./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/head-2.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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 e7c6e6d6b508cc7e8b4b8b024471ff0eb17f579c7977a910bbe95623e5bb1a4e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:01:16,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:01:16,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-21 21:01:16,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:01:16,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:01:16,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:01:16,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:01:16,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:01:16,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:01:16,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:01:16,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:01:16,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:01:16,739 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:01:16,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:01:16,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:01:16,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:01:16,741 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:01:16,742 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:01:16,742 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:01:16,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:01:16,743 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:01:16,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:01:16,745 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:01:16,745 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:01:16,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:01:16,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:01:16,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:01:16,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:16,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:01:16,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:01:16,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:01:16,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:01:16,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:01:16,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:01:16,752 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:01:16,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:01:16,774 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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c6e6d6b508cc7e8b4b8b024471ff0eb17f579c7977a910bbe95623e5bb1a4e [2023-11-21 21:01:17,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:01:17,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:01:17,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:01:17,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:01:17,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:01:17,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/head-2.i [2023-11-21 21:01:20,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:20,864 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:20,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/sv-benchmarks/c/busybox-1.22.0/head-2.i [2023-11-21 21:01:20,895 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data/36818b4c9/fd5e41551b074649b8329fea3532f377/FLAG509048219 [2023-11-21 21:01:20,912 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data/36818b4c9/fd5e41551b074649b8329fea3532f377 [2023-11-21 21:01:20,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:20,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:20,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:20,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:20,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:20,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:20" (1/1) ... [2023-11-21 21:01:20,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54891af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:20, skipping insertion in model container [2023-11-21 21:01:20,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:20" (1/1) ... [2023-11-21 21:01:21,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:22,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:22,640 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 21:01:22,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34328454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:22, skipping insertion in model container [2023-11-21 21:01:22,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:22,641 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 21:01:22,643 INFO L158 Benchmark]: Toolchain (without parser) took 1725.43ms. Allocated memory is still 182.5MB. Free memory was 150.1MB in the beginning and 117.3MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-21 21:01:22,644 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 130.0MB. Free memory was 104.0MB in the beginning and 103.9MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:01:22,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1722.45ms. Allocated memory is still 182.5MB. Free memory was 150.1MB in the beginning and 117.3MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-21 21:01:22,646 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 130.0MB. Free memory was 104.0MB in the beginning and 103.9MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1722.45ms. Allocated memory is still 182.5MB. Free memory was 150.1MB in the beginning and 117.3MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. 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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 e7c6e6d6b508cc7e8b4b8b024471ff0eb17f579c7977a910bbe95623e5bb1a4e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:01:24,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:01:25,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-21 21:01:25,051 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:01:25,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:01:25,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:01:25,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:01:25,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:01:25,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:01:25,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:01:25,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:01:25,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:01:25,100 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:01:25,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:01:25,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:01:25,103 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:01:25,103 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:01:25,103 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:01:25,104 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:01:25,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:01:25,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:01:25,105 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 21:01:25,106 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 21:01:25,106 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:01:25,107 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:01:25,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:01:25,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:01:25,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:01:25,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:01:25,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:25,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:01:25,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:01:25,112 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 21:01:25,112 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 21:01:25,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:01:25,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:01:25,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:01:25,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:01:25,113 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 21:01:25,114 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_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c6e6d6b508cc7e8b4b8b024471ff0eb17f579c7977a910bbe95623e5bb1a4e [2023-11-21 21:01:25,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:01:25,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:01:25,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:01:25,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:01:25,587 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:01:25,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/busybox-1.22.0/head-2.i [2023-11-21 21:01:28,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:29,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:29,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/sv-benchmarks/c/busybox-1.22.0/head-2.i [2023-11-21 21:01:29,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data/e1a35326e/5149d7ceace24b33858ba0b981030a6b/FLAG4b0929c76 [2023-11-21 21:01:29,430 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/data/e1a35326e/5149d7ceace24b33858ba0b981030a6b [2023-11-21 21:01:29,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:29,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:29,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:29,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:29,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:29,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:29" (1/1) ... [2023-11-21 21:01:29,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d3ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:29, skipping