./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R --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-38b53e6 [2022-11-25 15:27:31,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:27:31,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:27:31,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:27:31,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:27:31,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:27:31,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:27:31,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:27:31,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:27:31,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:27:31,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:27:31,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:27:31,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:27:31,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:27:31,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:27:31,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:27:31,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:27:31,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:27:31,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:27:31,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:27:31,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:27:31,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:27:31,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:27:31,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:27:31,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:27:31,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:27:31,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:27:31,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:27:31,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:27:31,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:27:31,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:27:31,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:27:31,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:27:31,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:27:31,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:27:31,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:27:31,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:27:31,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:27:31,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:27:31,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:27:31,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:27:31,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:27:31,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:27:31,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:27:31,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:27:31,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:27:31,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:27:31,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:27:31,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:27:31,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:27:31,843 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:27:31,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:27:31,845 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:27:31,845 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:27:31,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:27:31,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:27:31,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:27:31,846 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:27:31,846 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:27:31,846 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:27:31,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:27:31,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:27:31,847 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:27:31,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:27:31,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:27:31,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:27:31,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:27:31,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:27:31,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:27:31,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:27:31,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:27:31,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:27:31,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:27:31,851 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:27:31,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:27:31,852 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_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-11-25 15:27:32,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:27:32,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:27:32,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:27:32,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:27:32,219 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:27:32,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-25 15:27:35,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:27:35,840 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:27:35,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-25 15:27:35,878 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data/0e82fefdb/06e044bf98334daa8db04a02105c6287/FLAG9ceb44625 [2022-11-25 15:27:35,895 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data/0e82fefdb/06e044bf98334daa8db04a02105c6287 [2022-11-25 15:27:35,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:27:35,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:27:35,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:27:35,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:27:35,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:27:35,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:27:35" (1/1) ... [2022-11-25 15:27:35,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5078853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:35, skipping insertion in model container [2022-11-25 15:27:35,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:27:35" (1/1) ... [2022-11-25 15:27:35,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:27:36,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:27:36,824 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_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-25 15:27:36,884 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-11-25 15:27:36,891 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 15:27:36,918 WARN L569 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2022-11-25 15:27:37,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:27:37,548 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) [2022-11-25 15:27:37,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20c86646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:37, skipping insertion in model container [2022-11-25 15:27:37,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:27:37,550 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 15:27:37,552 INFO L158 Benchmark]: Toolchain (without parser) took 1651.99ms. Allocated memory is still 163.6MB. Free memory was 123.3MB in the beginning and 105.7MB in the end (delta: 17.7MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2022-11-25 15:27:37,552 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory was 74.0MB in the beginning and 73.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:27:37,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1649.48ms. Allocated memory is still 163.6MB. Free memory was 123.3MB in the beginning and 105.7MB in the end (delta: 17.7MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2022-11-25 15:27:37,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 130.0MB. Free memory was 74.0MB in the beginning and 73.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1649.48ms. Allocated memory is still 163.6MB. Free memory was 123.3MB in the beginning and 105.7MB in the end (delta: 17.7MB). Peak memory consumption was 90.7MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R --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-38b53e6 [2022-11-25 15:27:39,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:27:39,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:27:39,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:27:39,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:27:39,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:27:39,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:27:40,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:27:40,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:27:40,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:27:40,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:27:40,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:27:40,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:27:40,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:27:40,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:27:40,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:27:40,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:27:40,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:27:40,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:27:40,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:27:40,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:27:40,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:27:40,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:27:40,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:27:40,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:27:40,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:27:40,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:27:40,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:27:40,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:27:40,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:27:40,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:27:40,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:27:40,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:27:40,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:27:40,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:27:40,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:27:40,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:27:40,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:27:40,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:27:40,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:27:40,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:27:40,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 15:27:40,121 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:27:40,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:27:40,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:27:40,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:27:40,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:27:40,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:27:40,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:27:40,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:27:40,125 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:27:40,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:27:40,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:27:40,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:27:40,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:27:40,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:27:40,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:27:40,128 