./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:13:45,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:13:45,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:13:45,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:13:45,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:13:45,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:13:45,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:13:45,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:13:45,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:13:45,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:13:45,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:13:45,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:13:45,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:13:45,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:13:45,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:13:45,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:13:45,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:13:45,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:13:45,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:13:45,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:13:45,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:13:45,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:13:45,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:13:45,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:13:45,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:13:45,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:13:45,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:13:45,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:13:45,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:13:45,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:13:45,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:13:45,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:13:45,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:13:45,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:13:45,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:13:45,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:13:45,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:13:45,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:13:45,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:13:45,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:13:45,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:13:45,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 19:13:46,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:13:46,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:13:46,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:13:46,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:13:46,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:13:46,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:13:46,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:13:46,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:13:46,008 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:13:46,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:13:46,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:13:46,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:13:46,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:13:46,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:13:46,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:13:46,009 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:13:46,009 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:13:46,009 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 19:13:46,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:13:46,010 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:13:46,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:13:46,010 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:13:46,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:13:46,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:13:46,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:13:46,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:13:46,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:13:46,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:13:46,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:13:46,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:13:46,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:13:46,012 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:13:46,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:13:46,012 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:13:46,012 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-12-13 19:13:46,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:13:46,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:13:46,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:13:46,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:13:46,207 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:13:46,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-12-13 19:13:48,836 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:13:49,121 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:13:49,122 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-12-13 19:13:49,144 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data/afa54143b/ae9ac266e0254e7e879888174cf4df4e/FLAG0c4924ef3 [2022-12-13 19:13:49,154 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data/afa54143b/ae9ac266e0254e7e879888174cf4df4e [2022-12-13 19:13:49,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:13:49,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:13:49,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:13:49,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:13:49,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:13:49,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:13:49" (1/1) ... [2022-12-13 19:13:49,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4783af66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:49, skipping insertion in model container [2022-12-13 19:13:49,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:13:49" (1/1) ... [2022-12-13 19:13:49,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:13:49,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:13:49,785 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-12-13 19:13:49,802 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-12-13 19:13:49,807 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:13:49,816 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-12-13 19:13:50,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:13:50,040 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 19:13:50,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42e5bb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:50, skipping insertion in model container [2022-12-13 19:13:50,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:13:50,040 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 19:13:50,042 INFO L158 Benchmark]: Toolchain (without parser) took 884.33ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 102.2MB in the beginning and 97.2MB in the end (delta: 5.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-12-13 19:13:50,042 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 90.2MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:13:50,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 882.73ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 102.2MB in the beginning and 97.2MB in the end (delta: 5.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-12-13 19:13:50,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 90.2MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 882.73ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 102.2MB in the beginning and 97.2MB in the end (delta: 5.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2246]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8 --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:13:51,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:13:51,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:13:51,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:13:51,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:13:51,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:13:51,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:13:51,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:13:51,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:13:51,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:13:51,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:13:51,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:13:51,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:13:51,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:13:51,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:13:51,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:13:51,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:13:51,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:13:51,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:13:51,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:13:51,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:13:51,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:13:51,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:13:51,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:13:51,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:13:51,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:13:51,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:13:51,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:13:51,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:13:51,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:13:51,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:13:51,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:13:51,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:13:51,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:13:51,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:13:51,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:13:51,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:13:51,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:13:51,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:13:51,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:13:51,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:13:51,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 19:13:51,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:13:51,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:13:51,589 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:13:51,589 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:13:51,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:13:51,590 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:13:51,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:13:51,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:13:51,591 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:13:51,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:13:51,592 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:13:51,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:13:51,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:13:51,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:13:51,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:13:51,593 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:13:51,593 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:13:51,593 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 19:13:51,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:13:51,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:13:51,594 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:13:51,594 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:13:51,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:13:51,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:13:51,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:13:51,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:13:51,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:13:51,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:13:51,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:13:51,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:13:51,596 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:13:51,596 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:13:51,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:13:51,596 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:13:51,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:13:51,597 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:13:51,597 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:13:51,597 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-12-13 19:13:51,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:13:51,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:13:51,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:13:51,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:13:51,832 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:13:51,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-12-13 19:13:54,369 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:13:54,689 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:13:54,689 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-12-13 19:13:54,717 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data/f3f3977fd/387f1a8c95eb48abbb6c7435d55cc84e/FLAG4fee8ab17 [2022-12-13 19:13:54,922 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/data/f3f3977fd/387f1a8c95eb48abbb6c7435d55cc84e [2022-12-13 19:13:54,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:13:54,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:13:54,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:13:54,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:13:54,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:13:54,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:13:54" (1/1) ... [2022-12-13 19:13:54,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a285c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:54, skipping insertion in model container [2022-12-13 19:13:54,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:13:54" (1/1) ... [2022-12-13 19:13:54,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:13:55,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:13:55,603 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-12-13 19:13:55,620 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-12-13 19:13:55,625 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:13:55,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:13:55,878 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 19:13:55,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:13:55,933 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-12-13 19:13:55,937 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-12-13 19:13:55,938 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:13:56,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:13:56,085 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:13:56,126 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-12-13 19:13:56,133 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-12-13 19:13:56,134 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-12-13 19:13:56,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:13:56,380 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:13:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56 WrapperNode [2022-12-13 19:13:56,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:13:56,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:13:56,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:13:56,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:13:56,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,518 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2022-12-13 19:13:56,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:13:56,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:13:56,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:13:56,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:13:56,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:13:56,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:13:56,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:13:56,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:13:56,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (1/1) ... [2022-12-13 19:13:56,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:13:56,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:13:56,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:13:56,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:13:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-12-13 19:13:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-12-13 19:13:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-13 19:13:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 19:13:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-13 19:13:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-12-13 19:13:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 19:13:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-12-13 19:13:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-12-13 19:13:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-12-13 19:13:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-12-13 19:13:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-12-13 19:13:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-12-13 19:13:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-12-13 19:13:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-12-13 19:13:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-12-13 19:13:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-12-13 19:13:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 19:13:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 19:13:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-12-13 19:13:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-12-13 19:13:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-12-13 19:13:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-12-13 19:13:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-12-13 19:13:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-12-13 19:13:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:13:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:13:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-12-13 19:13:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-12-13 19:13:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-12-13 19:13:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-12-13 19:13:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-12-13 19:13:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 19:13:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-12-13 19:13:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-12-13 19:13:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-12-13 19:13:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-12-13 19:13:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-12-13 19:13:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-12-13 19:13:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-12-13 19:13:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-12-13 19:13:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-12-13 19:13:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-12-13 19:13:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-12-13 19:13:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:13:56,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:13:57,139 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:13:57,142 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:13:57,193 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:57,205 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-12-13 19:13:57,206 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-12-13 19:13:57,211 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:57,661 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-12-13 19:13:57,661 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-12-13 19:13:57,715 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:57,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-12-13 19:13:57,730 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-12-13 19:13:57,736 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:59,859 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:59,878 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:59,919 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-12-13 19:13:59,919 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-12-13 19:13:59,921 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:59,922 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:13:59,923 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:00,293 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-12-13 19:14:00,293 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-12-13 19:14:00,293 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-12-13 19:14:00,293 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-12-13 19:14:00,294 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-12-13 19:14:00,294 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-12-13 19:14:00,299 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:00,317 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:00,319 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,138 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-12-13 19:14:04,138 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-12-13 19:14:04,138 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-12-13 19:14:04,138 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-12-13 19:14:04,138 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2022-12-13 19:14:04,138 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2022-12-13 19:14:04,246 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,328 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-12-13 19:14:04,328 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-12-13 19:14:04,336 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,337 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,339 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,342 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,343 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,346 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,347 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:04,348 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-12-13 19:14:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-12-13 19:14:07,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-12-13 19:14:07,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-12-13 19:14:07,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2022-12-13 19:14:07,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2022-12-13 19:14:07,800 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:14:07,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:14:07,815 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:14:07,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:14:07 BoogieIcfgContainer [2022-12-13 19:14:07,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:14:07,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:14:07,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:14:07,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:14:07,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:13:54" (1/3) ... [2022-12-13 19:14:07,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150eddb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:14:07, skipping insertion in model container [2022-12-13 19:14:07,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:13:56" (2/3) ... [2022-12-13 19:14:07,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150eddb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:14:07, skipping insertion in model container [2022-12-13 19:14:07,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:14:07" (3/3) ... [2022-12-13 19:14:07,828 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-12-13 19:14:07,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:14:07,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2022-12-13 19:14:07,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:14:07,910 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a1e6430, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:14:07,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2022-12-13 19:14:07,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2022-12-13 19:14:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 19:14:07,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:07,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 19:14:07,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2022-12-13 19:14:07,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:07,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082023977] [2022-12-13 19:14:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:07,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:07,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:07,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 19:14:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:09,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:14:09,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:09,758 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2022-12-13 19:14:09,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 36 [2022-12-13 19:14:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:09,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:14:09,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:14:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082023977] [2022-12-13 19:14:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082023977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:14:09,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:14:09,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:14:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029589798] [2022-12-13 19:14:09,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:14:09,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:14:09,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:14:09,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:14:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:14:09,845 INFO L87 Difference]: Start difference. First operand has 2081 states, 1019 states have (on average 2.154072620215898) internal successors, (2195), 1997 states have internal predecessors, (2195), 95 states have call successors, (95), 20 states have call predecessors, (95), 20 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:14:13,102 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2022-12-13 19:14:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:14:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 19:14:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:14:13,117 INFO L225 Difference]: With dead ends: 2077 [2022-12-13 19:14:13,117 INFO L226 Difference]: Without dead ends: 2075 [2022-12-13 19:14:13,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:14:13,120 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:14:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 19:14:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-12-13 19:14:13,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2022-12-13 19:14:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1017 states have (on average 2.1435594886922322) internal successors, (2180), 1991 states have internal predecessors, (2180), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-13 19:14:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2022-12-13 19:14:13,191 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2022-12-13 19:14:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:14:13,192 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2022-12-13 19:14:13,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2022-12-13 19:14:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-13 19:14:13,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:13,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-13 19:14:13,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:14:13,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:13,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2022-12-13 19:14:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:13,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583915122] [2022-12-13 19:14:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:13,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:13,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:13,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 19:14:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:15,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 19:14:15,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:15,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:15,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:15,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:15,267 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 19:14:15,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 47 [2022-12-13 19:14:15,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-12-13 19:14:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:15,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:14:15,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:14:15,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583915122] [2022-12-13 19:14:15,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583915122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:14:15,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:14:15,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:14:15,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989954055] [2022-12-13 19:14:15,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:14:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:14:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:14:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:14:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:14:15,322 INFO L87 Difference]: Start difference. First operand 2075 states and 2347 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:14:19,443 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2022-12-13 19:14:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:14:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-13 19:14:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:14:19,452 INFO L225 Difference]: With dead ends: 2073 [2022-12-13 19:14:19,452 INFO L226 Difference]: Without dead ends: 2073 [2022-12-13 19:14:19,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:14:19,453 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:14:19,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 19:14:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-12-13 19:14:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2022-12-13 19:14:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 1017 states have (on average 2.1415929203539825) internal successors, (2178), 1989 states have internal predecessors, (2178), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-13 19:14:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2022-12-13 19:14:19,490 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2022-12-13 19:14:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:14:19,490 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2022-12-13 19:14:19,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2022-12-13 19:14:19,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 19:14:19,490 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:19,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:14:19,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 19:14:19,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:19,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:19,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:19,692 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2022-12-13 19:14:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:19,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770796253] [2022-12-13 19:14:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:19,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:19,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 19:14:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:20,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:14:20,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:20,653 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-12-13 19:14:20,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 70 [2022-12-13 19:14:20,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:14:20,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-13 19:14:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:20,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:14:20,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:14:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770796253] [2022-12-13 19:14:20,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770796253] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:14:20,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:14:20,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:14:20,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498448389] [2022-12-13 19:14:20,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:14:20,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:14:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:14:20,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:14:20,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:14:20,719 INFO L87 Difference]: Start difference. First operand 2073 states and 2345 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:25,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:14:31,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:14:31,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:14:31,615 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2022-12-13 19:14:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:14:31,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 19:14:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:14:31,622 INFO L225 Difference]: With dead ends: 2072 [2022-12-13 19:14:31,622 INFO L226 Difference]: Without dead ends: 2072 [2022-12-13 19:14:31,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:14:31,623 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:14:31,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2022-12-13 19:14:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-12-13 19:14:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-12-13 19:14:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-13 19:14:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-12-13 19:14:31,663 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2022-12-13 19:14:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:14:31,663 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-12-13 19:14:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-12-13 19:14:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 19:14:31,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:31,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:14:31,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 19:14:31,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:31,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:31,867 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2022-12-13 19:14:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:31,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863738023] [2022-12-13 19:14:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:31,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:31,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:31,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:31,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 19:14:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:32,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:14:32,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:32,870 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2022-12-13 19:14:32,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 60 [2022-12-13 