./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/head-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx --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 64bit --witnessprinter.graph.data.programhash cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:23,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:23,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-21 22:12:23,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:23,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:23,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:23,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:23,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:23,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:23,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:23,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:23,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:23,897 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:23,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:23,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:23,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:23,899 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:12:23,900 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:12:23,900 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:12:23,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:23,901 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:12:23,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:23,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:23,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:23,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:23,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:23,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:23,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:23,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:23,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:23,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:12:23,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:12:23,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:23,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:23,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:23,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:23,909 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_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 [2023-11-21 22:12:24,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:24,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:24,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:24,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:24,308 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:24,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-11-21 22:12:27,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:12:28,118 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:12:28,119 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-11-21 22:12:28,167 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data/3688c6e7c/d28d5de68d294a57a29b74ab149fb80b/FLAGa3518f320 [2023-11-21 22:12:28,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data/3688c6e7c/d28d5de68d294a57a29b74ab149fb80b [2023-11-21 22:12:28,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:12:28,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:12:28,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:28,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:12:28,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:12:28,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df01f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:28, skipping insertion in model container [2023-11-21 22:12:28,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:28" (1/1) ... [2023-11-21 22:12:28,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:30,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:30,121 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) [2023-11-21 22:12:30,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4dabb0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:30, skipping insertion in model container [2023-11-21 22:12:30,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:30,122 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:12:30,125 INFO L158 Benchmark]: Toolchain (without parser) took 1924.85ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 72.2MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-21 22:12:30,126 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 142.6MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:12:30,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1919.03ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 72.2MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-21 22:12:30,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 142.6MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1919.03ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 72.2MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2251]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx --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 64bit --witnessprinter.graph.data.programhash cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:32,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:32,962 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-21 22:12:32,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:32,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:33,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:33,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:33,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:33,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:33,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:33,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:33,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:33,021 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:33,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:33,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:33,023 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:33,024 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:12:33,024 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:12:33,025 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:12:33,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:33,026 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:12:33,026 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:12:33,027 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:12:33,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:33,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:33,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:33,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:33,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:33,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:33,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:33,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:33,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:33,032 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:12:33,033 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:12:33,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:33,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:33,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:33,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:33,034 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:12:33,036 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_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 [2023-11-21 22:12:33,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:33,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:33,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:33,444 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:33,444 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:33,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-11-21 22:12:36,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:12:37,306 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:12:37,307 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-11-21 22:12:37,350 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data/657ac4fca/f7716f6fa5aa471293a96b4a7f788ab6/FLAG2015227f5 [2023-11-21 22:12:37,374 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/data/657ac4fca/f7716f6fa5aa471293a96b4a7f788ab6 [2023-11-21 22:12:37,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:12:37,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:12:37,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:37,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:12:37,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:12:37,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:37" (1/1) ... [2023-11-21 22:12:37,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e15895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:37, skipping insertion in model container [2023-11-21 22:12:37,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:12:37" (1/1) ... [2023-11-21 22:12:37,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:39,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:39,226 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:12:39,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:12:39,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:39,554 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:12:39,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:12:39,978 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,979 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,979 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,979 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,979 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,979 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,980 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,980 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,980 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:12:39,990 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:12:39,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39 WrapperNode [2023-11-21 22:12:39,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:12:39,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:39,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:12:39,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:12:40,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,189 INFO L138 Inliner]: procedures = 595, calls = 371, calls flagged for inlining = 30, calls inlined = 28, statements flattened = 1089 [2023-11-21 22:12:40,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:12:40,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:12:40,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:12:40,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:12:40,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:12:40,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:12:40,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:12:40,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:12:40,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (1/1) ... [2023-11-21 22:12:40,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:12:40,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:12:40,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:12:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-21 22:12:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-21 22:12:40,565 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-21 22:12:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-21 22:12:40,566 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-21 22:12:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-21 22:12:40,567 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-21 22:12:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-21 22:12:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:12:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:12:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 22:12:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-21 22:12:40,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-21 22:12:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-21 22:12:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:12:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-21 22:12:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 22:12:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:12:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:12:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-21 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-21 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-21 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-21 22:12:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:12:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:12:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 22:12:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-21 22:12:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-21 22:12:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure getopt [2023-11-21 22:12:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt [2023-11-21 22:12:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:12:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 22:12:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 22:12:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-21 22:12:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-21 22:12:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-21 22:12:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:12:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:12:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:12:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:12:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-21 22:12:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-21 22:12:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-21 22:12:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:12:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-21 22:12:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-21 22:12:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-21 22:12:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-21 22:12:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 22:12:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-21 22:12:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2023-11-21 22:12:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2023-11-21 22:12:40,580 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-21 22:12:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-21 22:12:41,233 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:12:41,237 