 979 states have (on average 2.1511746680286006) internal successors, (2106), 1920 states have internal predecessors, (2106), 89 states have call successors, (89), 19 states have call predecessors, (89), 18 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-15 14:07:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2261 transitions. [2021-12-15 14:07:19,972 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2261 transitions. Word has length 4 [2021-12-15 14:07:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:19,973 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 2261 transitions. [2021-12-15 14:07:19,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-15 14:07:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2261 transitions. [2021-12-15 14:07:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 14:07:19,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:19,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 14:07:20,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:20,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:20,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 917 more)] === [2021-12-15 14:07:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash 50888006, now seen corresponding path program 1 times [2021-12-15 14:07:20,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:20,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531092872] [2021-12-15 14:07:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:20,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:20,192 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) [2021-12-15 14:07:20,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 14:07:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:21,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-15 14:07:21,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:21,956 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-15 14:07:21,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 215 [2021-12-15 14:07:21,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:07:21,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:07:21,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:07:21,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 14:07:22,033 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-15 14:07:22,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2021-12-15 14:07:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:22,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:22,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:22,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531092872] [2021-12-15 14:07:22,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531092872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:22,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:22,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 14:07:22,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027720246] [2021-12-15 14:07:22,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:22,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 14:07:22,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:22,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 14:07:22,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:07:22,389 INFO L87 Difference]: Start difference. First operand 1997 states and 2261 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-15 14:07:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 14:07:22,422 INFO L93 Difference]: Finished difference Result 1996 states and 2260 transitions. [2021-12-15 14:07:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 14:07:22,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2021-12-15 14:07:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 14:07:22,431 INFO L225 Difference]: With dead ends: 1996 [2021-12-15 14:07:22,432 INFO L226 Difference]: Without dead ends: 1996 [2021-12-15 14:07:22,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 14:07:22,433 INFO L933 BasicCegarLoop]: 2258 mSDtfsCounter, 0 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4938 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1837 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:22,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4938 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1837 Unchecked, 0.0s Time] [2021-12-15 14:07:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-12-15 14:07:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1996. [2021-12-15 14:07:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 979 states have (on average 2.1501532175689477) internal successors, (2105), 1919 states have internal predecessors, (2105), 89 states have call successors, (89), 19 states have call predecessors, (89), 18 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-15 14:07:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2260 transitions. [2021-12-15 14:07:22,464 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2260 transitions. Word has length 4 [2021-12-15 14:07:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 14:07:22,464 INFO L470 AbstractCegarLoop]: Abstraction has 1996 states and 2260 transitions. [2021-12-15 14:07:22,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2021-12-15 14:07:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2260 transitions. [2021-12-15 14:07:22,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 14:07:22,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 14:07:22,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 14:07:22,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 14:07:22,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:22,680 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 917 more)] === [2021-12-15 14:07:22,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 14:07:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1577529756, now seen corresponding path program 1 times [2021-12-15 14:07:22,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 14:07:22,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433300487] [2021-12-15 14:07:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 14:07:22,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 14:07:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 14:07:22,684 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) [2021-12-15 14:07:22,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 14:07:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 14:07:23,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 14:07:23,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 14:07:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 14:07:23,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 14:07:23,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 14:07:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433300487] [2021-12-15 14:07:23,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433300487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 14:07:23,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 14:07:23,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 14:07:23,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202796873] [2021-12-15 14:07:23,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 14:07:23,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 14:07:23,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 14:07:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 14:07:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:23,555 INFO L87 Difference]: Start difference. First operand 1996 states and 2260 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-15 14:07:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 14:07:24,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 14:07:24,190 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 234 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-15 14:07:24,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 388 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-15 14:07:24,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-15 14:07:24,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 14:07:24,396 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:07:24,398 INFO L158 Benchmark]: Toolchain (without parser) took 17224.08ms. Allocated memory was 62.9MB in the beginning and 398.5MB in the end (delta: 335.5MB). Free memory was 38.7MB in the beginning and 171.6MB in the end (delta: -132.9MB). Peak memory consumption was 202.2MB. Max. memory is 16.1GB. [2021-12-15 14:07:24,398 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 30.1MB in the beginning and 30.1MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:24,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1493.62ms. Allocated memory was 62.9MB in the beginning and 165.7MB in the end (delta: 102.8MB). Free memory was 38.5MB in the beginning and 83.0MB in the end (delta: -44.5MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2021-12-15 14:07:24,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 214.89ms. Allocated memory is still 165.7MB. Free memory was 83.0MB in the beginning and 92.8MB in the end (delta: -9.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-12-15 14:07:24,399 INFO L158 Benchmark]: Boogie Preprocessor took 147.73ms. Allocated memory is still 165.7MB. Free memory was 92.8MB in the beginning and 71.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 14:07:24,399 INFO L158 Benchmark]: RCFGBuilder took 8352.06ms. Allocated memory was 165.7MB in the beginning and 331.4MB in the end (delta: 165.7MB). Free memory was 71.8MB in the beginning and 74.2MB in the end (delta: -2.4MB). Peak memory consumption was 183.1MB. Max. memory is 16.1GB. [2021-12-15 14:07:24,399 INFO L158 Benchmark]: TraceAbstraction took 7007.54ms. Allocated memory was 331.4MB in the beginning and 398.5MB in the end (delta: 67.1MB). Free memory was 73.2MB in the beginning and 171.6MB in the end (delta: -98.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:07:24,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 30.1MB in the beginning and 30.1MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1493.62ms. Allocated memory was 62.9MB in the beginning and 165.7MB in the end (delta: 102.8MB). Free memory was 38.5MB in the beginning and 83.0MB in the end (delta: -44.5MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 214.89ms. Allocated memory is still 165.7MB. Free memory was 83.0MB in the beginning and 92.8MB in the end (delta: -9.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 147.73ms. Allocated memory is still 165.7MB. Free memory was 92.8MB in the beginning and 71.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * RCFGBuilder took 8352.06ms. Allocated memory was 165.7MB in the beginning and 331.4MB in the end (delta: 165.7MB). Free memory was 71.8MB in the beginning and 74.2MB in the end (delta: -2.4MB). Peak memory consumption was 183.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7007.54ms. Allocated memory was 331.4MB in the beginning and 398.5MB in the end (delta: 67.1MB). Free memory was 73.2MB in the beginning and 171.6MB in the end (delta: -98.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 14:07:24,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable