./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:57:50,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:57:50,321 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:57:50,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:57:50,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:57:50,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:57:50,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:57:50,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:57:50,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:57:50,353 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:57:50,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:57:50,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:57:50,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:57:50,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:57:50,356 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:57:50,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:57:50,357 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:57:50,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:57:50,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:57:50,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:57:50,359 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:57:50,359 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:57:50,360 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:57:50,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:57:50,360 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:57:50,361 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:57:50,361 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:57:50,362 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:57:50,362 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:57:50,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:57:50,363 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:57:50,363 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:57:50,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:57:50,364 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:57:50,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:57:50,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:57:50,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:57:50,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:57:50,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:57:50,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:57:50,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:57:50,367 INFO L153 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_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c [2023-11-29 04:57:50,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:57:50,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:57:50,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:57:50,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:57:50,628 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:57:50,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2023-11-29 04:57:53,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:57:53,670 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:57:53,671 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2023-11-29 04:57:53,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data/da7ceb768/628ec568facc4ff1b7d612178a89a098/FLAGec090c791 [2023-11-29 04:57:53,698 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data/da7ceb768/628ec568facc4ff1b7d612178a89a098 [2023-11-29 04:57:53,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:57:53,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:57:53,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:53,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:57:53,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:57:53,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:53" (1/1) ... [2023-11-29 04:57:53,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68da163a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:53, skipping insertion in model container [2023-11-29 04:57:53,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:53" (1/1) ... [2023-11-29 04:57:53,753 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:57:54,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:54,065 ERROR L324 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) [2023-11-29 04:57:54,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e386d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:54, skipping insertion in model container [2023-11-29 04:57:54,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:54,066 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:57:54,067 INFO L158 Benchmark]: Toolchain (without parser) took 364.69ms. Allocated memory is still 157.3MB. Free memory was 115.5MB in the beginning and 101.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:57:54,068 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 157.3MB. Free memory was 127.7MB in the beginning and 127.7MB in the end (delta: 84.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:57:54,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.49ms. Allocated memory is still 157.3MB. Free memory was 115.5MB in the beginning and 101.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:57:54,070 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 157.3MB. Free memory was 127.7MB in the beginning and 127.7MB in the end (delta: 84.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.49ms. Allocated memory is still 157.3MB. Free memory was 115.5MB in the beginning and 101.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:57:55,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:57:55,887 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:57:55,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:57:55,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:57:55,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:57:55,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:57:55,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:57:55,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:57:55,921 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:57:55,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:57:55,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:57:55,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:57:55,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:57:55,924 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:57:55,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:57:55,925 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:57:55,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:57:55,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:57:55,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:57:55,927 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:57:55,927 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:57:55,928 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:57:55,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:57:55,929 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:57:55,929 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:57:55,929 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:57:55,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:57:55,930 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:57:55,930 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:57:55,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:57:55,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:57:55,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:57:55,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:57:55,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:57:55,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:57:55,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:57:55,932 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:57:55,933 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:57:55,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:57:55,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:57:55,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:57:55,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:57:55,934 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:57:55,934 INFO L153 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_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43f8392da149a5e37da963296eece1aed541fa66405941aca1908b78e9471c4c [2023-11-29 04:57:56,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:57:56,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:57:56,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:57:56,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:57:56,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:57:56,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2023-11-29 04:57:59,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:57:59,382 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:57:59,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/sv-benchmarks/c/ldv-memsafety/memleaks_test22_5.i [2023-11-29 04:57:59,398 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data/229f5eb5f/3307095805dd42ce8723bc40b837f36a/FLAG072e2156a [2023-11-29 04:57:59,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/data/229f5eb5f/3307095805dd42ce8723bc40b837f36a [2023-11-29 04:57:59,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:57:59,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:57:59,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:59,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:57:59,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:57:59,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:57:59,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b345ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59, skipping insertion in model container [2023-11-29 04:57:59,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:57:59,469 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:57:59,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:59,834 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:57:59,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:57:59,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:59,891 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:57:59,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:59,971 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:57:59,979 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:57:59,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59 WrapperNode [2023-11-29 04:57:59,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:59,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:57:59,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:57:59,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:57:59,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,035 INFO L138 Inliner]: procedures = 167, calls = 72, calls flagged for inlining = 24, calls inlined = 15, statements flattened = 104 [2023-11-29 04:58:00,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:58:00,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:58:00,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:58:00,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:58:00,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,058 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,081 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2023-11-29 04:58:00,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:58:00,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:58:00,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:58:00,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:58:00,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (1/1) ... [2023-11-29 04:58:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:58:00,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:58:00,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:58:00,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:58:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:58:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:58:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-29 04:58:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-29 04:58:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-29 04:58:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-29 04:58:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2023-11-29 04:58:00,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2023-11-29 04:58:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:58:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:58:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:58:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:58:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:58:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:58:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:58:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:58:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:58:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 04:58:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 04:58:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:58:00,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:58:00,323 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:58:00,325 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:58:00,655 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:58:00,697 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:58:00,697 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:58:00,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:58:00 BoogieIcfgContainer [2023-11-29 04:58:00,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:58:00,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:58:00,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:58:00,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:58:00,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:57:59" (1/3) ... [2023-11-29 04:58:00,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be71c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:58:00, skipping insertion in model container [2023-11-29 04:58:00,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:59" (2/3) ... [2023-11-29 04:58:00,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be71c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:58:00, skipping insertion in model container [2023-11-29 04:58:00,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:58:00" (3/3) ... [2023-11-29 04:58:00,705 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_5.i [2023-11-29 04:58:00,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:58:00,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-11-29 04:58:00,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:58:00,761 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;@66a0ef71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:58:00,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 04:58:00,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 59 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 04:58:00,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:00,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:00,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:00,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1590084452, now seen corresponding path program 1 times [2023-11-29 04:58:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:00,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551360920] [2023-11-29 04:58:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:00,787 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 [2023-11-29 04:58:00,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:00,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:00,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:58:00,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:00,954 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:01,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:01,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:01,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551360920] [2023-11-29 04:58:01,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551360920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:01,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:01,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:58:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835812391] [2023-11-29 04:58:01,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:01,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:58:01,043 INFO L87 Difference]: Start difference. First operand has 66 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 59 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-29 04:58:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:01,385 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2023-11-29 04:58:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 9 [2023-11-29 04:58:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:01,395 INFO L225 Difference]: With dead ends: 83 [2023-11-29 04:58:01,395 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 04:58:01,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:58:01,400 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 23 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:01,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 214 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:58:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 04:58:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2023-11-29 04:58:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 62 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 04:58:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2023-11-29 04:58:01,449 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 9 [2023-11-29 04:58:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:01,449 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2023-11-29 04:58:01,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-29 04:58:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2023-11-29 04:58:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 04:58:01,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:01,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:01,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:01,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:01,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:01,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1561455301, now seen corresponding path program 1 times [2023-11-29 04:58:01,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:01,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737406337] [2023-11-29 04:58:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:01,659 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 [2023-11-29 04:58:01,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:01,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:01,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:01,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:58:01,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:01,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:01,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:01,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:01,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737406337] [2023-11-29 04:58:01,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737406337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:01,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:01,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:58:01,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112694697] [2023-11-29 04:58:01,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:01,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:58:01,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:58:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:01,785 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-29 04:58:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:01,919 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2023-11-29 04:58:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:58:01,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2023-11-29 04:58:01,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:01,921 INFO L225 Difference]: With dead ends: 69 [2023-11-29 04:58:01,921 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 04:58:01,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:01,923 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:01,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 04:58:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2023-11-29 04:58:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.675) internal successors, (67), 60 states have internal predecessors, (67), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 04:58:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-11-29 04:58:01,932 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 9 [2023-11-29 04:58:01,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:01,932 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-11-29 04:58:01,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-29 04:58:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-11-29 04:58:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 04:58:01,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:01,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:01,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:02,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:02,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:02,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:02,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2047977645, now seen corresponding path program 1 times [2023-11-29 04:58:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:02,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847732930] [2023-11-29 04:58:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:02,138 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 [2023-11-29 04:58:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:02,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:02,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:02,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:58:02,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:02,231 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:02,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:02,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847732930] [2023-11-29 04:58:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847732930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:02,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:58:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803704886] [2023-11-29 04:58:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:58:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:58:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:58:02,355 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-29 04:58:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:02,706 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2023-11-29 04:58:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:02,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 10 [2023-11-29 04:58:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:02,708 INFO L225 Difference]: With dead ends: 68 [2023-11-29 04:58:02,708 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 04:58:02,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:58:02,710 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:02,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 265 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:58:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 04:58:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2023-11-29 04:58:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.65) internal successors, (66), 59 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 04:58:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2023-11-29 04:58:02,718 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 10 [2023-11-29 04:58:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:02,719 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2023-11-29 04:58:02,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-29 04:58:02,719 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2023-11-29 04:58:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 04:58:02,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:02,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:02,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:58:02,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:02,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:02,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:02,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1316956405, now seen corresponding path program 1 times [2023-11-29 04:58:02,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130518073] [2023-11-29 04:58:02,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:02,926 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 [2023-11-29 04:58:02,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:02,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:02,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:03,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:58:03,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:03,025 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:03,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130518073] [2023-11-29 04:58:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130518073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:03,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:58:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707210585] [2023-11-29 04:58:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:03,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:58:03,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:58:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:03,028 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:03,156 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2023-11-29 04:58:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:58:03,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-29 04:58:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:03,159 INFO L225 Difference]: With dead ends: 68 [2023-11-29 04:58:03,159 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 04:58:03,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:03,160 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:03,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 222 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 04:58:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2023-11-29 04:58:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.625) internal successors, (65), 59 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 04:58:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2023-11-29 04:58:03,168 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 13 [2023-11-29 04:58:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:03,168 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2023-11-29 04:58:03,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2023-11-29 04:58:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 04:58:03,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:03,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:03,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 04:58:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:03,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:03,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1513469910, now seen corresponding path program 1 times [2023-11-29 04:58:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:03,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447061326] [2023-11-29 04:58:03,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:03,374 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 [2023-11-29 04:58:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:03,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:03,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:03,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:58:03,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:03,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:03,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:03,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447061326] [2023-11-29 04:58:03,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447061326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:03,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:03,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:58:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39114937] [2023-11-29 04:58:03,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:58:03,514 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:03,684 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-11-29 04:58:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:03,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-29 04:58:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:03,687 INFO L225 Difference]: With dead ends: 80 [2023-11-29 04:58:03,687 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 04:58:03,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:58:03,689 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:03,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 287 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 04:58:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2023-11-29 04:58:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 64 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:58:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2023-11-29 04:58:03,698 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 13 [2023-11-29 04:58:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:03,698 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2023-11-29 04:58:03,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2023-11-29 04:58:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 04:58:03,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:03,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:03,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 04:58:03,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:03,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:03,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1379134745, now seen corresponding path program 1 times [2023-11-29 04:58:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:03,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856320551] [2023-11-29 04:58:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:03,901 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 [2023-11-29 04:58:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:03,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:03,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:03,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:58:03,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:03,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:03,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:03,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856320551] [2023-11-29 04:58:03,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856320551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:03,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:03,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:58:03,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236496464] [2023-11-29 04:58:03,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:58:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:58:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:03,994 