19:14:32,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:14:32,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:14:32,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-12-13 19:14:32,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 19:14:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:32,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:14:32,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:14:32,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863738023] [2022-12-13 19:14:32,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863738023] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:14:32,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:14:32,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:14:32,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086838190] [2022-12-13 19:14:32,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:14:32,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:14:32,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:14:32,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:14:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:14:32,982 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:37,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:14:45,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:14:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:14:45,360 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2022-12-13 19:14:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:14:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 19:14:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:14:45,365 INFO L225 Difference]: With dead ends: 2071 [2022-12-13 19:14:45,365 INFO L226 Difference]: Without dead ends: 2071 [2022-12-13 19:14:45,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:14:45,365 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:14:45,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2022-12-13 19:14:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-12-13 19:14:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2022-12-13 19:14:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1016 states have (on average 2.141732283464567) internal successors, (2176), 1987 states have internal predecessors, (2176), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-13 19:14:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2022-12-13 19:14:45,389 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2022-12-13 19:14:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:14:45,389 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2022-12-13 19:14:45,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:14:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2022-12-13 19:14:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 19:14:45,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:45,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:14:45,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 19:14:45,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:45,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:45,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2022-12-13 19:14:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:45,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39010101] [2022-12-13 19:14:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:45,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:45,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:45,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 19:14:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:46,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:14:46,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:46,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:14:46,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:14:46,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39010101] [2022-12-13 19:14:46,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39010101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:14:46,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:14:46,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:14:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572483129] [2022-12-13 19:14:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:14:46,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:14:46,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:14:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:14:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:14:46,443 INFO L87 Difference]: Start difference. First operand 2071 states and 2343 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:14:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:14:46,529 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2022-12-13 19:14:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:14:46,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-12-13 19:14:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:14:46,535 INFO L225 Difference]: With dead ends: 2074 [2022-12-13 19:14:46,536 INFO L226 Difference]: Without dead ends: 2072 [2022-12-13 19:14:46,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:14:46,537 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 2 mSDsluCounter, 4677 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:14:46,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7018 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:14:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-12-13 19:14:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-12-13 19:14:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 1017 states have (on average 2.1406096361848572) internal successors, (2177), 1988 states have internal predecessors, (2177), 95 states have call successors, (95), 20 states have call predecessors, (95), 19 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-13 19:14:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-12-13 19:14:46,577 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2022-12-13 19:14:46,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:14:46,577 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-12-13 19:14:46,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:14:46,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-12-13 19:14:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 19:14:46,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:46,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:14:46,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 19:14:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:46,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2022-12-13 19:14:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:46,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833593296] [2022-12-13 19:14:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:14:46,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:46,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:46,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:46,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 19:14:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:14:47,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:14:47,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:47,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:14:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:14:47,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:14:47,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833593296] [2022-12-13 19:14:47,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833593296] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:14:47,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:14:47,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 19:14:47,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932704797] [2022-12-13 19:14:47,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:14:47,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:14:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:14:47,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:14:47,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:14:47,735 INFO L87 Difference]: Start difference. First operand 2072 states and 2344 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:14:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:14:47,985 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2022-12-13 19:14:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:14:47,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-12-13 19:14:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:14:47,990 INFO L225 Difference]: With dead ends: 2084 [2022-12-13 19:14:47,990 INFO L226 Difference]: Without dead ends: 2082 [2022-12-13 19:14:47,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:14:47,991 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 8 mSDsluCounter, 7012 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9352 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:14:47,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9352 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:14:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-12-13 19:14:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2022-12-13 19:14:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1026 states have (on average 2.1335282651072123) internal successors, (2189), 1997 states have internal predecessors, (2189), 95 states have call successors, (95), 21 states have call predecessors, (95), 20 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-13 19:14:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2022-12-13 19:14:48,016 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2022-12-13 19:14:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:14:48,016 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2022-12-13 19:14:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:14:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2022-12-13 19:14:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 19:14:48,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:14:48,017 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:14:48,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 19:14:48,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:48,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:14:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:14:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2022-12-13 19:14:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:14:48,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999764227] [2022-12-13 19:14:48,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:14:48,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:14:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:14:48,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:14:48,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 19:14:50,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:14:50,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:14:50,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 19:14:50,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:14:51,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:14:51,327 INFO L217 Elim1Store]: Index analysis took 218 ms [2022-12-13 19:14:53,146 INFO L321 Elim1Store]: treesize reduction 1683, result has 16.4 percent of original size [2022-12-13 19:14:53,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 75 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 80 case distinctions, treesize of input 152 treesize of output 443 [2022-12-13 19:14:54,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 25 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 19:14:57,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 66 [2022-12-13 19:15:08,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:15:08,784 INFO L217 Elim1Store]: Index analysis took 111 ms [2022-12-13 19:15:09,195 INFO L321 Elim1Store]: treesize reduction 286, result has 33.5 percent of original size [2022-12-13 19:15:09,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 142 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 131 treesize of output 267 [2022-12-13 