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:27:40,129 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:27:40,129 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:27:40,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:27:40,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:27:40,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 15:27:40,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 15:27:40,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:27:40,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:27:40,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:27:40,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:27:40,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:27:40,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:27:40,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:27:40,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:27:40,133 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 15:27:40,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 15:27:40,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:27:40,134 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:27:40,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:27:40,134 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 15:27:40,135 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_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13096ecc896a778cf08851ae14dc5c7b87ba00c42e74b90edd25cd2cb7c21f17 [2022-11-25 15:27:40,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:27:40,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:27:40,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:27:40,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:27:40,530 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:27:40,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-25 15:27:43,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:27:44,181 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:27:44,182 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c [2022-11-25 15:27:44,240 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data/7fb6c46a7/0652e2a726854f2ea0918d8f2a4a7845/FLAG2c65a0d4f [2022-11-25 15:27:44,255 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/data/7fb6c46a7/0652e2a726854f2ea0918d8f2a4a7845 [2022-11-25 15:27:44,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:27:44,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:27:44,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:27:44,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:27:44,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:27:44,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:27:44" (1/1) ... [2022-11-25 15:27:44,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27cce8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:44, skipping insertion in model container [2022-11-25 15:27:44,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:27:44" (1/1) ... [2022-11-25 15:27:44,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:27:44,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:27:45,267 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_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-25 15:27:45,317 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-11-25 15:27:45,336 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 15:27:45,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:27:45,873 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 15:27:45,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:27:45,994 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_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-25 15:27:46,003 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-11-25 15:27:46,007 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 15:27:46,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:27:46,424 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:27:46,484 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_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/sv-benchmarks/c/ntdrivers/floppy.i.cil-3.c[77246,77259] [2022-11-25 15:27:46,492 WARN L623 FunctionHandler]: Unknown extern function swprintf [2022-11-25 15:27:46,494 WARN L623 FunctionHandler]: Unknown extern function sprintf [2022-11-25 15:27:46,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:27:46,825 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:27:46,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46 WrapperNode [2022-11-25 15:27:46,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:27:46,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:27:46,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:27:46,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:27:46,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:46,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,080 INFO L138 Inliner]: procedures = 142, calls = 2895, calls flagged for inlining = 37, calls inlined = 26, statements flattened = 3030 [2022-11-25 15:27:47,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:27:47,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:27:47,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:27:47,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:27:47,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:27:47,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:27:47,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:27:47,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:27:47,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (1/1) ... [2022-11-25 15:27:47,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:27:47,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:27:47,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:27:47,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:27:47,512 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-11-25 15:27:47,512 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-11-25 15:27:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-25 15:27:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 15:27:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-25 15:27:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-25 15:27:47,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-25 15:27:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-25 15:27:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-25 15:27:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-11-25 15:27:47,514 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-11-25 15:27:47,514 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-11-25 15:27:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-11-25 15:27:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-11-25 15:27:47,515 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-11-25 15:27:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-25 15:27:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-11-25 15:27:47,516 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-11-25 15:27:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-25 15:27:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 15:27:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-11-25 15:27:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-11-25 15:27:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-25 15:27:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-25 15:27:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-25 15:27:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-25 15:27:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-25 15:27:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-11-25 15:27:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-11-25 15:27:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-11-25 15:27:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-11-25 15:27:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:27:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:27:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-11-25 15:27:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-11-25 15:27:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-11-25 15:27:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-11-25 15:27:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:27:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:27:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-25 15:27:47,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-25 15:27:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-25 15:27:47,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-25 15:27:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-25 15:27:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 15:27:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-11-25 15:27:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-11-25 15:27:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-25 15:27:47,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-25 15:27:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:27:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 15:27:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-25 15:27:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 15:27:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-25 15:27:47,524 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-11-25 15:27:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-11-25 15:27:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-25 15:27:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-25 15:27:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-25 15:27:47,525 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-11-25 15:27:47,525 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-11-25 15:27:47,526 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-11-25 15:27:47,526 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-11-25 15:27:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-11-25 15:27:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-11-25 15:27:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:27:47,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:27:48,329 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:27:48,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:27:48,420 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:48,445 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-25 15:27:48,446 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-25 15:27:48,455 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:49,151 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-11-25 15:27:49,151 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-11-25 15:27:49,229 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:49,254 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-11-25 15:27:49,254 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-11-25 15:27:49,263 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:51,486 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:51,512 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:51,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-11-25 15:27:51,575 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-11-25 15:27:51,579 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:51,580 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:51,581 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:52,073 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-11-25 