insertion in model container [2023-11-21 21:01:29,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:29" (1/1) ... [2023-11-21 21:01:29,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:30,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:30,972 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 21:01:31,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:31,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:31,216 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:01:31,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:31,694 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,694 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,697 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,697 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,698 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,698 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,698 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,698 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,698 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:01:31,706 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:01:31,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31 WrapperNode [2023-11-21 21:01:31,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:31,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:31,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:01:31,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:01:31,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,896 INFO L138 Inliner]: procedures = 595, calls = 371, calls flagged for inlining = 30, calls inlined = 28, statements flattened = 1090 [2023-11-21 21:01:31,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:31,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:01:31,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:01:31,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:01:31,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:31,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:32,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:32,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:32,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:01:32,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:01:32,049 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:01:32,049 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:01:32,050 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (1/1) ... [2023-11-21 21:01:32,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:32,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:32,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:01:32,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:01:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-21 21:01:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-21 21:01:32,143 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-21 21:01:32,143 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-11-21 21:01:32,143 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-11-21 21:01:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-21 21:01:32,144 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-21 21:01:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-21 21:01:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:01:32,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 21:01:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 21:01:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-21 21:01:32,145 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-21 21:01:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-21 21:01:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:01:32,145 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-21 21:01:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-21 21:01:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:01:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:01:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-11-21 21:01:32,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-11-21 21:01:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-11-21 21:01:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-11-21 21:01:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:01:32,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:01:32,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 21:01:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-21 21:01:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-21 21:01:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-21 21:01:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-21 21:01:32,148 INFO L130 BoogieDeclarations]: Found specification of procedure getopt [2023-11-21 21:01:32,148 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt [2023-11-21 21:01:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 21:01:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 21:01:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 21:01:32,149 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-21 21:01:32,149 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-21 21:01:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-21 21:01:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 21:01:32,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 21:01:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:01:32,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:01:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-21 21:01:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-11-21 21:01:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-21 21:01:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 21:01:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-21 21:01:32,151 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-21 21:01:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-11-21 21:01:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-11-21 21:01:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 21:01:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-11-21 21:01:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2023-11-21 21:01:32,152 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2023-11-21 21:01:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-21 21:01:32,153 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-21 21:01:32,738 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:01:32,740 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:01:41,708 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:01:42,075 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:01:42,075 INFO L308 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-21 21:01:42,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:42 BoogieIcfgContainer [2023-11-21 21:01:42,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:01:42,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:01:42,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:01:42,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:01:42,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:01:29" (1/3) ... [2023-11-21 21:01:42,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cab7b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:42, skipping insertion in model container [2023-11-21 21:01:42,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:31" (2/3) ... [2023-11-21 21:01:42,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cab7b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:42, skipping insertion in model container [2023-11-21 21:01:42,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:42" (3/3) ... [2023-11-21 21:01:42,092 INFO L112 eAbstractionObserver]: Analyzing ICFG head-2.i [2023-11-21 21:01:42,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:01:42,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 273 error locations. [2023-11-21 21:01:42,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:42,208 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;@374f224e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:42,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 273 error locations. [2023-11-21 21:01:42,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 353 states have (on average 2.084985835694051) internal successors, (736), 626 states have internal predecessors, (736), 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 21:01:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 21:01:42,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:42,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 21:01:42,234 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 21:01:42,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:42,239 INFO L85 PathProgramCache]: Analyzing trace with hash 49800, now seen corresponding path program 1 times [2023-11-21 21:01:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:01:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305494714] [2023-11-21 21:01:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:42,260 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 21:01:42,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:01:42,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:42,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:01:42,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:42,822 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 21:01:42,860 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 21:01:42,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:42,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:01:42,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305494714] [2023-11-21 