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-29 04:58:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:04,069 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2023-11-29 04:58:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:04,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 14 [2023-11-29 04:58:04,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:04,070 INFO L225 Difference]: With dead ends: 74 [2023-11-29 04:58:04,070 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 04:58:04,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:04,072 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:04,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 119 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 04:58:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-29 04:58:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 65 states have internal predecessors, (70), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:58:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2023-11-29 04:58:04,080 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 14 [2023-11-29 04:58:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:04,080 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2023-11-29 04:58:04,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-29 04:58:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2023-11-29 04:58:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 04:58:04,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:04,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:04,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 04:58:04,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:04,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 146174100, now seen corresponding path program 1 times [2023-11-29 04:58:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982292868] [2023-11-29 04:58:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:04,283 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 [2023-11-29 04:58:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:04,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:04,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:04,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:58:04,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:04,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:04,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982292868] [2023-11-29 04:58:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982292868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:04,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:58:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708341135] [2023-11-29 04:58:04,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:04,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:58:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:04,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:58:04,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:58:04,468 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-29 04:58:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:04,638 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2023-11-29 04:58:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 15 [2023-11-29 04:58:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:04,639 INFO L225 Difference]: With dead ends: 77 [2023-11-29 04:58:04,639 INFO L226 Difference]: Without dead ends: 77 [2023-11-29 04:58:04,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:58:04,641 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:04,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 294 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-29 04:58:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-29 04:58:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 68 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:58:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2023-11-29 04:58:04,646 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 15 [2023-11-29 04:58:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:04,646 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2023-11-29 04:58:04,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2023-11-29 04:58:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2023-11-29 04:58:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 04:58:04,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:04,648 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:04,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 04:58:04,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:04,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:04,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1528375398, now seen corresponding path program 1 times [2023-11-29 04:58:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731029422] [2023-11-29 04:58:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:04,850 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 [2023-11-29 04:58:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:04,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:04,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:04,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:58:04,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:04,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:04,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:04,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731029422] [2023-11-29 04:58:04,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1731029422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:04,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:04,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:58:04,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089569509] [2023-11-29 04:58:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:04,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:04,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:04,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:58:04,982 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:05,124 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2023-11-29 04:58:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-29 04:58:05,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:05,125 INFO L225 Difference]: With dead ends: 88 [2023-11-29 04:58:05,125 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 04:58:05,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:58:05,126 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 8 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:05,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 296 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 04:58:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2023-11-29 04:58:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 72 states have internal predecessors, (77), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 04:58:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2023-11-29 04:58:05,135 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 19 [2023-11-29 04:58:05,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:05,135 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2023-11-29 04:58:05,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2023-11-29 04:58:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 04:58:05,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:05,137 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:05,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 04:58:05,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:05,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:05,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1145869863, now seen corresponding path program 2 times [2023-11-29 04:58:05,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:05,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840672681] [2023-11-29 04:58:05,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:58:05,339 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 [2023-11-29 04:58:05,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:05,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:05,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:05,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:58:05,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:58:05,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:58:05,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:05,408 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:58:05,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:05,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840672681] [2023-11-29 04:58:05,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840672681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:05,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:05,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:58:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395739653] [2023-11-29 04:58:05,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:58:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:58:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:58:05,489 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-11-29 04:58:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:05,823 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2023-11-29 04:58:05,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:58:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 18 [2023-11-29 04:58:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:05,825 INFO L225 Difference]: With dead ends: 82 [2023-11-29 04:58:05,825 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 04:58:05,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:58:05,826 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 21 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:05,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 265 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:58:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 04:58:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 04:58:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 71 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 04:58:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2023-11-29 04:58:05,833 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 18 [2023-11-29 04:58:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:05,833 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2023-11-29 04:58:05,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-11-29 04:58:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2023-11-29 04:58:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 04:58:05,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:05,834 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:05,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 04:58:06,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:06,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:06,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1145869864, now seen corresponding path program 1 times [2023-11-29 04:58:06,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:06,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263776697] [2023-11-29 04:58:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:06,036 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 [2023-11-29 04:58:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:06,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:06,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:06,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:58:06,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:06,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:06,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:06,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263776697] [2023-11-29 04:58:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263776697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:06,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:06,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 04:58:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111544909] [2023-11-29 04:58:06,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:06,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:58:06,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:58:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:58:06,412 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2023-11-29 04:58:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:06,779 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2023-11-29 04:58:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:58:06,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 18 [2023-11-29 04:58:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:06,781 INFO L225 Difference]: With dead ends: 88 [2023-11-29 04:58:06,781 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 04:58:06,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:58:06,781 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 14 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:06,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 522 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:58:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 04:58:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-29 04:58:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 77 states have internal predecessors, (82), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-29 04:58:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2023-11-29 04:58:06,787 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 18 [2023-11-29 04:58:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:06,787 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2023-11-29 04:58:06,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2023-11-29 04:58:06,787 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2023-11-29 04:58:06,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 04:58:06,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:06,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:06,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 04:58:06,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:06,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:06,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:06,989 INFO L85 PathProgramCache]: Analyzing trace with hash 929064606, now seen corresponding path program 1 times [2023-11-29 04:58:06,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:06,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735405712] [2023-11-29 04:58:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:06,990 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 [2023-11-29 04:58:06,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:06,990 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:06,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:07,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:58:07,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:58:07,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:07,078 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735405712] [2023-11-29 04:58:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735405712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:07,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:07,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:58:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004013150] [2023-11-29 04:58:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:07,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:58:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:58:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:07,079 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:58:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:07,212 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2023-11-29 