19:15:10,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 19:15:10,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:15:10,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:15:10,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999764227] [2022-12-13 19:15:10,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999764227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:15:10,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:15:10,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:15:10,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736319835] [2022-12-13 19:15:10,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:15:10,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:15:10,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:15:10,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:15:10,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:15:10,715 INFO L87 Difference]: Start difference. First operand 2082 states and 2356 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:15:16,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:15:20,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:16:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:16:28,914 INFO L93 Difference]: Finished difference Result 3138 states and 3580 transitions. [2022-12-13 19:16:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:16:28,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-12-13 19:16:28,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:16:28,920 INFO L225 Difference]: With dead ends: 3138 [2022-12-13 19:16:28,920 INFO L226 Difference]: Without dead ends: 3138 [2022-12-13 19:16:28,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:16:28,921 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1897 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 5914 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5914 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:16:28,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 7826 Invalid, 5932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 5914 Invalid, 2 Unknown, 0 Unchecked, 74.0s Time] [2022-12-13 19:16:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-12-13 19:16:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2621. [2022-12-13 19:16:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 1521 states have (on average 2.1341222879684416) internal successors, (3246), 2498 states have internal predecessors, (3246), 131 states have call successors, (131), 37 states have call predecessors, (131), 34 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2022-12-13 19:16:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3487 transitions. [2022-12-13 19:16:28,978 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3487 transitions. Word has length 17 [2022-12-13 19:16:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:16:28,978 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 3487 transitions. [2022-12-13 19:16:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:16:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3487 transitions. [2022-12-13 19:16:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 19:16:28,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:16:28,979 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:16:29,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 19:16:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:29,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:16:29,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:16:29,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2022-12-13 19:16:29,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:16:29,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880021867] [2022-12-13 19:16:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:16:29,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:29,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:16:29,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:16:29,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 19:16:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:16:30,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:16:30,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:16:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:16:30,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:16:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:16:30,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:16:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880021867] [2022-12-13 19:16:30,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880021867] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:16:30,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:16:30,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 19:16:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151946070] [2022-12-13 19:16:30,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:16:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:16:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:16:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:16:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:16:30,417 INFO L87 Difference]: Start difference. First operand 2621 states and 3487 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:16:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:16:31,181 INFO L93 Difference]: Finished difference Result 2649 states and 3519 transitions. [2022-12-13 19:16:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:16:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-12-13 19:16:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:16:31,187 INFO L225 Difference]: With dead ends: 2649 [2022-12-13 19:16:31,187 INFO L226 Difference]: Without dead ends: 2633 [2022-12-13 19:16:31,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:16:31,187 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 15 mSDsluCounter, 14024 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16365 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:16:31,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16365 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:16:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2022-12-13 19:16:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2022-12-13 19:16:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 1533 states have (on average 2.1239399869536855) internal successors, (3256), 2510 states have internal predecessors, (3256), 131 states have call successors, (131), 37 states have call predecessors, (131), 34 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2022-12-13 19:16:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3497 transitions. [2022-12-13 19:16:31,219 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3497 transitions. Word has length 17 [2022-12-13 19:16:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:16:31,219 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3497 transitions. [2022-12-13 19:16:31,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:16:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3497 transitions. [2022-12-13 19:16:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 19:16:31,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:16:31,220 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:16:31,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 19:16:31,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:31,421 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:16:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:16:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2022-12-13 19:16:31,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:16:31,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186891600] [2022-12-13 19:16:31,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:16:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:31,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:16:31,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:16:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 19:16:34,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:16:34,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:16:34,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 19:16:34,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:16:34,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:34,896 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-12-13 19:16:34,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 38 [2022-12-13 19:16:34,948 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 19:16:34,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2022-12-13 19:16:35,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:16:35,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 19:16:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 19:16:35,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:16:35,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:16:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186891600] [2022-12-13 19:16:35,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186891600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:16:35,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:16:35,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:16:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060057292] [2022-12-13 19:16:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:16:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:16:35,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:16:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:16:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:16:35,365 INFO L87 Difference]: Start difference. First operand 2633 states and 3497 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:16:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:16:53,541 INFO L93 Difference]: Finished difference Result 2665 states and 3541 transitions. [2022-12-13 19:16:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:16:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-12-13 19:16:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:16:53,547 INFO L225 Difference]: With dead ends: 2665 [2022-12-13 19:16:53,547 INFO L226 Difference]: Without dead ends: 2665 [2022-12-13 19:16:53,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:16:53,547 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 206 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 5032 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:16:53,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 5032 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2022-12-13 19:16:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-12-13 19:16:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2639. [2022-12-13 19:16:53,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 1538 states have (on average 2.1202860858257475) internal successors, (3261), 2514 states have internal predecessors, (3261), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2022-12-13 19:16:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3502 transitions. [2022-12-13 19:16:53,578 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3502 transitions. Word has length 23 [2022-12-13 19:16:53,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:16:53,578 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 3502 transitions. [2022-12-13 19:16:53,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:16:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3502 transitions. [2022-12-13 19:16:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 19:16:53,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:16:53,579 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:16:53,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 19:16:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:53,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:16:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:16:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2022-12-13 19:16:53,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:16:53,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078972325] [2022-12-13 