./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:18,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:18,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:18,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:18,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:18,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:18,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:18,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:18,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:18,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:18,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:18,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:18,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:18,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:18,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:18,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:18,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:18,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:18,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:18,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:18,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:18,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:18,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:18,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:18,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:18,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:18,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:18,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:18,251 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:18,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:18,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:18,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:18,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:18,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:18,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:18,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:18,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:18,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:18,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:18,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:18,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:18,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:07:18,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:18,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:18,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:18,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:18,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:18,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:18,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:18,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:18,293 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:18,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:18,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:18,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:18,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:18,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:18,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:18,295 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:18,295 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:18,295 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:18,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:18,296 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:18,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:18,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:18,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:18,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:18,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:18,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:18,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:18,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:18,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:07:18,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:07:18,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:18,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2021-12-16 06:07:18,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:18,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:18,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:18,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:18,570 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:18,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-12-16 06:07:18,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6f98736/9fc42b3c6a304ab5981a2205958a9ab7/FLAGaeb38aec1 [2021-12-16 06:07:19,244 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:19,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-12-16 06:07:19,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6f98736/9fc42b3c6a304ab5981a2205958a9ab7/FLAGaeb38aec1 [2021-12-16 06:07:19,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6f98736/9fc42b3c6a304ab5981a2205958a9ab7 [2021-12-16 06:07:19,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:19,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:19,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:19,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:19,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:19,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:19" (1/1) ... [2021-12-16 06:07:19,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef4226f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:19, skipping insertion in model container [2021-12-16 06:07:19,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:19" (1/1) ... [2021-12-16 06:07:19,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:19,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:20,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-12-16 06:07:20,094 WARN L564 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-12-16 06:07:20,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:20,445 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) [2021-12-16 06:07:20,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25a27e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:20, skipping insertion in model container [2021-12-16 06:07:20,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:20,448 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 06:07:20,449 INFO L158 Benchmark]: Toolchain (without parser) took 1030.66ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 54.4MB in the beginning and 56.1MB in the end (delta: -1.7MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2021-12-16 06:07:20,450 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:07:20,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1028.06ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 54.2MB in the beginning and 56.1MB in the end (delta: -1.9MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2021-12-16 06:07:20,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1028.06ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 54.2MB in the beginning and 56.1MB in the end (delta: -1.9MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2246]: Unsupported Syntax Found a cast between two array/pointer types 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-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:22,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:22,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:22,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:22,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:22,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:22,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:22,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:22,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:22,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:22,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:22,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:22,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:22,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:22,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:22,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:22,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:22,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:22,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:22,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:22,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:22,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:22,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:22,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:22,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:22,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:22,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:22,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:22,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:22,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:22,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:22,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:22,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:22,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:22,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:22,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:22,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:22,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:22,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:22,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:22,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:22,241 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 06:07:22,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:22,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:22,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:22,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:22,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:22,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:22,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:22,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:22,279 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:22,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:22,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:22,280 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:22,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:22,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:22,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:22,281 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:22,281 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:22,281 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:22,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:22,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:22,281 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 06:07:22,282 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 06:07:22,282 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:22,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:22,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:22,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:22,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:22,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:22,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:22,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:22,283 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 06:07:22,284 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 06:07:22,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:22,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 06:07:22,284 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2021-12-16 