04:58:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-29 04:58:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:07,214 INFO L225 Difference]: With dead ends: 93 [2023-11-29 04:58:07,214 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 04:58:07,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:07,215 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 25 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 110 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 04:58:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2023-11-29 04:58:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 65 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2023-11-29 04:58:07,219 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 22 [2023-11-29 04:58:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:07,219 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2023-11-29 04:58:07,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:58:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2023-11-29 04:58:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 04:58:07,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:07,220 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:07,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 04:58:07,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:07,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:07,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:07,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1008365816, now seen corresponding path program 2 times [2023-11-29 04:58:07,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:07,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310107969] [2023-11-29 04:58:07,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:58:07,422 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 [2023-11-29 04:58:07,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:07,423 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:07,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:07,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:58:07,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:58:07,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:58:07,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:07,501 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-29 04:58:07,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:07,693 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310107969] [2023-11-29 04:58:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310107969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:07,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:07,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:58:07,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24881320] [2023-11-29 04:58:07,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:07,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:58:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:58:07,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:58:07,695 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2023-11-29 04:58:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:08,069 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2023-11-29 04:58:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:58:08,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 24 [2023-11-29 04:58:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:08,075 INFO L225 Difference]: With dead ends: 71 [2023-11-29 04:58:08,075 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 04:58:08,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:58:08,076 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 19 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:08,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 323 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:58:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 04:58:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-29 04:58:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 64 states have internal predecessors, (69), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2023-11-29 04:58:08,080 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 24 [2023-11-29 04:58:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:08,080 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2023-11-29 04:58:08,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2023-11-29 04:58:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2023-11-29 04:58:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 04:58:08,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:08,082 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:08,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 04:58:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:08,284 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:08,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1223444465, now seen corresponding path program 1 times [2023-11-29 04:58:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747913317] [2023-11-29 04:58:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:08,286 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 [2023-11-29 04:58:08,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:08,287 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:08,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:08,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:58:08,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:08,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:09,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:09,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747913317] [2023-11-29 04:58:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747913317] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:09,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 04:58:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666058724] [2023-11-29 04:58:09,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:09,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:58:09,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:58:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:58:09,120 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:09,928 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2023-11-29 04:58:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:58:09,929 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-29 04:58:09,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:09,930 INFO L225 Difference]: With dead ends: 77 [2023-11-29 04:58:09,930 INFO L226 Difference]: Without dead ends: 77 [2023-11-29 04:58:09,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:58:09,931 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:09,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 769 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:58:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-29 04:58:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-29 04:58:09,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 70 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2023-11-29 04:58:09,935 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 27 [2023-11-29 04:58:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:09,936 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2023-11-29 04:58:09,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 26 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2023-11-29 04:58:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 04:58:09,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:09,937 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:09,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 04:58:10,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:10,141 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:10,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash 676641583, now seen corresponding path program 2 times [2023-11-29 04:58:10,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:10,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186161434] [2023-11-29 04:58:10,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:58:10,143 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 [2023-11-29 04:58:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:10,144 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:10,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:10,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 04:58:10,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:58:10,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:58:10,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:10,269 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:10,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:10,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186161434] [2023-11-29 04:58:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186161434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:10,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:10,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:58:10,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025690285] [2023-11-29 04:58:10,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:10,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:58:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:58:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:58:10,386 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:10,719 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2023-11-29 04:58:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:58:10,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-11-29 04:58:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:10,720 INFO L225 Difference]: With dead ends: 75 [2023-11-29 04:58:10,720 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 04:58:10,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:58:10,721 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:10,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 252 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:58:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 04:58:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-29 04:58:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 68 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2023-11-29 04:58:10,725 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 33 [2023-11-29 04:58:10,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:10,725 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2023-11-29 04:58:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:10,725 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2023-11-29 04:58:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 04:58:10,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:10,726 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:10,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 04:58:10,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:10,927 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:10,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 676641584, now seen corresponding path program 1 times [2023-11-29 04:58:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729656978] [2023-11-29 04:58:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:10,928 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 [2023-11-29 04:58:10,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:10,929 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:10,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:11,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:58:11,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:11,089 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:11,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:11,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729656978] [2023-11-29 04:58:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729656978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:11,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:58:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902350036] [2023-11-29 04:58:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:11,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:58:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:58:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:58:11,314 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:11,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:11,686 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2023-11-29 04:58:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:58:11,686 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-11-29 04:58:11,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:11,687 INFO L225 Difference]: With dead ends: 73 [2023-11-29 04:58:11,687 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 04:58:11,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:58:11,688 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 22 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:11,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 328 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:58:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 04:58:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 04:58:11,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 66 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2023-11-29 04:58:11,692 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 33 [2023-11-29 04:58:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:11,692 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2023-11-29 04:58:11,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2023-11-29 04:58:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 04:58:11,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:11,693 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:11,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:11,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:11,893 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1986672176, now seen corresponding path program 1 times [2023-11-29 04:58:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:11,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699320365] [2023-11-29 04:58:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:11,894 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 [2023-11-29 04:58:11,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:11,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:11,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:12,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:58:12,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:12,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:12,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:12,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699320365] [2023-11-29 04:58:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699320365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:58:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347414657] [2023-11-29 04:58:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:12,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:12,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:12,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:58:12,086 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:12,195 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2023-11-29 04:58:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:58:12,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-29 04:58:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:12,196 INFO L225 Difference]: With dead ends: 73 [2023-11-29 04:58:12,196 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 04:58:12,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:58:12,197 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:12,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 229 