./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:14:28,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:14:28,418 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:14:28,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:14:28,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:14:28,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:14:28,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:14:28,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:14:28,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:14:28,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:14:28,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:14:28,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:14:28,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:14:28,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:14:28,457 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:14:28,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:14:28,457 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:14:28,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:14:28,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:14:28,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:14:28,458 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:14:28,458 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:14:28,460 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:14:28,460 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:14:28,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:14:28,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:14:28,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:14:28,462 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2024-11-27 20:14:28,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:14:28,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:14:28,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:14:28,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:14:28,769 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:14:28,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2024-11-27 20:14:31,797 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/3e7e20d4b/9b7e67dcd4a747629545ed5977737cb2/FLAG6afbdbbd6 [2024-11-27 20:14:32,251 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:14:32,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2024-11-27 20:14:32,271 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/3e7e20d4b/9b7e67dcd4a747629545ed5977737cb2/FLAG6afbdbbd6 [2024-11-27 20:14:32,286 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/3e7e20d4b/9b7e67dcd4a747629545ed5977737cb2 [2024-11-27 20:14:32,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:14:32,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:14:32,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:14:32,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:14:32,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:14:32,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:14:32" (1/1) ... [2024-11-27 20:14:32,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f9eb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:32, skipping insertion in model container [2024-11-27 20:14:32,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:14:32" (1/1) ... [2024-11-27 20:14:32,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:14:32,922 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:32,964 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:32,967 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:32,972 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:32,987 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,035 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,036 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,038 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,039 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,042 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,043 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,044 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,045 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,049 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:33,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:14:33,069 ERROR L321 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) [2024-11-27 20:14:33,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20669890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:33, skipping insertion in model container [2024-11-27 20:14:33,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:14:33,070 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-27 20:14:33,072 INFO L158 Benchmark]: Toolchain (without parser) took 781.34ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 69.3MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 20:14:33,073 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:14:33,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 778.70ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 69.3MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 20:14:33,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory is still 105.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 778.70ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 69.3MB in the end (delta: 21.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:14:35,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:14:35,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 20:14:35,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:14:35,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:14:35,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:14:35,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:14:35,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:14:35,728 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:14:35,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:14:35,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:14:35,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:14:35,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:14:35,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:14:35,729 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:14:35,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:14:35,730 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:14:35,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:14:35,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:14:35,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:14:35,730 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:14:35,730 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:14:35,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:14:35,732 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:14:35,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:14:35,732 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:14:35,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:14:35,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:14:35,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:14:35,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:14:35,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:14:35,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:14:35,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:14:35,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:14:35,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:14:35,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:14:35,734 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2024-11-27 20:14:36,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:14:36,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:14:36,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:14:36,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:14:36,026 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:14:36,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2024-11-27 20:14:38,991 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/60bf27ea2/ca06a48230274b9ca27ee51aaaf75748/FLAG3997cdddb [2024-11-27 20:14:39,379 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:14:39,379 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2024-11-27 20:14:39,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/60bf27ea2/ca06a48230274b9ca27ee51aaaf75748/FLAG3997cdddb [2024-11-27 20:14:39,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/data/60bf27ea2/ca06a48230274b9ca27ee51aaaf75748 [2024-11-27 20:14:39,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:14:39,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:14:39,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:14:39,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:14:39,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:14:39,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:14:39" (1/1) ... [2024-11-27 20:14:39,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ccb7035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:39, skipping insertion in model container [2024-11-27 20:14:39,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:14:39" (1/1) ... [2024-11-27 20:14:39,466 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:14:40,194 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,251 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,259 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,266 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,277 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,313 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,313 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,316 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,317 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,321 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,322 