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:12:51,539 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:12:51,935 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:12:51,936 INFO L308 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-21 22:12:51,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:51 BoogieIcfgContainer [2023-11-21 22:12:51,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:12:51,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:12:51,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:12:51,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:12:51,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:12:37" (1/3) ... [2023-11-21 22:12:51,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bb6c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:51, skipping insertion in model container [2023-11-21 22:12:51,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:12:39" (2/3) ... [2023-11-21 22:12:51,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bb6c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:12:51, skipping insertion in model container [2023-11-21 22:12:51,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:12:51" (3/3) ... [2023-11-21 22:12:51,968 INFO L112 eAbstractionObserver]: Analyzing ICFG head-1.i [2023-11-21 22:12:51,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:12:51,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 273 error locations. [2023-11-21 22:12:52,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:12:52,110 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;@60d493d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:12:52,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 273 error locations. [2023-11-21 22:12:52,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 667 states, 352 states have (on average 2.085227272727273) internal successors, (734), 625 states have internal predecessors, (734), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-21 22:12:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:12:52,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:52,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:12:52,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 22:12:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:52,150 INFO L85 PathProgramCache]: Analyzing trace with hash 49645, now seen corresponding path program 1 times [2023-11-21 22:12:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:52,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586005927] [2023-11-21 22:12:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:52,177 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 [2023-11-21 22:12:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:52,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:52,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:52,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:12:52,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:52,791 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 [2023-11-21 22:12:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:52,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:52,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586005927] [2023-11-21 22:12:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586005927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:52,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:12:52,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364164141] [2023-11-21 22:12:52,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:52,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:52,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:52,892 INFO L87 Difference]: Start difference. First operand has 667 states, 352 states have (on average 2.085227272727273) internal successors, (734), 625 states have internal predecessors, (734), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:12:57,763 INFO L93 Difference]: Finished difference Result 834 states and 985 transitions. [2023-11-21 22:12:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 22:12:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:12:57,788 INFO L225 Difference]: With dead ends: 834 [2023-11-21 22:12:57,788 INFO L226 Difference]: Without dead ends: 833 [2023-11-21 22:12:57,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:57,794 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 257 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:12:57,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 978 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-21 22:12:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-21 22:12:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 652. [2023-11-21 22:12:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 345 states have (on average 2.0318840579710145) internal successors, (701), 615 states have internal predecessors, (701), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-21 22:12:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 758 transitions. [2023-11-21 22:12:57,889 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 758 transitions. Word has length 2 [2023-11-21 22:12:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:12:57,890 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 758 transitions. [2023-11-21 22:12:57,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 758 transitions. [2023-11-21 22:12:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:12:57,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:12:57,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:12:57,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Ended with exit code 0 [2023-11-21 22:12:58,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:12:58,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 22:12:58,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash 49646, now seen corresponding path program 1 times [2023-11-21 22:12:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:12:58,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301839967] [2023-11-21 22:12:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:58,101 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 [2023-11-21 22:12:58,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:12:58,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:12:58,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:12:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:58,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:12:58,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:12:58,546 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 [2023-11-21 22:12:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:58,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:12:58,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:12:58,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301839967] [2023-11-21 22:12:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301839967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:58,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:58,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:12:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103874435] [2023-11-21 22:12:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:12:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:58,595 INFO L87 Difference]: Start difference. First operand 652 states and 758 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:03,342 INFO L93 Difference]: Finished difference Result 651 states and 757 transitions. [2023-11-21 22:13:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:03,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-21 22:13:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:03,350 INFO L225 Difference]: With dead ends: 651 [2023-11-21 22:13:03,350 INFO L226 Difference]: Without dead ends: 651 [2023-11-21 22:13:03,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:03,352 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 8 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:03,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1122 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-21 22:13:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-11-21 22:13:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2023-11-21 22:13:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 345 states have (on average 2.028985507246377) internal successors, (700), 614 states have internal predecessors, (700), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-21 22:13:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 757 transitions. [2023-11-21 22:13:03,411 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 757 transitions. Word has length 2 [2023-11-21 22:13:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:03,412 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 757 transitions. [2023-11-21 22:13:03,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 757 transitions. [2023-11-21 22:13:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 22:13:03,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:03,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 22:13:03,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:13:03,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:03,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 22:13:03,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash 48607779, now seen corresponding path program 1 times [2023-11-21 22:13:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957264042] [2023-11-21 22:13:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:03,624 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 [2023-11-21 22:13:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:03,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:13:03,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:13:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:04,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:13:04,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:04,110 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 [2023-11-21 22:13:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:04,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:04,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:04,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957264042] [2023-11-21 22:13:04,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957264042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:04,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:04,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983448193] [2023-11-21 22:13:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:13:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:13:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:04,331 INFO L87 Difference]: Start difference. First operand 651 states and 757 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:09,129 INFO L93 Difference]: Finished difference Result 653 states and 759 transitions. [2023-11-21 22:13:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:13:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 22:13:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:09,137 INFO L225 Difference]: With dead ends: 653 [2023-11-21 22:13:09,137 INFO L226 Difference]: Without dead ends: 653 [2023-11-21 22:13:09,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:13:09,139 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 8 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:09,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1122 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-21 22:13:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2023-11-21 22:13:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2023-11-21 22:13:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 347 states have (on average 2.0230547550432276) internal successors, (702), 616 states have internal predecessors, (702), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-21 22:13:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 759 transitions. [2023-11-21 22:13:09,171 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 759 transitions. Word has length 4 [2023-11-21 22:13:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:09,171 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 759 transitions. [2023-11-21 22:13:09,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 759 transitions. [2023-11-21 22:13:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:13:09,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:09,173 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 22:13:09,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:09,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:09,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 22:13:09,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:09,383 INFO L85 PathProgramCache]: Analyzing trace with hash -531675313, now seen corresponding path program 1 times [2023-11-21 22:13:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:09,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105519083] [2023-11-21 22:13:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:09,385 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 [2023-11-21 22:13:09,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:09,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:13:09,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_020c12fc-82cf-4894-aa49-31d2e344df83/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:13:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:09,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:13:09,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:09,820 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 [2023-11-21 22:13:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:10,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:13:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:13:11,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:11,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105519083] [2023-11-21 22:13:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105519083] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:13:11,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:13:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-21 22:13:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564930204] [2023-11-21 22:13:11,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:13:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:13:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:13:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:13:11,004 INFO L87 Difference]: Start difference. First operand 653 states and 759 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)