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 04:58:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 04:58:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.320754716981132) internal successors, (70), 66 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2023-11-29 04:58:12,201 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 34 [2023-11-29 04:58:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:12,201 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2023-11-29 04:58:12,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2023-11-29 04:58:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 04:58:12,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:12,202 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:12,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 04:58:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:12,403 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:12,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1037096892, now seen corresponding path program 1 times [2023-11-29 04:58:12,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979742369] [2023-11-29 04:58:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:12,404 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 [2023-11-29 04:58:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:12,405 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:12,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 04:58:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:12,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:58:12,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:12,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:12,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979742369] [2023-11-29 04:58:12,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979742369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:12,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:12,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:58:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201367665] [2023-11-29 04:58:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:12,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:58:12,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:58:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:58:12,646 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:12,802 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2023-11-29 04:58:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:12,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-29 04:58:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:12,803 INFO L225 Difference]: With dead ends: 73 [2023-11-29 04:58:12,803 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 04:58:12,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:58:12,804 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 12 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:12,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 268 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:58:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 04:58:12,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-29 04:58:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 65 states have internal predecessors, (69), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2023-11-29 04:58:12,807 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 36 [2023-11-29 04:58:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:12,808 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2023-11-29 04:58:12,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2023-11-29 04:58:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:58:12,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:12,808 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:12,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:13,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:13,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:13,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1596774223, now seen corresponding path program 1 times [2023-11-29 04:58:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096556926] [2023-11-29 04:58:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:13,010 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 [2023-11-29 04:58:13,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:13,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:13,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 04:58:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:13,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:58:13,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:13,207 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:13,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:13,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:13,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096556926] [2023-11-29 04:58:13,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096556926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:13,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:13,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:58:13,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147173011] [2023-11-29 04:58:13,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:13,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:58:13,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:58:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:58:13,384 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:13,871 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2023-11-29 04:58:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:58:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2023-11-29 04:58:13,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:13,872 INFO L225 Difference]: With dead ends: 104 [2023-11-29 04:58:13,873 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 04:58:13,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:58:13,874 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 88 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:13,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 206 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:58:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 04:58:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 87. [2023-11-29 04:58:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 76 states have internal predecessors, (85), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2023-11-29 04:58:13,878 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 42 [2023-11-29 04:58:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:13,879 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2023-11-29 04:58:13,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2023-11-29 04:58:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:58:13,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:13,880 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:13,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 04:58:14,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:14,081 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:14,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1596774224, now seen corresponding path program 1 times [2023-11-29 04:58:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:14,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064844741] [2023-11-29 04:58:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:14,082 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 [2023-11-29 04:58:14,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:14,082 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:14,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Waiting until timeout for monitored process [2023-11-29 04:58:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:14,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 04:58:14,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:14,283 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:14,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:14,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064844741] [2023-11-29 04:58:14,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064844741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:14,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:14,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:58:14,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481389439] [2023-11-29 04:58:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:14,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:58:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:58:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:58:14,570 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:15,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:15,096 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2023-11-29 04:58:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:58:15,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2023-11-29 04:58:15,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:15,098 INFO L225 Difference]: With dead ends: 107 [2023-11-29 04:58:15,098 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 04:58:15,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:58:15,098 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 95 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:15,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 302 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:58:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 04:58:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2023-11-29 04:58:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 80 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2023-11-29 04:58:15,103 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 42 [2023-11-29 04:58:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:15,103 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2023-11-29 04:58:15,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:15,104 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2023-11-29 04:58:15,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:58:15,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:15,104 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:15,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Ended with exit code 0 [2023-11-29 04:58:15,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:15,305 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:15,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1553037762, now seen corresponding path program 1 times [2023-11-29 04:58:15,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:15,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020665332] [2023-11-29 04:58:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:15,305 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 [2023-11-29 04:58:15,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:15,306 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:15,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Waiting until timeout for monitored process [2023-11-29 04:58:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:15,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:58:15,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:15,555 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:15,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:15,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:15,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020665332] [2023-11-29 04:58:15,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020665332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:15,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:15,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:58:15,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337357521] [2023-11-29 04:58:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:15,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:58:15,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:58:15,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:58:15,720 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 12 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:16,203 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2023-11-29 04:58:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:58:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2023-11-29 04:58:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:16,204 INFO L225 Difference]: With dead ends: 107 [2023-11-29 04:58:16,204 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 04:58:16,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:58:16,205 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 76 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:16,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 209 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:58:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 04:58:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2023-11-29 04:58:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 79 states have internal predecessors, (92), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2023-11-29 04:58:16,210 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 45 [2023-11-29 04:58:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:16,210 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2023-11-29 04:58:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2023-11-29 04:58:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:58:16,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:16,211 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:16,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Ended with exit code 0 [2023-11-29 04:58:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:16,411 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:16,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1553037761, now seen corresponding path program 1 times [2023-11-29 04:58:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925024352] [2023-11-29 04:58:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:16,413 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 [2023-11-29 04:58:16,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:16,413 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:16,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (22)] Waiting until timeout for monitored process [2023-11-29 04:58:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:16,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 04:58:16,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:16,647 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:16,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:16,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925024352] [2023-11-29 04:58:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925024352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 04:58:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768991192] [2023-11-29 04:58:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:58:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:58:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:58:16,956 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:17,586 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2023-11-29 04:58:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:58:17,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2023-11-29 04:58:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:17,587 INFO L225 Difference]: With dead ends: 92 [2023-11-29 04:58:17,588 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 04:58:17,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:58:17,588 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 114 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:17,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 268 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:17,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 