15:27:52,073 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-11-25 15:27:52,074 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-11-25 15:27:52,074 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-11-25 15:27:52,074 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-11-25 15:27:52,074 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-11-25 15:27:52,086 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:52,115 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:52,125 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,079 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-11-25 15:27:57,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-11-25 15:27:57,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-11-25 15:27:57,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-11-25 15:27:57,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2022-11-25 15:27:57,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2022-11-25 15:27:57,266 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-25 15:27:57,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-25 15:27:57,431 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,433 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,435 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,444 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,445 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,453 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,455 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:27:57,457 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-25 15:28:02,642 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2022-11-25 15:28:02,643 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2022-11-25 15:28:02,643 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2022-11-25 15:28:02,643 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2022-11-25 15:28:02,643 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2022-11-25 15:28:02,643 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-11-25 15:28:02,644 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2022-11-25 15:28:02,645 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2022-11-25 15:28:02,667 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:28:02,684 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:28:02,685 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 15:28:02,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:28:02 BoogieIcfgContainer [2022-11-25 15:28:02,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:28:02,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:28:02,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:28:02,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:28:02,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:27:44" (1/3) ... [2022-11-25 15:28:02,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfeb3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:28:02, skipping insertion in model container [2022-11-25 15:28:02,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:27:46" (2/3) ... [2022-11-25 15:28:02,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfeb3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:28:02, skipping insertion in model container [2022-11-25 15:28:02,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:28:02" (3/3) ... [2022-11-25 15:28:02,699 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-3.c [2022-11-25 15:28:02,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:28:02,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 954 error locations. [2022-11-25 15:28:02,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:28:02,812 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;@34fa64d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:28:02,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 954 error locations. [2022-11-25 15:28:02,822 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) [2022-11-25 15:28:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 15:28:02,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:02,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 15:28:02,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1700083, now seen corresponding path program 1 times [2022-11-25 15:28:02,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:02,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852161557] [2022-11-25 15:28:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:02,851 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 [2022-11-25 15:28:02,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:02,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:02,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:04,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:28:04,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:05,231 INFO L321 Elim1Store]: treesize reduction 184, result has 13.6 percent of original size [2022-11-25 15:28:05,232 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 [2022-11-25 15:28:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:05,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:05,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:28:05,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852161557] [2022-11-25 15:28:05,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852161557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:05,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:05,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:28:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766552029] [2022-11-25 15:28:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:05,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:05,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:28:05,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:05,381 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) [2022-11-25 15:28:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:10,411 INFO L93 Difference]: Finished difference Result 2077 states and 2349 transitions. [2022-11-25 15:28:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:10,420 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 [2022-11-25 15:28:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:10,442 INFO L225 Difference]: With dead ends: 2077 [2022-11-25 15:28:10,442 INFO L226 Difference]: Without dead ends: 2075 [2022-11-25 15:28:10,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:10,447 INFO L413 NwaCegarLoop]: 2312 mSDtfsCounter, 57 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:10,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3654 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 15:28:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2022-11-25 15:28:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2075. [2022-11-25 15:28:10,563 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) [2022-11-25 15:28:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2347 transitions. [2022-11-25 15:28:10,577 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2347 transitions. Word has length 3 [2022-11-25 15:28:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2347 transitions. [2022-11-25 15:28:10,577 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) [2022-11-25 15:28:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2347 transitions. [2022-11-25 15:28:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-25 15:28:10,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:10,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-25 15:28:10,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:10,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:10,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1700084, now seen corresponding path program 1 times [2022-11-25 15:28:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916337048] [2022-11-25 15:28:10,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:10,808 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 [2022-11-25 15:28:10,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:10,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:10,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:12,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:28:12,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:12,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:28:12,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:28:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:28:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:28:13,058 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-25 15:28:13,058 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 [2022-11-25 15:28:13,096 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 [2022-11-25 15:28:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:13,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:13,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:28:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916337048] [2022-11-25 15:28:13,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916337048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:13,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:13,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:28:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386764669] [2022-11-25 15:28:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:28:13,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:28:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:28:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:28:13,139 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) [2022-11-25 15:28:19,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:19,384 INFO L93 Difference]: Finished difference Result 2073 states and 2345 transitions. [2022-11-25 15:28:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:28:19,385 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 [2022-11-25 15:28:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:19,394 INFO L225 Difference]: With dead ends: 2073 [2022-11-25 15:28:19,394 INFO L226 Difference]: Without dead ends: 2073 [2022-11-25 15:28:19,395 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 [2022-11-25 15:28:19,396 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 5 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 6.