21:01:42,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305494714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:01:42,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997951836] [2023-11-21 21:01:42,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:42,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:01:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:42,917 INFO L87 Difference]: Start difference. First operand has 668 states, 353 states have (on average 2.084985835694051) internal successors, (736), 626 states have internal predecessors, (736), 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 21:01:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:47,418 INFO L93 Difference]: Finished difference Result 836 states and 989 transitions. [2023-11-21 21:01:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:47,421 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 21:01:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:47,441 INFO L225 Difference]: With dead ends: 836 [2023-11-21 21:01:47,441 INFO L226 Difference]: Without dead ends: 835 [2023-11-21 21:01:47,443 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 21:01:47,447 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 259 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:47,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 980 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-21 21:01:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-21 21:01:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 653. [2023-11-21 21:01:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 346 states have (on average 2.031791907514451) internal successors, (703), 616 states have internal predecessors, (703), 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 21:01:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 760 transitions. [2023-11-21 21:01:47,547 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 760 transitions. Word has length 2 [2023-11-21 21:01:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:47,548 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 760 transitions. [2023-11-21 21:01:47,548 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 21:01:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 760 transitions. [2023-11-21 21:01:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 21:01:47,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:47,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 21:01:47,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:47,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:47,761 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 21:01:47,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:47,762 INFO L85 PathProgramCache]: Analyzing trace with hash 49801, now seen corresponding path program 1 times [2023-11-21 21:01:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:01:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601470325] [2023-11-21 21:01:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:47,764 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 21:01:47,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:01:47,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:47,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:48,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:01:48,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:48,217 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 21:01:48,257 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 21:01:48,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:48,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:01:48,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601470325] [2023-11-21 21:01:48,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601470325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:48,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:48,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:01:48,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217038320] [2023-11-21 21:01:48,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:48,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:48,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:01:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:48,260 INFO L87 Difference]: Start difference. First operand 653 states and 760 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 21:01:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:52,748 INFO L93 Difference]: Finished difference Result 652 states and 759 transitions. [2023-11-21 21:01:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:52,750 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 21:01:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:52,755 INFO L225 Difference]: With dead ends: 652 [2023-11-21 21:01:52,755 INFO L226 Difference]: Without dead ends: 652 [2023-11-21 21:01:52,756 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 21:01:52,757 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 8 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:52,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1124 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-21 21:01:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2023-11-21 21:01:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2023-11-21 21:01:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 346 states have (on average 2.0289017341040463) internal successors, (702), 615 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 21:01:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 759 transitions. [2023-11-21 21:01:52,795 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 759 transitions. Word has length 2 [2023-11-21 21:01:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:52,796 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 759 transitions. [2023-11-21 21:01:52,796 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 21:01:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 759 transitions. [2023-11-21 21:01:52,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 21:01:52,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:52,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 21:01:52,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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)] Forceful destruction successful, exit code 0 [2023-11-21 21:01:53,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:53,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 21:01:53,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash 48797539, now seen corresponding path program 1 times [2023-11-21 21:01:53,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:01:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700545424] [2023-11-21 21:01:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:53,008 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 21:01:53,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:01:53,009 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:53,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:53,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:01:53,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:53,431 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 21:01:53,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:53,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:01:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700545424] [2023-11-21 21:01:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700545424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:53,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:53,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800978612] [2023-11-21 21:01:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:53,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:01:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:53,435 INFO L87 Difference]: Start difference. First operand 652 states and 759 transitions. Second operand has 3 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 21:01:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:55,274 INFO L93 Difference]: Finished difference Result 655 states and 762 transitions. [2023-11-21 21:01:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 21:01:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:55,281 INFO L225 Difference]: With dead ends: 655 [2023-11-21 21:01:55,281 INFO L226 Difference]: Without dead ends: 655 [2023-11-21 21:01:55,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 21:01:55,283 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 2 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:55,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1334 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-21 21:01:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-21 21:01:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 653. [2023-11-21 21:01:55,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 347 states have (on average 2.025936599423631) internal successors, (703), 616 states have internal predecessors, (703), 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 21:01:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 760 transitions. [2023-11-21 21:01:55,321 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 760 transitions. Word has length 4 [2023-11-21 21:01:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:55,322 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 760 transitions. [2023-11-21 21:01:55,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 21:01:55,323 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 760 