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,323 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,324 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,329 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:14:40,362 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 20:14:40,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:14:40,459 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,482 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,486 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,493 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,507 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,555 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,555 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,561 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,561 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,566 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,568 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,570 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,571 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,579 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 20:14:40,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:14:40,587 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:14:40,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:14:40,834 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:14:40,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40 WrapperNode [2024-11-27 20:14:40,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:14:40,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:14:40,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:14:40,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:14:40,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:40,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,001 INFO L138 Inliner]: procedures = 286, calls = 300, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1043 [2024-11-27 20:14:41,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:14:41,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:14:41,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:14:41,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:14:41,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,147 INFO L175 MemorySlicer]: Split 268 memory accesses to 4 slices as follows [2, 12, 34, 220]. 82 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 54 writes are split as follows [0, 1, 4, 49]. [2024-11-27 20:14:41,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,209 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,230 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:14:41,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:14:41,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:14:41,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:14:41,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (1/1) ... [2024-11-27 20:14:41,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:14:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:41,307 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:14:41,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-27 20:14:41,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-27 20:14:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 20:14:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-11-27 20:14:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:14:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-11-27 20:14:41,338 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-11-27 20:14:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:14:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:14:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:14:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:14:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-11-27 20:14:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-11-27 20:14:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:14:41,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:14:41,612 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:14:41,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:14:46,445 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2024-11-27 20:14:46,445 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:14:46,472 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:14:46,473 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-27 20:14:46,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:14:46 BoogieIcfgContainer [2024-11-27 20:14:46,473 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:14:46,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:14:46,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:14:46,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:14:46,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:14:39" (1/3) ... [2024-11-27 20:14:46,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5db44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:14:46, skipping insertion in model container [2024-11-27 20:14:46,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:14:40" (2/3) ... [2024-11-27 20:14:46,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5db44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:14:46, skipping insertion in model container [2024-11-27 20:14:46,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:14:46" (3/3) ... [2024-11-27 20:14:46,483 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2024-11-27 20:14:46,498 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:14:46,500 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test6-1.i that has 6 procedures, 1086 locations, 1 initial locations, 36 loop locations, and 522 error locations. [2024-11-27 20:14:46,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:14:46,564 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@53bbe0d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:14:46,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 522 error locations. [2024-11-27 20:14:46,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 541 states have (on average 2.195933456561922) internal successors, (1188), 1066 states have internal predecessors, (1188), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-27 20:14:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 20:14:46,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:46,575 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 20:14:46,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:14:46,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 85465, now seen corresponding path program 1 times [2024-11-27 20:14:46,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:14:46,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758915699] [2024-11-27 20:14:46,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:46,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:46,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:46,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:46,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:14:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:46,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:14:46,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:46,848 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 [2024-11-27 20:14:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:46,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:46,884 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:14:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758915699] [2024-11-27 20:14:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758915699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:46,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:14:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011070799] [2024-11-27 20:14:46,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:46,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:14:46,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:46,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:46,922 INFO L87 Difference]: Start difference. First operand has 1086 states, 541 states have (on average 2.195933456561922) internal successors, (1188), 1066 states have internal predecessors, (1188), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:49,071 INFO L93 Difference]: Finished difference Result 1166 states and 1236 transitions. [2024-11-27 20:14:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:49,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-27 20:14:49,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:49,088 INFO L225 Difference]: With dead ends: 1166 [2024-11-27 20:14:49,088 INFO L226 Difference]: Without dead ends: 1164 [2024-11-27 20:14:49,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:49,092 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 721 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:49,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1043 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 20:14:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-11-27 20:14:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1107. [2024-11-27 20:14:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 577 states have (on average 2.0554592720970537) internal successors, (1186), 1089 states have internal predecessors, (1186), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:14:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1216 transitions. [2024-11-27 20:14:49,190 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1216 transitions. Word has length 3 [2024-11-27 20:14:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:49,191 INFO L471 AbstractCegarLoop]: Abstraction has 1107 states and 1216 