19:16:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:16:53,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:53,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:16:53,791 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:16:53,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 19:16:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:16:55,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 19:16:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:16:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:16:55,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:16:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:16:56,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:16:56,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078972325] [2022-12-13 19:16:56,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078972325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:16:56,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:16:56,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-12-13 19:16:56,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843046533] [2022-12-13 19:16:56,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:16:56,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 19:16:56,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:16:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 19:16:56,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-12-13 19:16:56,043 INFO L87 Difference]: Start difference. First operand 2639 states and 3502 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:16:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:16:58,971 INFO L93 Difference]: Finished difference Result 2691 states and 3564 transitions. [2022-12-13 19:16:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 19:16:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-12-13 19:16:58,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:16:58,977 INFO L225 Difference]: With dead ends: 2691 [2022-12-13 19:16:58,977 INFO L226 Difference]: Without dead ends: 2663 [2022-12-13 19:16:58,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 19:16:58,978 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 26 mSDsluCounter, 32736 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35079 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:16:58,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35079 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 19:16:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-12-13 19:16:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2022-12-13 19:16:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1562 states have (on average 2.1030729833546733) internal successors, (3285), 2538 states have internal predecessors, (3285), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2022-12-13 19:16:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3526 transitions. [2022-12-13 19:16:59,013 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3526 transitions. Word has length 25 [2022-12-13 19:16:59,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:16:59,014 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3526 transitions. [2022-12-13 19:16:59,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:16:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3526 transitions. [2022-12-13 19:16:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 19:16:59,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:16:59,015 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:16:59,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 19:16:59,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:59,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:16:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:16:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2022-12-13 19:16:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:16:59,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712573840] [2022-12-13 19:16:59,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:16:59,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:16:59,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:16:59,228 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:16:59,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 19:17:02,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:17:02,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:17:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 19:17:02,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:17:02,457 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2022-12-13 19:17:02,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2022-12-13 19:17:05,581 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2022-12-13 19:17:05,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 68 [2022-12-13 19:17:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-12-13 19:17:05,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:17:05,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:17:05,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712573840] [2022-12-13 19:17:05,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712573840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:17:05,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:17:05,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:17:05,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822476596] [2022-12-13 19:17:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:17:05,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:17:05,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:17:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:17:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:17:05,885 INFO L87 Difference]: Start difference. First operand 2663 states and 3526 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:17:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:17:20,368 INFO L93 Difference]: Finished difference Result 3174 states and 3613 transitions. [2022-12-13 19:17:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:17:20,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-12-13 19:17:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:17:20,374 INFO L225 Difference]: With dead ends: 3174 [2022-12-13 19:17:20,374 INFO L226 Difference]: Without dead ends: 3174 [2022-12-13 19:17:20,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:17:20,375 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1831 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:17:20,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3600 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-12-13 19:17:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-12-13 19:17:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2660. [2022-12-13 19:17:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 1562 states have (on average 2.0992317541613317) internal successors, (3279), 2535 states have internal predecessors, (3279), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2022-12-13 19:17:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3520 transitions. [2022-12-13 19:17:20,413 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3520 transitions. Word has length 37 [2022-12-13 19:17:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:17:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 3520 transitions. [2022-12-13 19:17:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:17:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3520 transitions. [2022-12-13 19:17:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 19:17:20,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:17:20,415 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:17:20,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 19:17:20,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:17:20,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:17:20,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:17:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2022-12-13 19:17:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:17:20,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122649943] [2022-12-13 19:17:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:17:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:17:20,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:17:20,632 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:17:20,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 19:17:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:21,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 19:17:21,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:17:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:17:22,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:17:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:17:24,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:17:24,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122649943] [2022-12-13 19:17:24,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122649943] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:17:24,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:17:24,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 19:17:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050296271] [2022-12-13 19:17:24,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:17:24,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 19:17:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:17:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 19:17:24,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 19:17:24,798 INFO L87 Difference]: Start difference. First operand 2660 states and 3520 transitions. Second operand has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:17:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:17:36,760 INFO L93 Difference]: Finished difference Result 2760 states and 3642 transitions. [2022-12-13 19:17:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-13 19:17:36,760 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-12-13 19:17:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:17:36,765 INFO L225 Difference]: With dead ends: 2760 [2022-12-13 19:17:36,765 INFO L226 Difference]: Without dead ends: 2708 [2022-12-13 19:17:36,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2022-12-13 19:17:36,768 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 70 mSDsluCounter, 53882 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 56228 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:17:36,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 56228 Invalid, 1718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 19:17:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-12-13 19:17:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2022-12-13 19:17:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 1610 states have (on average 2.0664596273291926) internal successors, (3327), 2583 states have internal predecessors, (3327), 131 states have call successors, (131), 39 states have call predecessors, (131), 36 states have return successors, (110), 95 states have call predecessors, (110), 108 states have call successors, (110) [2022-12-13 19:17:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3568 transitions. [2022-12-13 19:17:36,799 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3568 transitions. Word has length 37 [2022-12-13 19:17:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:17:36,800 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3568 transitions. [2022-12-13 19:17:36,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.2) internal successors, (60), 50 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:17:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3568 transitions. [2022-12-13 19:17:36,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-13 19:17:36,800 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:17:36,800 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:17:36,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 19:17:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:17:37,001 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:17:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:17:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2022-12-13 