04:58:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2023-11-29 04:58:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 79 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2023-11-29 04:58:17,591 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 45 [2023-11-29 04:58:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:17,592 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2023-11-29 04:58:17,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:17,592 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2023-11-29 04:58:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 04:58:17,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:17,592 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:17,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (22)] Ended with exit code 0 [2023-11-29 04:58:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:17,793 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:17,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2115529938, now seen corresponding path program 1 times [2023-11-29 04:58:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:17,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172885496] [2023-11-29 04:58:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:17,794 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 [2023-11-29 04:58:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:17,795 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:17,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (23)] Waiting until timeout for monitored process [2023-11-29 04:58:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:18,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:58:18,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:18,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:18,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172885496] [2023-11-29 04:58:18,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172885496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:18,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:58:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877043778] [2023-11-29 04:58:18,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:58:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:58:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:58:18,442 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:19,086 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2023-11-29 04:58:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:58:19,087 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2023-11-29 04:58:19,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:19,088 INFO L225 Difference]: With dead ends: 91 [2023-11-29 04:58:19,088 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 04:58:19,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:58:19,089 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 132 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:19,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 287 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 04:58:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2023-11-29 04:58:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 79 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-29 04:58:19,092 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 47 [2023-11-29 04:58:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:19,092 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-29 04:58:19,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-29 04:58:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:58:19,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:19,093 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:19,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (23)] Ended with exit code 0 [2023-11-29 04:58:19,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:19,294 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:19,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash 597782196, now seen corresponding path program 1 times [2023-11-29 04:58:19,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:19,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931226414] [2023-11-29 04:58:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:19,295 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 [2023-11-29 04:58:19,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:19,296 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:19,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (24)] Waiting until timeout for monitored process [2023-11-29 04:58:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:19,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 123 conjunts are in the unsatisfiable core [2023-11-29 04:58:19,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:19,776 INFO L378 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 11 treesize of output 7 [2023-11-29 04:58:19,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:19,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:19,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:19,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:20,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:58:21,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 04:58:21,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:58:21,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2023-11-29 04:58:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:21,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:22,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931226414] [2023-11-29 04:58:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931226414] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:58:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [589399554] [2023-11-29 04:58:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:22,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:58:22,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:58:22,850 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:58:22,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-29 04:58:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:23,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 04:58:23,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:23,616 INFO L378 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 11 treesize of output 7 [2023-11-29 04:58:23,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:23,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:58:24,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-11-29 04:58:24,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:58:24,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 21 [2023-11-29 04:58:24,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:58:24,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 26 [2023-11-29 04:58:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:24,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:26,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [589399554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:58:26,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39] total 42 [2023-11-29 04:58:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138557290] [2023-11-29 04:58:26,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 04:58:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 04:58:26,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=3541, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 04:58:26,933 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 43 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:32,791 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2023-11-29 04:58:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 04:58:32,791 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2023-11-29 04:58:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:32,792 INFO L225 Difference]: With dead ends: 92 [2023-11-29 04:58:32,792 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 04:58:32,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=547, Invalid=7825, Unknown=0, NotChecked=0, Total=8372 [2023-11-29 04:58:32,795 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 145 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:32,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 542 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 04:58:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 04:58:32,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2023-11-29 04:58:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 79 states have internal predecessors, (87), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:58:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2023-11-29 04:58:32,799 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 50 [2023-11-29 04:58:32,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:32,799 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2023-11-29 04:58:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2023-11-29 04:58:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:58:32,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:32,800 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:32,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (24)] Ended with exit code 0 [2023-11-29 04:58:33,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-11-29 04:58:33,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:58:33,201 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:33,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash -850393525, now seen corresponding path program 1 times [2023-11-29 04:58:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:33,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16628211] [2023-11-29 04:58:33,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:33,202 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 [2023-11-29 04:58:33,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:33,203 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:33,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (26)] Waiting until timeout for monitored process [2023-11-29 04:58:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:33,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:58:33,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:33,470 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:33,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:33,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16628211] [2023-11-29 04:58:33,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16628211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:33,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:33,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2023-11-29 04:58:33,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739016914] [2023-11-29 04:58:33,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:33,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:58:33,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:58:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:58:33,799 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:58:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:34,453 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2023-11-29 04:58:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:58:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-11-29 04:58:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:34,454 INFO L225 Difference]: With dead ends: 122 [2023-11-29 04:58:34,454 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 04:58:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:58:34,455 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 112 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:34,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 242 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:34,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 04:58:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2023-11-29 04:58:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 81 states have (on average 1.271604938271605) internal successors, (103), 93 states have internal predecessors, (103), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 116 transitions. [2023-11-29 04:58:34,459 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 116 transitions. Word has length 52 [2023-11-29 04:58:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:34,460 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 116 transitions. [2023-11-29 04:58:34,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:58:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 116 transitions. [2023-11-29 04:58:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:58:34,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:34,460 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:34,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (26)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:34,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:34,661 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:34,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:34,661 INFO L85 PathProgramCache]: Analyzing trace with hash -850393524, now seen corresponding path program 1 times [2023-11-29 04:58:34,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:34,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174762090] [2023-11-29 04:58:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:34,662 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 [2023-11-29 04:58:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:34,662 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:34,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (27)] Waiting until timeout for monitored process [2023-11-29 04:58:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:34,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 04:58:34,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:34,939 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:35,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:35,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:35,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174762090] [2023-11-29 04:58:35,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174762090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:35,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:35,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:58:35,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17262097] [2023-11-29 04:58:35,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:35,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:58:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:58:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:58:35,288 INFO L87 Difference]: Start difference. First operand 104 states and 116 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:58:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:35,879 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2023-11-29 04:58:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:58:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-11-29 04:58:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:35,880 INFO L225 Difference]: With dead ends: 104 [2023-11-29 04:58:35,881 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 04:58:35,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:58:35,881 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:35,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 392 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 04:58:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-11-29 04:58:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 91 states have internal predecessors, (99), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2023-11-29 04:58:35,885 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 52 [2023-11-29 