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:19,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3723 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-25 15:28:19,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-11-25 15:28:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2073. [2022-11-25 15:28:19,440 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) [2022-11-25 15:28:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2345 transitions. [2022-11-25 15:28:19,450 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2345 transitions. Word has length 3 [2022-11-25 15:28:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 2345 transitions. [2022-11-25 15:28:19,450 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) [2022-11-25 15:28:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2345 transitions. [2022-11-25 15:28:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 15:28:19,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:19,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:28:19,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:19,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:19,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:19,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash -890788470, now seen corresponding path program 1 times [2022-11-25 15:28:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:19,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157702391] [2022-11-25 15:28:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:19,668 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 [2022-11-25 15:28:19,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:19,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:19,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:20,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:28:20,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:21,076 INFO L321 Elim1Store]: treesize reduction 150, result has 29.6 percent of original size [2022-11-25 15:28:21,076 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 [2022-11-25 15:28:21,126 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 [2022-11-25 15:28:21,162 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 [2022-11-25 15:28:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:21,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:21,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:28:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157702391] [2022-11-25 15:28:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157702391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:21,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:28:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881836453] [2022-11-25 15:28:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:28:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:28:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:28:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:28:21,188 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) [2022-11-25 15:28:27,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:28:35,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:28:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:35,727 INFO L93 Difference]: Finished difference Result 2072 states and 2344 transitions. [2022-11-25 15:28:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:28:35,728 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 [2022-11-25 15:28:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:35,738 INFO L225 Difference]: With dead ends: 2072 [2022-11-25 15:28:35,738 INFO L226 Difference]: Without dead ends: 2072 [2022-11-25 15:28:35,739 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 [2022-11-25 15:28:35,740 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 4 mSDsluCounter, 4091 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:35,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6431 Invalid, 2937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2934 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2022-11-25 15:28:35,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-25 15:28:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-25 15:28:35,795 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) [2022-11-25 15:28:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-11-25 15:28:35,806 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 6 [2022-11-25 15:28:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:35,806 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-11-25 15:28:35,807 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) [2022-11-25 15:28:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-11-25 15:28:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-25 15:28:35,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:35,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:28:35,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:36,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:36,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:36,034 INFO L85 PathProgramCache]: Analyzing trace with hash -890788469, now seen corresponding path program 1 times [2022-11-25 15:28:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:36,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174903646] [2022-11-25 15:28:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:36,037 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 [2022-11-25 15:28:36,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:36,039 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:36,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:37,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 15:28:37,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:37,432 INFO L321 Elim1Store]: treesize reduction 130, result has 29.7 percent of original size [2022-11-25 15:28:37,433 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 [2022-11-25 15:28:37,520 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 [2022-11-25 15:28:37,533 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 [2022-11-25 15:28:37,592 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 [2022-11-25 15:28:37,603 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 [2022-11-25 15:28:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:37,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:37,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:28:37,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174903646] [2022-11-25 15:28:37,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174903646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:37,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:37,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:28:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943605382] [2022-11-25 15:28:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:37,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:28:37,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:28:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:28:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:28:37,635 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) [2022-11-25 15:28:44,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:28:53,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 15:28:54,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:54,024 INFO L93 Difference]: Finished difference Result 2071 states and 2343 transitions. [2022-11-25 15:28:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:28:54,025 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 [2022-11-25 15:28:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:54,033 INFO L225 Difference]: With dead ends: 2071 [2022-11-25 15:28:54,033 INFO L226 Difference]: Without dead ends: 2071 [2022-11-25 15:28:54,034 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 [2022-11-25 15:28:54,034 INFO L413 NwaCegarLoop]: 2340 mSDtfsCounter, 2 mSDsluCounter, 4154 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s 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, 16.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:54,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6494 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2869 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2022-11-25 15:28:54,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2022-11-25 15:28:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2022-11-25 15:28:54,075 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) [2022-11-25 15:28:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2343 transitions. [2022-11-25 15:28:54,082 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2343 transitions. Word has length 6 [2022-11-25 15:28:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:54,083 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2343 transitions. [2022-11-25 15:28:54,083 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) [2022-11-25 15:28:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2343 transitions. [2022-11-25 15:28:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 15:28:54,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:54,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:54,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:54,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:54,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:54,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1867291348, now seen corresponding path program 1 times [2022-11-25 15:28:54,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:54,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844923229] [2022-11-25 15:28:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:54,309 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 [2022-11-25 15:28:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:54,310 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:54,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:55,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:28:55,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:55,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:28:55,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:28:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844923229] [2022-11-25 15:28:55,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844923229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:28:55,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:28:55,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:28:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991111313] [2022-11-25 15:28:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:28:55,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:28:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:28:55,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:28:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:28:55,398 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) [2022-11-25 15:28:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:55,510 INFO L93 Difference]: Finished difference Result 2074 states and 2346 transitions. [2022-11-25 15:28:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:28:55,511 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 [2022-11-25 15:28:55,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:55,518 INFO L225 Difference]: With dead ends: 2074 [2022-11-25 15:28:55,518 INFO L226 Difference]: Without dead ends: 2072 [2022-11-25 15:28:55,519 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 [2022-11-25 15:28:55,519 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 [2022-11-25 15:28:55,520 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] [2022-11-25 15:28:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-11-25 15:28:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2072. [2022-11-25 15:28:55,555 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) [2022-11-25 15:28:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2344 transitions. [2022-11-25 15:28:55,563 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2344 transitions. Word has length 13 [2022-11-25 15:28:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:55,564 INFO L495 AbstractCegarLoop]: Abstraction has 2072 states and 2344 transitions. [2022-11-25 15:28:55,564 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) [2022-11-25 15:28:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2344 transitions. [2022-11-25 15:28:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 15:28:55,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:55,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:55,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:55,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:55,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1906515750, now