19:17:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:17:37,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481833898] [2022-12-13 19:17:37,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:17:37,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:17:37,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:17:37,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:17:37,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 19:17:40,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:17:40,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:17:40,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:17:40,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:17:40,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:40,986 INFO L217 Elim1Store]: Index analysis took 106 ms [2022-12-13 19:17:40,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 34 [2022-12-13 19:17:41,213 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2022-12-13 19:17:41,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 24 case distinctions, treesize of input 91 treesize of output 123 [2022-12-13 19:17:47,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:17:47,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 19:17:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2022-12-13 19:17:47,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:17:47,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:17:47,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481833898] [2022-12-13 19:17:47,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481833898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:17:47,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:17:47,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:17:47,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468595429] [2022-12-13 19:17:47,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:17:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:17:47,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:17:47,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:17:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:17:47,221 INFO L87 Difference]: Start difference. First operand 2708 states and 3568 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:18:06,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:18:09,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:18:11,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:18:13,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:18:16,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:18:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:18:26,686 INFO L93 Difference]: Finished difference Result 4545 states and 5200 transitions. [2022-12-13 19:18:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:18:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-12-13 19:18:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:18:26,694 INFO L225 Difference]: With dead ends: 4545 [2022-12-13 19:18:26,694 INFO L226 Difference]: Without dead ends: 4545 [2022-12-13 19:18:26,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:18:26,695 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 3815 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4108 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3815 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:18:26,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3815 Valid, 3113 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4108 Invalid, 0 Unknown, 0 Unchecked, 39.3s Time] [2022-12-13 19:18:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-12-13 19:18:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 3424. [2022-12-13 19:18:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 2263 states have (on average 2.0556783031374284) internal successors, (4652), 3239 states have internal predecessors, (4652), 181 states have call successors, (181), 59 states have call predecessors, (181), 58 states have return successors, (164), 142 states have call predecessors, (164), 158 states have call successors, (164) [2022-12-13 19:18:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 4997 transitions. [2022-12-13 19:18:26,730 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 4997 transitions. Word has length 61 [2022-12-13 19:18:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:18:26,730 INFO L495 AbstractCegarLoop]: Abstraction has 3424 states and 4997 transitions. [2022-12-13 19:18:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:18:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 4997 transitions. [2022-12-13 19:18:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 19:18:26,731 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:18:26,731 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:18:26,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 19:18:26,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:18:26,933 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:18:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:18:26,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2022-12-13 19:18:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:18:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579012975] [2022-12-13 19:18:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:18:26,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:18:26,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:18:26,943 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:18:26,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 19:18:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:18:28,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-13 19:18:28,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:18:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:30,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:18:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:18:38,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:18:38,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579012975] [2022-12-13 19:18:38,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579012975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:18:38,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:18:38,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-12-13 19:18:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050155874] [2022-12-13 19:18:38,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:18:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-13 19:18:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:18:38,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-13 19:18:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-12-13 19:18:38,946 INFO L87 Difference]: Start difference. First operand 3424 states and 4997 transitions. Second operand has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:19:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:19:42,011 INFO L93 Difference]: Finished difference Result 3692 states and 5311 transitions. [2022-12-13 19:19:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-12-13 19:19:42,012 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2022-12-13 19:19:42,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:19:42,017 INFO L225 Difference]: With dead ends: 3692 [2022-12-13 19:19:42,017 INFO L226 Difference]: Without dead ends: 3544 [2022-12-13 19:19:42,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 59.4s TimeCoverageRelationStatistics Valid=13940, Invalid=32070, Unknown=0, NotChecked=0, Total=46010 [2022-12-13 19:19:42,023 INFO L413 NwaCegarLoop]: 2354 mSDtfsCounter, 134 mSDsluCounter, 112804 mSDsCounter, 0 mSdLazyCounter, 6168 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 115158 SdHoareTripleChecker+Invalid, 6312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 6168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:19:42,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 115158 Invalid, 6312 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [144 Valid, 6168 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-12-13 19:19:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2022-12-13 19:19:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3544. [2022-12-13 19:19:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 2383 states have (on average 2.0025178346621906) internal successors, (4772), 3359 states have internal predecessors, (4772), 181 states have call successors, (181), 59 states have call predecessors, (181), 58 states have return successors, (164), 142 states have call predecessors, (164), 158 states have call successors, (164) [2022-12-13 19:19:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5117 transitions. [2022-12-13 19:19:42,055 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5117 transitions. Word has length 63 [2022-12-13 19:19:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:19:42,055 INFO L495 AbstractCegarLoop]: Abstraction has 3544 states and 5117 transitions. [2022-12-13 19:19:42,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:19:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5117 transitions. [2022-12-13 19:19:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 19:19:42,056 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:19:42,056 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:42,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 19:19:42,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:19:42,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:19:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash -387940330, now seen corresponding path program 2 times [2022-12-13 19:19:42,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:19:42,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890426473] [2022-12-13 19:19:42,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:19:42,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:19:42,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:19:42,269 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:19:42,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 19:19:44,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:19:44,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:19:44,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 19:19:44,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:19:44,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:19:44,654 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-12-13 19:19:44,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 63 [2022-12-13 19:19:48,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:19:48,857 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-12-13 19:19:48,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 52 [2022-12-13 19:19:49,546 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-12-13 19:19:49,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 44 [2022-12-13 19:19:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2022-12-13 19:19:49,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:19:49,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:19:49,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890426473] [2022-12-13 19:19:49,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890426473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:49,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:49,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:19:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832137828] [2022-12-13 19:19:49,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:49,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:19:49,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:19:49,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:19:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:19:49,822 INFO L87 Difference]: Start difference. First operand 3544 states and 5117 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:20:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:20:12,525 INFO L93 Difference]: Finished difference Result 4062 states and 5221 transitions. [2022-12-13 19:20:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:20:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 