transitions. [2024-11-27 20:14:49,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1216 transitions. [2024-11-27 20:14:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 20:14:49,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:49,191 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 20:14:49,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:14:49,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:49,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:14:49,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 85466, now seen corresponding path program 1 times [2024-11-27 20:14:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:14:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913261256] [2024-11-27 20:14:49,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:49,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:49,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:49,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:49,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:14:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:49,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:14:49,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:49,583 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 [2024-11-27 20:14:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:49,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:49,601 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:14:49,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913261256] [2024-11-27 20:14:49,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913261256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:49,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:49,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:14:49,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138839619] [2024-11-27 20:14:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:49,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:14:49,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:14:49,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:14:49,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:49,603 INFO L87 Difference]: Start difference. First operand 1107 states and 1216 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:52,816 INFO L93 Difference]: Finished difference Result 1512 states and 1658 transitions. [2024-11-27 20:14:52,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:14:52,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-27 20:14:52,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:52,825 INFO L225 Difference]: With dead ends: 1512 [2024-11-27 20:14:52,825 INFO L226 Difference]: Without dead ends: 1512 [2024-11-27 20:14:52,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:14:52,827 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 429 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:52,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1540 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 20:14:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2024-11-27 20:14:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1320. [2024-11-27 20:14:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 789 states have (on average 2.041825095057034) internal successors, (1611), 1300 states have internal predecessors, (1611), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:14:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1645 transitions. [2024-11-27 20:14:52,881 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1645 transitions. Word has length 3 [2024-11-27 20:14:52,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:52,881 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1645 transitions. [2024-11-27 20:14:52,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:14:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1645 transitions. [2024-11-27 20:14:52,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:14:52,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:52,882 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:52,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:14:53,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:53,083 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:14:53,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:14:53,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1875000221, now seen corresponding path program 1 times [2024-11-27 20:14:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:14:53,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143919504] [2024-11-27 20:14:53,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:14:53,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:14:53,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:14:53,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:14:53,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:14:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:14:53,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:14:53,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:53,302 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 [2024-11-27 20:14:53,383 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-27 20:14:53,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-27 20:14:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:14:53,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:14:53,506 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:14:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143919504] [2024-11-27 20:14:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143919504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:14:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:14:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:14:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837063467] [2024-11-27 20:14:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:14:53,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:14:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:14:53,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:14:53,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:53,510 INFO L87 Difference]: Start difference. First operand 1320 states and 1645 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-27 20:14:59,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:14:59,754 INFO L93 Difference]: Finished difference Result 2204 states and 2405 transitions. [2024-11-27 20:14:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:14:59,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2024-11-27 20:14:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:14:59,764 INFO L225 Difference]: With dead ends: 2204 [2024-11-27 20:14:59,764 INFO L226 Difference]: Without dead ends: 2204 [2024-11-27 20:14:59,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:14:59,765 INFO L435 NwaCegarLoop]: 1055 mSDtfsCounter, 1152 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:59,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 2243 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-27 20:14:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-27 20:14:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1470. [2024-11-27 20:14:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 939 states have (on average 2.022364217252396) internal successors, (1899), 1450 states have internal predecessors, (1899), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:14:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1933 transitions. [2024-11-27 20:14:59,815 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1933 transitions. Word has length 9 [2024-11-27 20:14:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:14:59,816 INFO L471 AbstractCegarLoop]: Abstraction has 1470 states and 1933 transitions. [2024-11-27 20:14:59,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-27 20:14:59,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1933 transitions. [2024-11-27 20:14:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 20:14:59,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:14:59,817 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:14:59,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:15:00,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:00,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:00,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2004535318, now seen corresponding path program 1 times [2024-11-27 20:15:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606557427] [2024-11-27 20:15:00,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:00,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:00,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:00,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:00,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:15:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:00,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:15:00,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:00,257 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 [2024-11-27 20:15:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:00,294 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:00,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606557427] [2024-11-27 20:15:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606557427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:00,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:00,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:00,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230341351] [2024-11-27 20:15:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:00,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:00,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:00,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:00,296 