seen corresponding path program 1 times [2022-11-25 15:28:55,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:55,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489988546] [2022-11-25 15:28:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:28:55,790 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 [2022-11-25 15:28:55,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:55,791 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:55,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:28:56,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:28:56,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:28:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:56,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:28:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:28:57,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:28:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489988546] [2022-11-25 15:28:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489988546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:28:57,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:28:57,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 15:28:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770194183] [2022-11-25 15:28:57,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:28:57,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:28:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:28:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:28:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:28:57,159 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) [2022-11-25 15:28:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:28:57,572 INFO L93 Difference]: Finished difference Result 2084 states and 2359 transitions. [2022-11-25 15:28:57,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:28:57,573 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 [2022-11-25 15:28:57,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:28:57,582 INFO L225 Difference]: With dead ends: 2084 [2022-11-25 15:28:57,583 INFO L226 Difference]: Without dead ends: 2082 [2022-11-25 15:28:57,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:28:57,586 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 15:28:57,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9352 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 15:28:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-11-25 15:28:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2022-11-25 15:28:57,627 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) [2022-11-25 15:28:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2356 transitions. [2022-11-25 15:28:57,634 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2356 transitions. Word has length 14 [2022-11-25 15:28:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:28:57,634 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2356 transitions. [2022-11-25 15:28:57,635 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) [2022-11-25 15:28:57,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2356 transitions. [2022-11-25 15:28:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:28:57,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:28:57,636 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:28:57,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:28:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:28:57,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:28:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:28:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494956, now seen corresponding path program 2 times [2022-11-25 15:28:57,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:28:57,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503019072] [2022-11-25 15:28:57,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:28:57,854 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 [2022-11-25 15:28:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:28:57,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:28:57,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:29:00,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:29:00,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:00,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-25 15:29:00,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:01,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:01,571 INFO L217 Elim1Store]: Index analysis took 299 ms [2022-11-25 15:29:04,632 INFO L321 Elim1Store]: treesize reduction 1683, result has 16.4 percent of original size [2022-11-25 15:29:04,633 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 [2022-11-25 15:29:06,545 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 [2022-11-25 15:29:10,089 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 [2022-11-25 15:29:25,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:29:25,801 INFO L217 Elim1Store]: Index analysis took 162 ms [2022-11-25 15:29:26,510 INFO L321 Elim1Store]: treesize reduction 286, result has 33.5 percent of original size [2022-11-25 15:29:26,510 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 [2022-11-25 15:29:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:29:28,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:28,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:29:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503019072] [2022-11-25 15:29:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503019072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:28,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:28,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:29:28,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087664545] [2022-11-25 15:29:28,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:28,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:29:28,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:29:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:29:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:29:28,591 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) [2022-11-25 15:29:37,087 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] [2022-11-25 15:29:41,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:29:44,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:29:50,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:31:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:21,007 INFO L93 Difference]: Finished difference Result 3138 states and 3580 transitions. [2022-11-25 15:31:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:31:21,008 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 [2022-11-25 15:31:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:21,024 INFO L225 Difference]: With dead ends: 3138 [2022-11-25 15:31:21,024 INFO L226 Difference]: Without dead ends: 3138 [2022-11-25 15:31:21,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=47, Invalid=84, Unknown=1, NotChecked=0, Total=132 [2022-11-25 15:31:21,026 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1897 mSDsluCounter, 6184 mSDsCounter, 0 mSdLazyCounter, 5913 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 5932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5913 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:21,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 7826 Invalid, 5932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 5913 Invalid, 3 Unknown, 0 Unchecked, 105.5s Time] [2022-11-25 15:31:21,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2022-11-25 15:31:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2621. [2022-11-25 15:31:21,106 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) [2022-11-25 15:31:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 3487 transitions. [2022-11-25 15:31:21,116 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 3487 transitions. Word has length 17 [2022-11-25 15:31:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:21,116 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 3487 transitions. [2022-11-25 15:31:21,117 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) [2022-11-25 15:31:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 3487 transitions. [2022-11-25 15:31:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 15:31:21,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:21,118 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:21,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:21,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:31:21,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:31:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1829494955, now seen corresponding path program 1 times [2022-11-25 15:31:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:31:21,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318658937] [2022-11-25 15:31:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:21,334 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 [2022-11-25 15:31:21,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:31:21,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:31:21,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:31:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:31:22,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:31:22,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:31:22,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:31:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:31:23,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:31:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318658937] [2022-11-25 15:31:23,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318658937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:31:23,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:31:23,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 15:31:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861366498] [2022-11-25 15:31:23,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:31:23,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 15:31:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:31:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 15:31:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-25 15:31:23,270 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) [2022-11-25 15:31:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:24,549 INFO L93 Difference]: Finished difference Result 2649 states and 3519 transitions. [2022-11-25 15:31:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 15:31:24,550 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 [2022-11-25 15:31:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:24,562 INFO L225 Difference]: With dead ends: 2649 [2022-11-25 15:31:24,563 INFO L226 Difference]: Without dead ends: 2633 [2022-11-25 15:31:24,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2022-11-25 15:31:24,564 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 15 mSDsluCounter, 14024 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:24,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 16365 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:31:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2022-11-25 15:31:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2633. [2022-11-25 15:31:24,623 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) [2022-11-25 15:31:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 