transitions. [2023-11-21 21:01:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 21:01:55,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:55,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 21:01:55,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:55,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:55,532 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 21:01:55,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash 48767305, now seen corresponding path program 1 times [2023-11-21 21:01:55,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:01:55,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080681758] [2023-11-21 21:01:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:55,534 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 21:01:55,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:01:55,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:55,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:01:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:55,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 21:01:55,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:01:55,908 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 21:01:56,074 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 21:01:56,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:01:56,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:01:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080681758] [2023-11-21 21:01:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080681758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:56,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:01:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66397466] [2023-11-21 21:01:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:01:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:01:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:01:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:01:56,077 INFO L87 Difference]: Start difference. First operand 653 states and 760 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 21:02:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:00,446 INFO L93 Difference]: Finished difference Result 654 states and 761 transitions. [2023-11-21 21:02:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:02:00,448 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 21:02:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:00,452 INFO L225 Difference]: With dead ends: 654 [2023-11-21 21:02:00,453 INFO L226 Difference]: Without dead ends: 654 [2023-11-21 21:02:00,453 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 21:02:00,454 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 8 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:00,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1124 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-21 21:02:00,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-11-21 21:02:00,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2023-11-21 21:02:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 348 states have (on average 2.0229885057471266) internal successors, (704), 617 states have internal predecessors, (704), 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 21:02:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 761 transitions. [2023-11-21 21:02:00,484 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 761 transitions. Word has length 4 [2023-11-21 21:02:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:00,491 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 761 transitions. [2023-11-21 21:02:00,491 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 21:02:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 761 transitions. [2023-11-21 21:02:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:02:00,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:00,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:02:00,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:02:00,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 21:02:00,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -378330022, now seen corresponding path program 1 times [2023-11-21 21:02:00,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549958134] [2023-11-21 21:02:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:00,702 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 21:02:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:00,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:02:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 (6)] Waiting until timeout for monitored process [2023-11-21 21:02:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:01,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:01,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:02:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:01,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:01,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549958134] [2023-11-21 21:02:01,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549958134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:02:01,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 21:02:01,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-21 21:02:01,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878710959] [2023-11-21 21:02:01,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 21:02:01,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:01,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:01,267 INFO L87 Difference]: Start difference. First operand 654 states and 761 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 21:02:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:04,458 INFO L93 Difference]: Finished difference Result 661 states and 768 transitions. [2023-11-21 21:02:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:02:04,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 21:02:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:04,464 INFO L225 Difference]: With dead ends: 661 [2023-11-21 21:02:04,464 INFO L226 Difference]: Without dead ends: 661 [2023-11-21 21:02:04,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:02:04,466 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 7 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:04,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2668 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-21 21:02:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-11-21 21:02:04,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 659. [2023-11-21 21:02:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 353 states have (on average 2.0141643059490084) internal successors, (711), 622 states have internal predecessors, (711), 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 21:02:04,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 768 transitions. [2023-11-21 21:02:04,507 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 768 transitions. Word has length 6 [2023-11-21 21:02:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:04,508 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 768 transitions. [2023-11-21 21:02:04,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 21:02:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 768 transitions. [2023-11-21 21:02:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:02:04,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:04,509 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-21 21:02:04,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 (6)] Ended with exit code 0 [2023-11-21 21:02:04,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:02:04,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-11-21 21:02:04,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash -378360256, now seen corresponding path program 1 times [2023-11-21 21:02:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765468242] [2023-11-21 21:02:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:04,719 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 21:02:04,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:04,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 21:02:04,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86d1c51c-68ae-4de3-92cb-6ed886023ff1/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 (7)] Waiting until timeout for monitored process [2023-11-21 21:02:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:02:05,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:05,102 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 21:02:05,385 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 21:02:05,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:02:05,965 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 21:02:05,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:05,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765468242] [2023-11-21 21:02:05,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765468242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:02:05,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 21:02:05,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-21 21:02:05,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898570452] [2023-11-21 21:02:05,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 21:02:05,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:02:05,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:05,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:02:05,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:05,968 INFO L87 Difference]: Start difference. First operand 659 states and 768 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)