06:07:22,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:22,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:22,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:22,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:22,631 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:22,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-12-16 06:07:22,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f592db279/c28b86c0b09a4e36852517b7d3c2e21b/FLAG8414c7ffd [2021-12-16 06:07:23,429 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:23,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2021-12-16 06:07:23,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f592db279/c28b86c0b09a4e36852517b7d3c2e21b/FLAG8414c7ffd [2021-12-16 06:07:23,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f592db279/c28b86c0b09a4e36852517b7d3c2e21b [2021-12-16 06:07:23,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:23,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:23,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:23,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:23,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:23,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:23" (1/1) ... [2021-12-16 06:07:23,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4283828a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:23, skipping insertion in model container [2021-12-16 06:07:23,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:23" (1/1) ... [2021-12-16 06:07:23,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:23,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:24,449 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-12-16 06:07:24,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:24,919 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 06:07:24,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:24,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-12-16 06:07:25,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:25,262 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:07:25,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2021-12-16 06:07:25,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:25,633 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:07:25,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25 WrapperNode [2021-12-16 06:07:25,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:25,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:25,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:07:25,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:07:25,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:25,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:25,916 INFO L137 Inliner]: procedures = 142, calls = 2887, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3022 [2021-12-16 06:07:25,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:25,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:07:25,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:07:25,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:07:25,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:25,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:25,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:25,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:26,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:26,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:26,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:26,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:07:26,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:07:26,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:07:26,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:07:26,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (1/1) ... [2021-12-16 06:07:26,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:26,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:07:26,188 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) [2021-12-16 06:07:26,214 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 [2021-12-16 06:07:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2021-12-16 06:07:26,230 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2021-12-16 06:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 06:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 06:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 06:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-16 06:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 06:07:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-16 06:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-16 06:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-16 06:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-16 06:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-16 06:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-16 06:07:26,233 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2021-12-16 06:07:26,233 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2021-12-16 06:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-16 06:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-16 06:07:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-16 06:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-16 06:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-16 06:07:26,234 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2021-12-16 06:07:26,234 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2021-12-16 06:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-16 06:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 06:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 06:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-16 06:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-16 06:07:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-16 06:07:26,235 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-16 06:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2021-12-16 06:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2021-12-16 06:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 06:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2021-12-16 06:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2021-12-16 06:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2021-12-16 06:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2021-12-16 06:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 06:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 06:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-12-16 06:07:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-12-16 06:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-16 06:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-16 06:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-16 06:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 06:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2021-12-16 06:07:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2021-12-16 06:07:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-16 06:07:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-16 06:07:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 06:07:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 06:07:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-16 06:07:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 06:07:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-16 06:07:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-16 06:07:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-16 06:07:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-16 06:07:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-16 06:07:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-16 06:07:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2021-12-16 06:07:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2021-12-16 06:07:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2021-12-16 06:07:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2021-12-16 06:07:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2021-12-16 06:07:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2021-12-16 06:07:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:07:26,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:07:26,767 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:07:26,769 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:07:26,822 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:26,830 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-16 06:07:26,830 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-16 06:07:26,835 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:27,212 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-16 06:07:27,212 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-16 06:07:27,255 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:27,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-16 06:07:27,271 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-16 06:07:27,276 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,392 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,434 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,473 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2021-12-16 06:07:29,474 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2021-12-16 06:07:29,475 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,476 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,476 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-16 06:07:29,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-16 06:07:29,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-16 06:07:29,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-16 06:07:29,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-16 06:07:29,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-16 06:07:29,789 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,805 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:29,809 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:33,934 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-12-16 06:07:33,934 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-12-16 06:07:33,934 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-16 06:07:33,934 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-16 06:07:33,934 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2021-12-16 06:07:33,934 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2021-12-16 06:07:34,064 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,161 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-16 06:07:34,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-16 06:07:34,170 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,171 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,172 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,174 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,175 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,179 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,184 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:34,185 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:37,167 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2021-12-16 06:07:37,168 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2021-12-16 06:07:37,168 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2021-12-16 06:07:37,168 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2021-12-16 06:07:37,168 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2021-12-16 06:07:37,168 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2021-12-16 06:07:37,169 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2021-12-16 06:07:37,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2021-12-16 06:07:37,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2021-12-16 06:07:37,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2021-12-16 06:07:37,180 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:07:37,198 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:07:37,199 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-16 