3497 transitions. [2022-11-25 15:31:24,633 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 3497 transitions. Word has length 17 [2022-11-25 15:31:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:24,633 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 3497 transitions. [2022-11-25 15:31:24,633 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) [2022-11-25 15:31:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 3497 transitions. [2022-11-25 15:31:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 15:31:24,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:24,635 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:24,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:24,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:31:24,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:31:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1174908437, now seen corresponding path program 2 times [2022-11-25 15:31:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:31:24,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484639906] [2022-11-25 15:31:24,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:31:24,854 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 [2022-11-25 15:31:24,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:31:24,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:31:24,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:31:28,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:31:28,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:31:28,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 15:31:28,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:31:28,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:28,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:28,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:28,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:28,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:28,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:28,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:29,202 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 15:31:29,202 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 [2022-11-25 15:31:29,279 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-25 15:31:29,280 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 [2022-11-25 15:31:29,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:31:29,867 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 [2022-11-25 15:31:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 15:31:29,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:31:29,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:31:29,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484639906] [2022-11-25 15:31:29,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484639906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:31:29,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:31:29,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:31:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804809945] [2022-11-25 15:31:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:31:29,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:31:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:31:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:31:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:29,973 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) [2022-11-25 15:31:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:31:59,038 INFO L93 Difference]: Finished difference Result 2665 states and 3541 transitions. [2022-11-25 15:31:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:31:59,040 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 [2022-11-25 15:31:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:31:59,049 INFO L225 Difference]: With dead ends: 2665 [2022-11-25 15:31:59,049 INFO L226 Difference]: Without dead ends: 2665 [2022-11-25 15:31:59,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:31:59,050 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 206 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s 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, 29.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:31:59,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 5032 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 29.0s Time] [2022-11-25 15:31:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-11-25 15:31:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2639. [2022-11-25 15:31:59,105 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) [2022-11-25 15:31:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3502 transitions. [2022-11-25 15:31:59,115 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3502 transitions. Word has length 23 [2022-11-25 15:31:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:31:59,115 INFO L495 AbstractCegarLoop]: Abstraction has 2639 states and 3502 transitions. [2022-11-25 15:31:59,116 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) [2022-11-25 15:31:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3502 transitions. [2022-11-25 15:31:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 15:31:59,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:31:59,117 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:31:59,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:31:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:31:59,331 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:31:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:31:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -489338443, now seen corresponding path program 1 times [2022-11-25 15:31:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:31:59,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177709644] [2022-11-25 15:31:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:31:59,334 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 [2022-11-25 15:31:59,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:31:59,336 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:31:59,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:32:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:00,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 15:32:00,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:01,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:32:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:02,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:32:02,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177709644] [2022-11-25 15:32:02,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177709644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:32:02,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:32:02,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-25 15:32:02,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284219837] [2022-11-25 15:32:02,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:32:02,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 15:32:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:32:02,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 15:32:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-25 15:32:02,300 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) [2022-11-25 15:32:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:07,193 INFO L93 Difference]: Finished difference Result 2691 states and 3564 transitions. [2022-11-25 15:32:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-25 15:32:07,194 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 [2022-11-25 15:32:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:07,219 INFO L225 Difference]: With dead ends: 2691 [2022-11-25 15:32:07,221 INFO L226 Difference]: Without dead ends: 2663 [2022-11-25 15:32:07,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=890, Invalid=1866, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 15:32:07,223 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 26 mSDsluCounter, 32736 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35079 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:07,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35079 Invalid, 478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 15:32:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-11-25 15:32:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2022-11-25 15:32:07,293 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) [2022-11-25 15:32:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3526 transitions. [2022-11-25 15:32:07,311 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3526 transitions. Word has length 25 [2022-11-25 15:32:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:07,312 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3526 transitions. [2022-11-25 15:32:07,313 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) [2022-11-25 15:32:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3526 transitions. [2022-11-25 15:32:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 15:32:07,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:07,315 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:07,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:32:07,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:32:07,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:32:07,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314357, now seen corresponding path program 2 times [2022-11-25 15:32:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:32:07,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456419781] [2022-11-25 15:32:07,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:32:07,535 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 [2022-11-25 15:32:07,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:32:07,536 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:32:07,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:32:11,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:32:11,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:32:11,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 15:32:11,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:11,731 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2022-11-25 15:32:11,732 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 [2022-11-25 15:32:16,834 INFO L321 Elim1Store]: treesize reduction 80, result has 31.0 percent of original size [2022-11-25 15:32:16,834 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 [2022-11-25 15:32:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-25 15:32:17,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:32:17,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:32:17,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456419781] [2022-11-25 15:32:17,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456419781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:17,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:17,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:32:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186585376] [2022-11-25 15:32:17,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:17,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:32:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:32:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:32:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:32:17,301 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) [2022-11-25 15:32:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:40,537 INFO L93 Difference]: Finished difference Result 3174 states and 3613 transitions. [2022-11-25 15:32:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:40,538 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 [2022-11-25 15:32:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:40,552 INFO L225 Difference]: With dead ends: 3174 [2022-11-25 15:32:40,553 INFO L226 Difference]: Without dead ends: 3174 [2022-11-25 15:32:40,553 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 [2022-11-25 15:32:40,554 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1831 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s 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, 23.