INFO L87 Difference]: Start difference. First operand 1470 states and 1933 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-27 20:15:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:04,148 INFO L93 Difference]: Finished difference Result 2018 states and 2709 transitions. [2024-11-27 20:15:04,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 10 [2024-11-27 20:15:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:04,157 INFO L225 Difference]: With dead ends: 2018 [2024-11-27 20:15:04,157 INFO L226 Difference]: Without dead ends: 2018 [2024-11-27 20:15:04,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:04,158 INFO L435 NwaCegarLoop]: 1017 mSDtfsCounter, 925 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:04,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2098 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-27 20:15:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2024-11-27 20:15:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1425. [2024-11-27 20:15:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 939 states have (on average 1.959531416400426) internal successors, (1840), 1405 states have internal predecessors, (1840), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:15:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1874 transitions. [2024-11-27 20:15:04,203 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1874 transitions. Word has length 10 [2024-11-27 20:15:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:04,203 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1874 transitions. [2024-11-27 20:15:04,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-27 20:15:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1874 transitions. [2024-11-27 20:15:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 20:15:04,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:04,204 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:04,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:04,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:04,408 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:04,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2004535319, now seen corresponding path program 1 times [2024-11-27 20:15:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078066636] [2024-11-27 20:15:04,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:04,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:04,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:04,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:04,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:15:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:04,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:15:04,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:04,635 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 [2024-11-27 20:15:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:04,685 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:04,685 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078066636] [2024-11-27 20:15:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078066636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:04,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351332498] [2024-11-27 20:15:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:04,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:04,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:04,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:04,686 INFO L87 Difference]: Start difference. First operand 1425 states and 1874 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-27 20:15:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:09,381 INFO L93 Difference]: Finished difference Result 2083 states and 2732 transitions. [2024-11-27 20:15:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:09,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 10 [2024-11-27 20:15:09,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:09,390 INFO L225 Difference]: With dead ends: 2083 [2024-11-27 20:15:09,390 INFO L226 Difference]: Without dead ends: 2083 [2024-11-27 20:15:09,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:09,392 INFO L435 NwaCegarLoop]: 1193 mSDtfsCounter, 705 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:09,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 2453 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 20:15:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2024-11-27 20:15:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1417. [2024-11-27 20:15:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 941 states have (on average 1.9319872476089266) internal successors, (1818), 1397 states have internal predecessors, (1818), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:15:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1852 transitions. [2024-11-27 20:15:09,430 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1852 transitions. Word has length 10 [2024-11-27 20:15:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:09,430 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 1852 transitions. [2024-11-27 20:15:09,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2024-11-27 20:15:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1852 transitions. [2024-11-27 20:15:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 20:15:09,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:09,431 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:09,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:15:09,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:09,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:09,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:09,633 INFO L85 PathProgramCache]: Analyzing trace with hash -573654689, now seen corresponding path program 1 times [2024-11-27 20:15:09,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749188009] [2024-11-27 20:15:09,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:09,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:09,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:09,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:09,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:15:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:09,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:15:09,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:09,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:09,914 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:09,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749188009] [2024-11-27 20:15:09,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749188009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995028842] [2024-11-27 20:15:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:09,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:09,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:09,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:09,917 INFO L87 Difference]: Start difference. First operand 1417 states and 1852 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:10,798 INFO L93 Difference]: Finished difference Result 1865 states and 2410 transitions. [2024-11-27 20:15:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:10,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 20:15:10,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:10,805 INFO L225 Difference]: With dead ends: 1865 [2024-11-27 20:15:10,805 INFO L226 Difference]: Without dead ends: 1865 [2024-11-27 20:15:10,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:10,807 INFO L435 NwaCegarLoop]: 1156 mSDtfsCounter, 456 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:10,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 3198 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:15:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2024-11-27 20:15:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1673. [2024-11-27 20:15:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1197 states have (on average 1.9473684210526316) internal successors, (2331), 1653 states have internal predecessors, (2331), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:15:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2365 transitions. [2024-11-27 20:15:10,851 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2365 transitions. Word has length 13 [2024-11-27 20:15:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:10,852 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2365 transitions. [2024-11-27 20:15:10,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2365 transitions. [2024-11-27 20:15:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 20:15:10,854 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:10,854 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:10,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:15:11,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:11,055 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:11,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1300891885, now seen corresponding path program 1 times [2024-11-27 20:15:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330424873] [2024-11-27 20:15:11,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:11,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:11,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:11,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:11,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:15:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:11,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:15:11,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:11,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:11,306 