04:58:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:35,885 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2023-11-29 04:58:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:58:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2023-11-29 04:58:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:58:35,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:35,886 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:35,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (27)] Ended with exit code 0 [2023-11-29 04:58:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:36,087 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:36,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1351378963, now seen corresponding path program 1 times [2023-11-29 04:58:36,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:36,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529749189] [2023-11-29 04:58:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:36,088 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 [2023-11-29 04:58:36,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:36,089 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:36,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (28)] Waiting until timeout for monitored process [2023-11-29 04:58:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:36,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 123 conjunts are in the unsatisfiable core [2023-11-29 04:58:36,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:36,521 INFO L378 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 11 treesize of output 7 [2023-11-29 04:58:36,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:36,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:37,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:58:37,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2023-11-29 04:58:38,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:58:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:38,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:38,513 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2149 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_2149 (let ((.cse2 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32)))) (store (let ((.cse1 (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|))) (store (let ((.cse0 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32)))) (store (store (select |c_#memory_$Pointer$#1.base| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (select v_ArrVal_2149 |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|)) .cse0 (select v_ArrVal_2149 .cse0))) .cse1 (select v_ArrVal_2149 .cse1))) .cse2 (select v_ArrVal_2149 .cse2))))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| v_ArrVal_2149) |c_ldv_kobject_put_ldv_kref_sub_~kref#1.base|) (bvadd |c_ldv_kobject_put_ldv_kref_sub_~kref#1.offset| (_ bv4294967284 32))) (_ bv0 32)))) is different from false [2023-11-29 04:58:39,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:39,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529749189] [2023-11-29 04:58:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529749189] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:58:39,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023883171] [2023-11-29 04:58:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:39,188 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:58:39,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:58:39,189 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:58:39,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 04:58:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:39,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 04:58:39,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:39,884 INFO L378 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 11 treesize of output 7 [2023-11-29 04:58:39,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:39,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:39,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:39,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:39,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-11-29 04:58:40,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:58:40,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2023-11-29 04:58:40,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-29 04:58:40,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:58:40,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 04:58:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:40,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:40,693 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (let ((.cse2 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv3 32)))) (store (let ((.cse1 (bvadd (_ bv2 32) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|))) (store (let ((.cse0 (bvadd |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (_ bv1 32)))) (store (store (select |c_#memory_$Pointer$#1.base| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base|) |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset| (select v_ArrVal_2340 |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.offset|)) .cse0 (select v_ArrVal_2340 .cse0))) .cse1 (select v_ArrVal_2340 .cse1))) .cse2 (select v_ArrVal_2340 .cse2))) v_ArrVal_2340)) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ldv_kobject_put_ldv_atomic_sub_return_~v#1.base| v_ArrVal_2340) |c_ldv_kobject_put_ldv_kref_sub_~kref#1.base|) (_ bv0 32)) (_ bv0 32)))) is different from false [2023-11-29 04:58:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023883171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:58:42,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:42,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 43 [2023-11-29 04:58:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801260025] [2023-11-29 04:58:42,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:42,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 04:58:42,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 04:58:42,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2960, Unknown=2, NotChecked=222, Total=3422 [2023-11-29 04:58:42,442 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 43 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:45,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:45,969 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2023-11-29 04:58:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 04:58:45,969 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2023-11-29 04:58:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:45,970 INFO L225 Difference]: With dead ends: 105 [2023-11-29 04:58:45,970 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 04:58:45,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=418, Invalid=4558, Unknown=2, NotChecked=278, Total=5256 [2023-11-29 04:58:45,972 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:45,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 400 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 04:58:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 04:58:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2023-11-29 04:58:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 88 states have internal predecessors, (93), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:45,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2023-11-29 04:58:45,976 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 51 [2023-11-29 04:58:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:45,976 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2023-11-29 04:58:45,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2023-11-29 04:58:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:58:45,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:45,977 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:45,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-11-29 04:58:46,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (28)] Ended with exit code 0 [2023-11-29 04:58:46,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:46,378 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:46,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1942431170, now seen corresponding path program 1 times [2023-11-29 04:58:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:46,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000534473] [2023-11-29 04:58:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:46,379 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 [2023-11-29 04:58:46,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:46,380 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:46,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (30)] Waiting until timeout for monitored process [2023-11-29 04:58:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:46,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:58:46,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:46,763 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 04:58:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:46,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:47,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:47,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000534473] [2023-11-29 04:58:47,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000534473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:47,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:47,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2023-11-29 04:58:47,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988517909] [2023-11-29 04:58:47,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:47,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:58:47,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:58:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:58:47,088 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:58:47,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:47,768 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2023-11-29 04:58:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:58:47,768 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2023-11-29 04:58:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:47,769 INFO L225 Difference]: With dead ends: 114 [2023-11-29 04:58:47,769 INFO L226 Difference]: Without dead ends: 114 [2023-11-29 04:58:47,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-11-29 04:58:47,770 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 89 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:47,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 245 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-29 04:58:47,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2023-11-29 04:58:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 89 states have internal predecessors, (95), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2023-11-29 04:58:47,773 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 55 [2023-11-29 04:58:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:47,773 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2023-11-29 04:58:47,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 04:58:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2023-11-29 04:58:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:58:47,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:47,774 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:47,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (30)] Ended with exit code 0 [2023-11-29 04:58:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:47,975 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:47,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1942431171, now seen corresponding path program 1 times [2023-11-29 04:58:47,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:47,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262834256] [2023-11-29 04:58:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:47,976 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 [2023-11-29 04:58:47,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:47,976 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:47,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (31)] Waiting until timeout for monitored process [2023-11-29 04:58:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:48,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 04:58:48,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:48,312 INFO L378 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 04:58:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:48,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:48,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:48,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262834256] [2023-11-29 04:58:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262834256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:48,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:48,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 04:58:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152982470] [2023-11-29 04:58:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:58:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:58:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:58:48,679 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:58:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:49,331 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2023-11-29 04:58:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:58:49,332 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2023-11-29 04:58:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:49,333 INFO L225 Difference]: With dead ends: 98 [2023-11-29 04:58:49,333 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 04:58:49,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:58:49,334 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 108 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:49,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 272 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 04:58:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-29 04:58:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 87 states have internal predecessors, (92), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2023-11-29 04:58:49,338 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 55 [2023-11-29 04:58:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:49,338 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2023-11-29 04:58:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:58:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2023-11-29 04:58:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:58:49,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:49,338 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:49,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (31)] Ended with exit code 0 [2023-11-29 04:58:49,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:49,539 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:49,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1984463513, now seen corresponding path program 1 times [2023-11-29 04:58:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416978395] [2023-11-29 04:58:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:49,540 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 [2023-11-29 04:58:49,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:49,541 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:49,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (32)] Waiting until timeout for monitored process [2023-11-29 04:58:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:49,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:58:49,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-29 04:58:49,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:49,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416978395] [2023-11-29 