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:40,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 3600 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2022-11-25 15:32:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-11-25 15:32:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2660. [2022-11-25 15:32:40,605 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) [2022-11-25 15:32:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3520 transitions. [2022-11-25 15:32:40,613 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3520 transitions. Word has length 37 [2022-11-25 15:32:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:40,614 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 3520 transitions. [2022-11-25 15:32:40,614 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) [2022-11-25 15:32:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3520 transitions. [2022-11-25 15:32:40,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 15:32:40,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:40,616 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:40,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:32:40,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:32:40,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:32:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1797314358, now seen corresponding path program 1 times [2022-11-25 15:32:40,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:32:40,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338976591] [2022-11-25 15:32:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:40,842 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 [2022-11-25 15:32:40,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:32:40,843 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:32:40,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:32:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:42,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 1538 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 15:32:42,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:32:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:43,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:32:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:47,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:32:47,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338976591] [2022-11-25 15:32:47,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338976591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:32:47,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:32:47,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-25 15:32:47,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058754165] [2022-11-25 15:32:47,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:32:47,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-25 15:32:47,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:32:47,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-25 15:32:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-11-25 15:32:47,797 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) [2022-11-25 15:33:08,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:08,442 INFO L93 Difference]: Finished difference Result 2760 states and 3642 transitions. [2022-11-25 15:33:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-25 15:33:08,444 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 [2022-11-25 15:33:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:08,472 INFO L225 Difference]: With dead ends: 2760 [2022-11-25 15:33:08,473 INFO L226 Difference]: Without dead ends: 2708 [2022-11-25 15:33:08,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=3512, Invalid=7830, Unknown=0, NotChecked=0, Total=11342 [2022-11-25 15:33:08,478 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 70 mSDsluCounter, 53882 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:08,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 56228 Invalid, 1718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-25 15:33:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-11-25 15:33:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2022-11-25 15:33:08,575 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) [2022-11-25 15:33:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3568 transitions. [2022-11-25 15:33:08,585 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3568 transitions. Word has length 37 [2022-11-25 15:33:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:08,585 INFO L495 AbstractCegarLoop]: Abstraction has 2708 states and 3568 transitions. [2022-11-25 15:33:08,586 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) [2022-11-25 15:33:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3568 transitions. [2022-11-25 15:33:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 15:33:08,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:08,597 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:08,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:33:08,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:33:08,826 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:33:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash 283062838, now seen corresponding path program 2 times [2022-11-25 15:33:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:33:08,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936539185] [2022-11-25 15:33:08,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:33:08,830 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 [2022-11-25 15:33:08,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:33:08,833 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:33:08,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:33:13,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:33:13,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:33:13,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 15:33:13,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:33:14,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:14,282 INFO L217 Elim1Store]: Index analysis took 197 ms [2022-11-25 15:33:14,284 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 [2022-11-25 15:33:14,753 INFO L321 Elim1Store]: treesize reduction 420, result has 11.8 percent of original size [2022-11-25 15:33:14,754 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 [2022-11-25 15:33:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:33:24,598 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 [2022-11-25 15:33:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2022-11-25 15:33:24,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:33:24,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:33:24,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936539185] [2022-11-25 15:33:24,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936539185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:24,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:24,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369346419] [2022-11-25 15:33:24,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:24,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:24,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:33:24,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:24,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:24,678 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) [2022-11-25 15:33:51,213 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] [2022-11-25 15:33:57,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:34:00,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 15:34:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:34:14,622 INFO L93 Difference]: Finished difference Result 4411 states and 5046 transitions. [2022-11-25 15:34:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:34:14,623 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 [2022-11-25 15:34:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:34:14,633 INFO L225 Difference]: With dead ends: 4411 [2022-11-25 15:34:14,634 INFO L226 Difference]: Without dead ends: 4411 [2022-11-25 15:34:14,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:34:14,635 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 3651 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 4200 mSolverCounterSat, 27 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 4230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 4200 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:34:14,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3654 Valid, 3188 Invalid, 4230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 4200 Invalid, 3 Unknown, 0 Unchecked, 49.7s Time] [2022-11-25 15:34:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-11-25 15:34:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 3345. [2022-11-25 15:34:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3345 states, 2185 states have (on average 2.0517162471395882) internal successors, (4483), 3161 states have internal predecessors, (4483), 181 states have call successors, (181), 58 states have call predecessors, (181), 57 states have return successors, (168), 142 states have call predecessors, (168), 158 states have call successors, (168) [2022-11-25 15:34:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 4832 transitions. [2022-11-25 15:34:14,717 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 4832 transitions. Word has length 61 [2022-11-25 15:34:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:34:14,718 INFO L495 AbstractCegarLoop]: Abstraction has 3345 states and 4832 transitions. [2022-11-25 15:34:14,718 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) [2022-11-25 15:34:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 4832 transitions. [2022-11-25 15:34:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 15:34:14,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:34:14,720 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:34:14,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:34:14,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:34:14,943 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:34:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:34:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1440500246, now seen corresponding path program 1 times [2022-11-25 15:34:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:34:14,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567904135] [2022-11-25 15:34:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:34:14,946 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 [2022-11-25 15:34:14,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:34:14,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:34:14,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:34:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:34:16,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-25 