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330424873] [2024-11-27 20:15:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330424873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745362633] [2024-11-27 20:15:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:11,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:11,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:11,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:11,308 INFO L87 Difference]: Start difference. First operand 1673 states and 2365 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 20:15:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:13,756 INFO L93 Difference]: Finished difference Result 1719 states and 2312 transitions. [2024-11-27 20:15:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-27 20:15:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:13,761 INFO L225 Difference]: With dead ends: 1719 [2024-11-27 20:15:13,761 INFO L226 Difference]: Without dead ends: 1719 [2024-11-27 20:15:13,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:13,762 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 739 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:13,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1621 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:15:13,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-27 20:15:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1650. [2024-11-27 20:15:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1197 states have (on average 1.8705096073517127) internal successors, (2239), 1630 states have internal predecessors, (2239), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:15:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2273 transitions. [2024-11-27 20:15:13,796 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2273 transitions. Word has length 13 [2024-11-27 20:15:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:13,796 INFO L471 AbstractCegarLoop]: Abstraction has 1650 states and 2273 transitions. [2024-11-27 20:15:13,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 20:15:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2273 transitions. [2024-11-27 20:15:13,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 20:15:13,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:13,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:13,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:15:14,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:14,001 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr323REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:14,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1300891884, now seen corresponding path program 1 times [2024-11-27 20:15:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931210829] [2024-11-27 20:15:14,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:14,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:14,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:14,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:14,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:15:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:14,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:15:14,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:14,195 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 [2024-11-27 20:15:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:14,305 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:14,305 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931210829] [2024-11-27 20:15:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931210829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:14,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:14,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833957251] [2024-11-27 20:15:14,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:14,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:14,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:14,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:14,306 INFO L87 Difference]: Start difference. First operand 1650 states and 2273 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 20:15:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:18,314 INFO L93 Difference]: Finished difference Result 1775 states and 2211 transitions. [2024-11-27 20:15:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:18,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-27 20:15:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:18,320 INFO L225 Difference]: With dead ends: 1775 [2024-11-27 20:15:18,320 INFO L226 Difference]: Without dead ends: 1775 [2024-11-27 20:15:18,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:18,321 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 408 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:18,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1953 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-27 20:15:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2024-11-27 20:15:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1599. [2024-11-27 20:15:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1146 states have (on average 1.869109947643979) internal successors, (2142), 1579 states have internal predecessors, (2142), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 20:15:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2176 transitions. [2024-11-27 20:15:18,355 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2176 transitions. Word has length 13 [2024-11-27 20:15:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:18,356 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 2176 transitions. [2024-11-27 20:15:18,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 20:15:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2176 transitions. [2024-11-27 20:15:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 20:15:18,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:18,357 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:18,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:15:18,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:18,557 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:18,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash -891307863, now seen corresponding path program 1 times [2024-11-27 20:15:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:18,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771909259] [2024-11-27 20:15:18,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:18,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:18,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:18,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:15:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:18,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:15:18,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:18,743 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:15:18,743 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:15:18,744 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:15:18,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-27 20:15:18,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:15:18,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-27 20:15:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:18,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:18,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771909259] [2024-11-27 20:15:18,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771909259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:18,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:18,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120058069] [2024-11-27 20:15:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:18,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:18,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:18,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:18,830 INFO L87 Difference]: Start difference. First operand 1599 states and 2176 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:19,641 INFO L93 Difference]: Finished difference Result 2158 states and 2567 transitions. [2024-11-27 20:15:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:19,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-27 20:15:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:19,646 INFO L225 Difference]: With dead ends: 2158 [2024-11-27 20:15:19,646 INFO L226 Difference]: Without dead ends: 2158 [2024-11-27 20:15:19,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:19,646 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 920 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:19,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 3003 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:15:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2024-11-27 20:15:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1279. [2024-11-27 20:15:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 828 states have (on average 1.8671497584541064) internal successors, (1546), 1261 states have internal predecessors, (1546), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:15:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1576 transitions. [2024-11-27 20:15:19,680 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1576 transitions. Word has length 16 [2024-11-27 20:15:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:19,680 INFO L471 AbstractCegarLoop]: Abstraction has 1279 states and 1576 transitions. [2024-11-27 20:15:19,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1576 transitions. [2024-11-27 20:15:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:15:19,684 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:19,684 