111 [2022-12-13 19:20:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:20:12,530 INFO L225 Difference]: With dead ends: 4062 [2022-12-13 19:20:12,531 INFO L226 Difference]: Without dead ends: 4062 [2022-12-13 19:20:12,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:20:12,531 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 1906 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:20:12,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 3864 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time] [2022-12-13 19:20:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2022-12-13 19:20:12,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3541. [2022-12-13 19:20:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 2383 states have (on average 2.001258917331095) internal successors, (4769), 3356 states have internal predecessors, (4769), 181 states have call successors, (181), 59 states have call predecessors, (181), 58 states have return successors, (164), 142 states have call predecessors, (164), 158 states have call successors, (164) [2022-12-13 19:20:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5114 transitions. [2022-12-13 19:20:12,573 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5114 transitions. Word has length 111 [2022-12-13 19:20:12,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:20:12,573 INFO L495 AbstractCegarLoop]: Abstraction has 3541 states and 5114 transitions. [2022-12-13 19:20:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:20:12,573 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5114 transitions. [2022-12-13 19:20:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 19:20:12,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:20:12,575 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:12,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-13 19:20:12,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:20:12,775 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:20:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash -387940329, now seen corresponding path program 1 times [2022-12-13 19:20:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:20:12,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782545327] [2022-12-13 19:20:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:12,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:20:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:20:12,779 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:20:12,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 19:20:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-13 19:20:14,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:20:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:22,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:20:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:57,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:20:57,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782545327] [2022-12-13 19:20:57,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782545327] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:20:57,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:20:57,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 194 [2022-12-13 19:20:57,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680473303] [2022-12-13 19:20:57,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:20:57,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-12-13 19:20:57,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:20:57,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-12-13 19:20:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2022-12-13 19:20:57,098 INFO L87 Difference]: Start difference. First operand 3541 states and 5114 transitions. Second operand has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:28:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:13,475 INFO L93 Difference]: Finished difference Result 4364 states and 6313 transitions. [2022-12-13 19:28:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-13 19:28:13,477 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 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 111 [2022-12-13 19:28:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:13,488 INFO L225 Difference]: With dead ends: 4364 [2022-12-13 19:28:13,488 INFO L226 Difference]: Without dead ends: 4360 [2022-12-13 19:28:13,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 476 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22418 ImplicationChecksByTransitivity, 388.7s TimeCoverageRelationStatistics Valid=64697, Invalid=163309, Unknown=0, NotChecked=0, Total=228006 [2022-12-13 19:28:13,513 INFO L413 NwaCegarLoop]: 2376 mSDtfsCounter, 302 mSDsluCounter, 229942 mSDsCounter, 0 mSdLazyCounter, 42048 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 232318 SdHoareTripleChecker+Invalid, 42170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 42048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:13,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 232318 Invalid, 42170 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [122 Valid, 42048 Invalid, 0 Unknown, 0 Unchecked, 80.0s Time] [2022-12-13 19:28:13,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2022-12-13 19:28:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 4078. [2022-12-13 19:28:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 2917 states have (on average 1.9156667809393213) internal successors, (5588), 3890 states have internal predecessors, (5588), 181 states have call successors, (181), 62 states have call predecessors, (181), 61 states have return successors, (164), 142 states have call predecessors, (164), 158 states have call successors, (164) [2022-12-13 19:28:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 5933 transitions. [2022-12-13 19:28:13,568 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 5933 transitions. Word has length 111 [2022-12-13 19:28:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:13,568 INFO L495 AbstractCegarLoop]: Abstraction has 4078 states and 5933 transitions. [2022-12-13 19:28:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 194 states have internal predecessors, (206), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:28:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 5933 transitions. [2022-12-13 19:28:13,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-12-13 19:28:13,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:13,570 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:13,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 19:28:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:13,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:28:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash -228791273, now seen corresponding path program 2 times [2022-12-13 19:28:13,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:13,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527511702] [2022-12-13 19:28:13,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:28:13,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:13,777 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:13,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 19:28:17,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:28:17,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:28:17,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:28:17,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:28:17,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:17,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:17,541 INFO L321 Elim1Store]: treesize reduction 107, result has 28.7 percent of original size [2022-12-13 19:28:17,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 53 [2022-12-13 19:28:17,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2022-12-13 19:28:20,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 19:28:20,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 19:28:20,169 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 19:28:20,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 19:28:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2022-12-13 19:28:20,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:28:20,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:28:20,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527511702] [2022-12-13 19:28:20,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527511702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:28:20,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:28:20,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:28:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818524250] [2022-12-13 19:28:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:28:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:28:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:28:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:28:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:28:20,301 INFO L87 Difference]: Start difference. First operand 4078 states and 5933 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:28:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:28:47,008 INFO L93 Difference]: Finished difference Result 4101 states and 5969 transitions. [2022-12-13 19:28:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:28:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 207 [2022-12-13 19:28:47,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:28:47,014 INFO L225 Difference]: With dead ends: 4101 [2022-12-13 19:28:47,014 INFO L226 Difference]: Without dead ends: 4101 [2022-12-13 19:28:47,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:28:47,015 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 260 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 6294 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:28:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 6294 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time] [2022-12-13 19:28:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2022-12-13 19:28:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4075. [2022-12-13 19:28:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 2917 states have (on average 1.9146383270483374) internal successors, (5585), 3887 states have internal predecessors, (5585), 181 states have call successors, (181), 62 states have call predecessors, (181), 61 states have return successors, (164), 142 states have call predecessors, (164), 158 states have call successors, (164) [2022-12-13 19:28:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 5930 transitions. [2022-12-13 19:28:47,050 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 5930 transitions. Word has length 207 [2022-12-13 19:28:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:28:47,051 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 5930 transitions. [2022-12-13 19:28:47,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:28:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 5930 transitions. [2022-12-13 19:28:47,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-12-13 19:28:47,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:28:47,052 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:28:47,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 19:28:47,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:47,253 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-12-13 19:28:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:28:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash 350733531, now seen corresponding path program 1 times [2022-12-13 19:28:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:28:47,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825684453] [2022-12-13 19:28:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:28:47,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 19:28:47,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:28:47,256 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 19:28:47,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afc65fae-1aac-45eb-91b0-7af9487cba9c/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process