15:34:16,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:34:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:20,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:34:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:34:35,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:34:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567904135] [2022-11-25 15:34:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567904135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:34:35,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:34:35,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-11-25 15:34:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581076142] [2022-11-25 15:34:35,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:34:35,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-11-25 15:34:35,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:34:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-11-25 15:34:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-11-25 15:34:35,241 INFO L87 Difference]: Start difference. First operand 3345 states and 4832 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) [2022-11-25 15:36:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:14,623 INFO L93 Difference]: Finished difference Result 3613 states and 5146 transitions. [2022-11-25 15:36:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-11-25 15:36:14,624 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 [2022-11-25 15:36:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:14,634 INFO L225 Difference]: With dead ends: 3613 [2022-11-25 15:36:14,635 INFO L226 Difference]: Without dead ends: 3465 [2022-11-25 15:36:14,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3587 ImplicationChecksByTransitivity, 94.3s TimeCoverageRelationStatistics Valid=13940, Invalid=32070, Unknown=0, NotChecked=0, Total=46010 [2022-11-25 15:36:14,647 INFO L413 NwaCegarLoop]: 2354 mSDtfsCounter, 144 mSDsluCounter, 112803 mSDsCounter, 0 mSdLazyCounter, 6121 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 115157 SdHoareTripleChecker+Invalid, 6285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 6121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:14,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 115157 Invalid, 6285 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [164 Valid, 6121 Invalid, 0 Unknown, 0 Unchecked, 20.1s Time] [2022-11-25 15:36:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2022-11-25 15:36:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3465. [2022-11-25 15:36:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3465 states, 2305 states have (on average 1.9969631236442515) internal successors, (4603), 3281 states have internal predecessors, (4603), 181 states have call successors, (181), 58 states have call predecessors, (181), 57 states have return successors, (168), 142 states have call predecessors, (168), 158 states have call successors, (168) [2022-11-25 15:36:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 4952 transitions. [2022-11-25 15:36:14,718 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 4952 transitions. Word has length 63 [2022-11-25 15:36:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:14,719 INFO L495 AbstractCegarLoop]: Abstraction has 3465 states and 4952 transitions. [2022-11-25 15:36:14,720 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) [2022-11-25 15:36:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 4952 transitions. [2022-11-25 15:36:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 15:36:14,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:14,721 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:14,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:14,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:36:14,934 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:36:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:14,935 INFO L85 PathProgramCache]: Analyzing trace with hash -387940330, now seen corresponding path program 2 times [2022-11-25 15:36:14,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:14,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196804439] [2022-11-25 15:36:14,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:36:14,938 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 [2022-11-25 15:36:14,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:14,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:36:14,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:36:17,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:36:17,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:17,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 15:36:17,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:17,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:18,168 INFO L321 Elim1Store]: treesize reduction 154, result has 21.0 percent of original size [2022-11-25 15:36:18,168 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 [2022-11-25 15:36:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:36:25,061 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-25 15:36:25,061 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 [2022-11-25 15:36:26,217 INFO L321 Elim1Store]: treesize reduction 78, result has 22.0 percent of original size [2022-11-25 15:36:26,217 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 [2022-11-25 15:36:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2022-11-25 15:36:26,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:36:26,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:36:26,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196804439] [2022-11-25 15:36:26,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196804439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:26,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:26,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:36:26,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893916257] [2022-11-25 15:36:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:36:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:36:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:36:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:36:26,465 INFO L87 Difference]: Start difference. First operand 3465 states and 4952 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) [2022-11-25 15:36:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:58,949 INFO L93 Difference]: Finished difference Result 3983 states and 5056 transitions. [2022-11-25 15:36:58,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:36:58,950 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 [2022-11-25 15:36:58,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:36:58,960 INFO L225 Difference]: With dead ends: 3983 [2022-11-25 15:36:58,960 INFO L226 Difference]: Without dead ends: 3983 [2022-11-25 15:36:58,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:36:58,961 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 1906 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 2539 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s 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, 32.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:36:58,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 3864 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2539 Invalid, 0 Unknown, 0 Unchecked, 32.4s Time] [2022-11-25 15:36:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2022-11-25 15:36:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3462. [2022-11-25 15:36:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 2305 states have (on average 1.9956616052060738) internal successors, (4600), 3278 states have internal predecessors, (4600), 181 states have call successors, (181), 58 states have call predecessors, (181), 57 states have return successors, (168), 142 states have call predecessors, (168), 158 states have call successors, (168) [2022-11-25 15:36:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 4949 transitions. [2022-11-25 15:36:59,033 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 4949 transitions. Word has length 111 [2022-11-25 15:36:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:36:59,034 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 4949 transitions. [2022-11-25 15:36:59,034 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) [2022-11-25 15:36:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 4949 transitions. [2022-11-25 15:36:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 15:36:59,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:36:59,036 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:59,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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)] Ended with exit code 0 [2022-11-25 15:36:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:36:59,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [FloppyProcessQueuedRequestsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, FloppyProcessQueuedRequestsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 952 more)] === [2022-11-25 15:36:59,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -387940329, now seen corresponding path program 1 times [2022-11-25 15:36:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 15:36:59,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840373435] [2022-11-25 15:36:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:59,255 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 [2022-11-25 15:36:59,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 15:36:59,256 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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) [2022-11-25 15:36:59,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa7a4fdc-c2ac-4617-8c53-af4cc68d87b3/bin/uautomizer-ZsLfNo2U6R/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 [2022-11-25 15:37:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:37:01,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-25 15:37:01,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:37:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:37:15,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:37:20,414 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 290 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 15:38:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:38:10,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 15:38:10,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840373435] [2022-11-25 15:38:10,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840373435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:38:10,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 15:38:10,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 194 [2022-11-25 15:38:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400246885] [2022-11-25 15:38:10,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 15:38:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-11-25 15:38:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 15:38:10,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-11-25 15:38:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9601, Invalid=27841, Unknown=0, NotChecked=0, Total=37442 [2022-11-25 15:38:10,954 INFO L87 Difference]: Start difference. First operand 3462 states and 4949 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)