04:58:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416978395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:49,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:58:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620665250] [2023-11-29 04:58:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:58:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:58:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:58:49,908 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:58:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:50,120 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2023-11-29 04:58:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:58:50,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2023-11-29 04:58:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:50,121 INFO L225 Difference]: With dead ends: 102 [2023-11-29 04:58:50,121 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 04:58:50,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:58:50,122 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 29 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:50,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 272 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:58:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 04:58:50,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-11-29 04:58:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.139240506329114) internal successors, (90), 87 states have internal predecessors, (90), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2023-11-29 04:58:50,125 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 55 [2023-11-29 04:58:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:50,125 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2023-11-29 04:58:50,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:58:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2023-11-29 04:58:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 04:58:50,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:50,126 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:50,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (32)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:50,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:50,327 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:50,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1634311758, now seen corresponding path program 1 times [2023-11-29 04:58:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645960140] [2023-11-29 04:58:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:50,328 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 [2023-11-29 04:58:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:50,329 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:50,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (33)] Waiting until timeout for monitored process [2023-11-29 04:58:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:50,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 04:58:50,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-29 04:58:51,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:51,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645960140] [2023-11-29 04:58:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645960140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:51,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:51,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 04:58:51,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089138614] [2023-11-29 04:58:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:58:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:58:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:58:51,180 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:58:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:51,876 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2023-11-29 04:58:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:58:51,877 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2023-11-29 04:58:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:51,877 INFO L225 Difference]: With dead ends: 97 [2023-11-29 04:58:51,877 INFO L226 Difference]: Without dead ends: 97 [2023-11-29 04:58:51,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:58:51,878 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 110 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:51,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 255 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:58:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-29 04:58:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-29 04:58:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.1265822784810127) internal successors, (89), 86 states have internal predecessors, (89), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-29 04:58:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2023-11-29 04:58:51,881 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 57 [2023-11-29 04:58:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:51,881 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2023-11-29 04:58:51,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:58:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2023-11-29 04:58:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 04:58:51,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:51,882 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:51,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (33)] Ended with exit code 0 [2023-11-29 04:58:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:52,083 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] === [2023-11-29 04:58:52,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 436014558, now seen corresponding path program 1 times [2023-11-29 04:58:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752025613] [2023-11-29 04:58:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:52,084 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 [2023-11-29 04:58:52,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:52,084 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:52,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (34)] Waiting until timeout for monitored process [2023-11-29 04:58:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:58:52,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:58:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:58:52,792 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 04:58:52,792 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:58:52,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 21 remaining) [2023-11-29 04:58:52,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 21 remaining) [2023-11-29 04:58:52,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr6ASSERT_VIOLATIONMEMORY_FREE (10 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE (9 of 21 remaining) [2023-11-29 04:58:52,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr8ASSERT_VIOLATIONMEMORY_FREE (8 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE (7 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE (6 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_putErr11ASSERT_VIOLATIONMEMORY_FREE (5 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (4 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (3 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 21 remaining) [2023-11-29 04:58:52,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2023-11-29 04:58:52,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 (34)] Ended with exit code 0 [2023-11-29 04:58:52,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:53,000 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:53,003 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:58:53,034 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret38 [2023-11-29 04:58:53,035 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:58:53,035 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:58:53,036 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:58:53,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:58:53 BoogieIcfgContainer [2023-11-29 04:58:53,045 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:58:53,045 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:58:53,045 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:58:53,045 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:58:53,046 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:58:00" (3/4) ... [2023-11-29 04:58:53,047 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-29 04:58:53,061 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret38 [2023-11-29 04:58:53,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:58:53,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:58:53,063 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 [2023-11-29 04:58:53,104 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:58:53,104 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:58:53,105 INFO L158 Benchmark]: Toolchain (without parser) took 53688.54ms. Allocated memory was 69.2MB in the beginning and 125.8MB in the end (delta: 56.6MB). Free memory was 38.6MB in the beginning and 31.3MB in the end (delta: 7.4MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,105 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:58:53,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.05ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 30.9MB in the end (delta: 7.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.48ms. Allocated memory is still 69.2MB. Free memory was 30.9MB in the beginning and 28.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,106 INFO L158 Benchmark]: Boogie Preprocessor took 73.47ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 28.1MB in the beginning and 60.7MB in the end (delta: -32.7MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,106 INFO L158 Benchmark]: RCFGBuilder took 586.86ms. Allocated memory is still 86.0MB. Free memory was 60.7MB in the beginning and 56.5MB in the end (delta: 4.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,107 INFO L158 Benchmark]: TraceAbstraction took 52344.87ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 55.7MB in the beginning and 36.5MB in the end (delta: 19.2MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,107 INFO L158 Benchmark]: Witness Printer took 59.38ms. Allocated memory is still 125.8MB. Free memory was 36.5MB in the beginning and 31.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:58:53,109 INFO L338 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 69.2MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.05ms. Allocated memory is still 69.2MB. Free memory was 38.4MB in the beginning and 30.9MB in the end (delta: 7.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.48ms. Allocated memory is still 69.2MB. Free memory was 30.9MB in the beginning and 28.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.47ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 28.1MB in the beginning and 60.7MB in the end (delta: -32.7MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * RCFGBuilder took 586.86ms. Allocated memory is still 86.0MB. Free memory was 60.7MB in the beginning and 56.5MB in the end (delta: 4.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * TraceAbstraction took 52344.87ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 55.7MB in the beginning and 36.5MB in the end (delta: 19.2MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Witness Printer took 59.38ms. Allocated memory is still 125.8MB. Free memory was 36.5MB in the beginning and 31.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret38 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret38 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #Ultimate.C_memset_#res#1 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L770] CALL entry_point() [L764] struct ldv_kobject *kobj; [L765] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={1:0}] [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_global_msg_list={1:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [ldv_global_msg_list={1:0}, list={2:4}] [L540] list->next = list VAL [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}] [L541] list->prev = list [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; VAL [\result={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L765] RET, EXPR ldv_kobject_create() [L765] kobj = ldv_kobject_create() [L766] CALL f_22_put(kobj) [L761] CALL ldv_kobject_put(kobj) VAL [ldv_global_msg_list={1:0}] [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL, EXPR ldv_kref_sub(kref, 1, release) [L674] CALL, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}] [L666] EXPR v->counter [L666] temp = v->counter [L667] temp -= i VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=0, v={2:12}, v={2:12}] [L668] v->counter = temp [L669] return temp; [L674] RET, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L674] COND TRUE (ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0) [L675] CALL release(kref) [L706] const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); [L706] { const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );} [L706] { const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );} [L706] struct ldv_kobject *kobj = ({ const typeof( ((struct ldv_kobject *)0)->kref ) *__mptr = (kref); (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) );}); [L707] CALL ldv_kobject_cleanup(kobj) [L699] EXPR kobj->name [L699] char *name = kobj->name; [L700] free(kobj) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}, name={0:0}] [L700] free(kobj) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}, name={0:0}] [L700] free(kobj) [L701] COND FALSE !(\read(*name)) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}, name={0:0}] [L707] RET ldv_kobject_cleanup(kobj) [L675] RET release(kref) [L676] return 1; VAL [\old(count)=1, \result=1, count=1, kref={2:12}, kref={2:12}, ldv_global_msg_list={1:0}, release={-1:0}, release={-1:0}] [L690] RET, EXPR ldv_kref_sub(kref, 1, release) [L690] return ldv_kref_sub(kref, 1, release); [L712] RET ldv_kref_put(&kobj->kref, ldv_kobject_release) [L761] RET ldv_kobject_put(kobj) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L766] RET f_22_put(kobj) [L767] CALL ldv_kobject_put(kobj) VAL [ldv_global_msg_list={1:0}] [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL ldv_kref_sub(kref, 1, release) [L674] CALL ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}] [L666] v->counter - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 52.3s, OverallIterations: 31, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1502 SdHoareTripleChecker+Valid, 14.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1494 mSDsluCounter, 8904 SdHoareTripleChecker+Invalid, 13.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7558 mSDsCounter, 136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7912 IncrementalHoareTripleChecker+Invalid, 8048 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 136 mSolverCounterUnsat, 1346 mSDtfsCounter, 7912 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1436 GetRequests, 943 SyntacticMatches, 16 SemanticMatches, 477 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3790 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=24, InterpolantAutomatonStates: 371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 134 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 1154 NumberOfCodeBlocks, 1124 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1226 ConstructedInterpolants, 80 QuantifiedInterpolants, 8795 SizeOfPredicates, 462 NumberOfNonLiveVariables, 8034 ConjunctsInSsa, 951 ConjunctsInUnsatCore, 37 InterpolantComputations, 23 PerfectInterpolantSequences, 2400/3092 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-29 04:58:53,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd676108-6a20-4bb9-b1da-0fa0a8a652c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)