06:07:37,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:37 BoogieIcfgContainer [2021-12-16 06:07:37,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:07:37,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:07:37,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:07:37,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:07:37,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:23" (1/3) ... [2021-12-16 06:07:37,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddb1ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:37, skipping insertion in model container [2021-12-16 06:07:37,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:25" (2/3) ... [2021-12-16 06:07:37,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddb1ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:37, skipping insertion in model container [2021-12-16 06:07:37,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:37" (3/3) ... [2021-12-16 06:07:37,210 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2021-12-16 06:07:37,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:07:37,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2021-12-16 06:07:37,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:07:37,258 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 [2021-12-16 06:07:37,258 INFO L340 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2021-12-16 06:07:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-16 06:07:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 06:07:37,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:37,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 06:07:37,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:07:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2021-12-16 06:07:37,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:37,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25372826] [2021-12-16 06:07:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:37,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:37,322 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) [2021-12-16 06:07:37,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 06:07:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:38,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:07:38,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:38,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 06:07:38,953 INFO L354 Elim1Store]: treesize reduction 122, result has 34.1 percent of original size [2021-12-16 06:07:38,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 68 [2021-12-16 06:07:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:39,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:39,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25372826] [2021-12-16 06:07:39,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25372826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:39,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222480147] [2021-12-16 06:07:39,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:39,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,074 INFO L87 Difference]: Start difference. First operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:42,069 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2021-12-16 06:07:42,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-16 06:07:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:42,089 INFO L225 Difference]: With dead ends: 2077 [2021-12-16 06:07:42,090 INFO L226 Difference]: Without dead ends: 2075 [2021-12-16 06:07:42,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:42,094 INFO L933 BasicCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:42,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 3657 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-16 06:07:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2021-12-16 06:07:42,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2021-12-16 06:07:42,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1017 states have (on average 2.1435594886922322) internal successors, (2180), 1991 states have internal predecessors, (2180), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-16 06:07:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2021-12-16 06:07:42,260 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2021-12-16 06:07:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:42,260 INFO L470 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2021-12-16 06:07:42,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2021-12-16 06:07:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 06:07:42,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:42,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 06:07:42,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:42,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:42,480 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:07:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2021-12-16 06:07:42,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:42,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62090962] [2021-12-16 06:07:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:42,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:42,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:42,487 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) [2021-12-16 06:07:42,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 06:07:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 06:07:43,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:44,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 06:07:44,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 06:07:44,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 06:07:44,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 06:07:44,144 INFO L354 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2021-12-16 06:07:44,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2021-12-16 06:07:44,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 410 treesize of output 406 [2021-12-16 06:07:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:44,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:44,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62090962] [2021-12-16 06:07:44,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62090962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:44,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634137277] [2021-12-16 06:07:44,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:44,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:44,412 INFO L87 Difference]: Start difference. First operand 2075 states and 2347 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,239 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2021-12-16 06:07:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-16 06:07:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,248 INFO L225 Difference]: With dead ends: 2073 [2021-12-16 06:07:48,249 INFO L226 Difference]: Without dead ends: 2073 [2021-12-16 06:07:48,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:48,250 INFO L933 BasicCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3726 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 06:07:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-12-16 06:07:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2021-12-16 06:07:48,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1017 states have (on average 2.1415929203539825) internal successors, (2178), 1989 states have internal predecessors, (2178), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-16 06:07:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2021-12-16 06:07:48,294 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2021-12-16 06:07:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,295 INFO L470 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2021-12-16 06:07:48,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2021-12-16 06:07:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 06:07:48,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 06:07:48,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:48,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:48,501 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:07:48,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2021-12-16 06:07:48,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:48,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659379590] [2021-12-16 06:07:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:48,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:48,504 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) [2021-12-16 06:07:48,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 06:07:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 06:07:49,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:07:49,681 INFO L354 Elim1Store]: treesize reduction 118, result has 36.2 percent of original size [2021-12-16 06:07:49,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 72 [2021-12-16 06:07:49,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 06:07:49,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-16 06:07:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:49,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:07:49,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:07:49,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659379590] [2021-12-16 06:07:49,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659379590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:49,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085095728] [2021-12-16 06:07:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:49,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:07:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:49,774 INFO L87 Difference]: Start difference. First operand 2073 states and 2345 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:53,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:07:59,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:07:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:59,304 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2021-12-16 06:07:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:59,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-16 06:07:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:59,313 INFO L225 Difference]: With dead ends: 2072 [2021-12-16 06:07:59,313 INFO L226 Difference]: Without dead ends: 2072 [2021-12-16 06:07:59,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:59,314 INFO L933 BasicCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4094 mSDsCounter, 0 mSdLazyCounter, 2931 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2931 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:59,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6434 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2931 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-12-16 06:07:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-12-16 06:07:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2021-12-16 06:07:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-16 06:07:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2021-12-16 06:07:59,353 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2021-12-16 06:07:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:59,354 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2021-12-16 06:07:59,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2021-12-16 06:07:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 06:07:59,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:59,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 06:07:59,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 06:07:59,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:07:59,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:07:59,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:59,585 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2021-12-16 06:07:59,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:07:59,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964871823] [2021-12-16 06:07:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:59,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:07:59,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:07:59,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:07:59,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 06:08:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:00,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 06:08:00,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:00,657 INFO L354 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2021-12-16 06:08:00,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60 [2021-12-16 06:08:00,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 06:08:00,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 06:08:00,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-16 06:08:00,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-16 06:08:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:00,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:00,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964871823] [2021-12-16 06:08:00,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964871823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:00,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:00,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:00,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626530009] [2021-12-16 06:08:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:00,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:08:00,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:08:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:00,779 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:08:04,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:08:11,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:08:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:11,135 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2021-12-16 06:08:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:08:11,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-16 06:08:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:11,142 INFO L225 Difference]: With dead ends: 2071 [2021-12-16 06:08:11,142 INFO L226 Difference]: Without dead ends: 2071 [2021-12-16 06:08:11,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:08:11,150 INFO L933 BasicCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4157 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:11,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6497 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2866 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-12-16 06:08:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-12-16 06:08:11,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2021-12-16 06:08:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1016 states have (on average 2.141732283464567) internal successors, (2176), 1987 states have internal predecessors, (2176), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-16 06:08:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2021-12-16 06:08:11,187 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2021-12-16 06:08:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:11,187 INFO L470 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2021-12-16 06:08:11,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:08:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2021-12-16 06:08:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 06:08:11,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:11,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:11,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:11,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:11,407 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:08:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2021-12-16 06:08:11,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:11,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035891802] [2021-12-16 06:08:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:11,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:11,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:11,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 06:08:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:12,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:08:12,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:12,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:08:12,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:12,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035891802] [2021-12-16 06:08:12,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035891802] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:08:12,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:08:12,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:08:12,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868727399] [2021-12-16 06:08:12,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:08:12,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:08:12,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:08:12,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:08:12,436 INFO L87 Difference]: Start difference. First operand 2071 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:12,514 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2021-12-16 06:08:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:08:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-16 06:08:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:12,521 INFO L225 Difference]: With dead ends: 2074 [2021-12-16 06:08:12,521 INFO L226 Difference]: Without dead ends: 2072 [2021-12-16 06:08:12,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:08:12,522 INFO L933 BasicCegarLoop]: 2341 mSDtfsCounter, 2 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:12,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7018 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:08:12,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2021-12-16 06:08:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2021-12-16 06:08:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-16 06:08:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2021-12-16 06:08:12,559 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2021-12-16 06:08:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:12,559 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2021-12-16 06:08:12,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:08:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2021-12-16 06:08:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 06:08:12,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:12,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:12,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:12,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:12,780 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:08:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2021-12-16 06:08:12,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:12,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800131425] [2021-12-16 06:08:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:08:12,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:12,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:12,784 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:12,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 06:08:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:08:13,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:08:13,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:13,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:08:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:08:13,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:08:13,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800131425] [2021-12-16 06:08:13,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800131425] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:08:13,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:08:13,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 06:08:13,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829825149] [2021-12-16 06:08:13,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:08:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:08:13,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:08:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:08:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:08:13,949 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:08:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:08:14,181 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2021-12-16 06:08:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:08:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-12-16 06:08:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:08:14,189 INFO L225 Difference]: With dead ends: 2084 [2021-12-16 06:08:14,189 INFO L226 Difference]: Without dead ends: 2082 [2021-12-16 06:08:14,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:08:14,191 INFO L933 BasicCegarLoop]: 2340 mSDtfsCounter, 11 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:08:14,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 9352 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:08:14,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-12-16 06:08:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2021-12-16 06:08:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1026 states have (on average 2.1335282651072123) internal successors, (2189), 1997 states have internal predecessors, (2189), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2021-12-16 06:08:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2021-12-16 06:08:14,231 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2021-12-16 06:08:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:08:14,232 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2021-12-16 06:08:14,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:08:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2021-12-16 06:08:14,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 06:08:14,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:08:14,233 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:08:14,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 06:08:14,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:08:14,454 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATION, FloppyProcessQueuedRequestsErr2REQUIRES_VIOLATION (and 951 more)] === [2021-12-16 06:08:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:08:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2021-12-16 06:08:14,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:08:14,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727435712] [2021-12-16 06:08:14,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 06:08:14,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:08:14,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:08:14,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:08:14,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 06:08:16,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 06:08:16,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 06:08:16,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-16 06:08:16,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:08:16,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 06:08:16,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 06:08:16,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 06:08:16,738 INFO L354 Elim1Store]: treesize reduction 142, result has 24.1 percent of original size [2021-12-16 06:08:16,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 283 treesize of output 306