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:19,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:15:19,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:19,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:19,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash 418110181, now seen corresponding path program 1 times [2024-11-27 20:15:19,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:19,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123488143] [2024-11-27 20:15:19,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:19,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:19,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:19,891 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:19,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:15:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:20,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:15:20,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:20,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:20,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123488143] [2024-11-27 20:15:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123488143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042545337] [2024-11-27 20:15:20,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:20,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:20,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:20,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:20,153 INFO L87 Difference]: Start difference. First operand 1279 states and 1576 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-27 20:15:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:23,127 INFO L93 Difference]: Finished difference Result 1705 states and 2105 transitions. [2024-11-27 20:15:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:15:23,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-27 20:15:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:23,134 INFO L225 Difference]: With dead ends: 1705 [2024-11-27 20:15:23,134 INFO L226 Difference]: Without dead ends: 1705 [2024-11-27 20:15:23,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:23,135 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 948 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:23,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1352 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-27 20:15:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2024-11-27 20:15:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1256. [2024-11-27 20:15:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 828 states have (on average 1.8115942028985508) internal successors, (1500), 1238 states have internal predecessors, (1500), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:15:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1530 transitions. [2024-11-27 20:15:23,158 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1530 transitions. Word has length 20 [2024-11-27 20:15:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:23,158 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1530 transitions. [2024-11-27 20:15:23,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-27 20:15:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1530 transitions. [2024-11-27 20:15:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:15:23,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:23,159 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:23,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 20:15:23,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:23,360 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:23,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash 418110182, now seen corresponding path program 1 times [2024-11-27 20:15:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:23,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600084245] [2024-11-27 20:15:23,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:23,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:23,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:23,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:23,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:15:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:23,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:15:23,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:23,597 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 [2024-11-27 20:15:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:23,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:23,739 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600084245] [2024-11-27 20:15:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600084245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:23,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:23,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288849317] [2024-11-27 20:15:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:23,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:23,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:23,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:23,740 INFO L87 Difference]: Start difference. First operand 1256 states and 1530 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-27 20:15:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:29,116 INFO L93 Difference]: Finished difference Result 1975 states and 2407 transitions. [2024-11-27 20:15:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:15:29,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-27 20:15:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:29,121 INFO L225 Difference]: With dead ends: 1975 [2024-11-27 20:15:29,121 INFO L226 Difference]: Without dead ends: 1975 [2024-11-27 20:15:29,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:29,122 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 803 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:29,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 3214 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-27 20:15:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2024-11-27 20:15:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1372. [2024-11-27 20:15:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 944 states have (on average 1.7372881355932204) internal successors, (1640), 1354 states have internal predecessors, (1640), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:15:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1670 transitions. [2024-11-27 20:15:29,143 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1670 transitions. Word has length 20 [2024-11-27 20:15:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:29,143 INFO L471 AbstractCegarLoop]: Abstraction has 1372 states and 1670 transitions. [2024-11-27 20:15:29,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-27 20:15:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1670 transitions. [2024-11-27 20:15:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 20:15:29,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:29,145 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:29,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:15:29,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:29,349 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:29,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:29,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2062687914, now seen corresponding path program 1 times [2024-11-27 20:15:29,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:29,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949473625] [2024-11-27 20:15:29,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:29,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:29,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:29,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:15:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:29,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:15:29,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:29,640 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 [2024-11-27 20:15:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:29,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:30,628 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:30,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949473625] [2024-11-27 20:15:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949473625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:30,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:15:30,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-11-27 20:15:30,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115460914] [2024-11-27 20:15:30,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:30,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:15:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:30,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:15:30,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:15:30,630 INFO L87 Difference]: Start difference. First operand 1372 states and 1670 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-27 20:15:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:45,573 INFO L93 Difference]: Finished difference Result 2337 states and 2903 transitions. [2024-11-27 20:15:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:15:45,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 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 39 [2024-11-27 20:15:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:45,581 INFO L225 Difference]: With dead ends: 2337 [2024-11-27 20:15:45,581 INFO L226 Difference]: Without dead ends: 2337 [2024-11-27 20:15:45,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:15:45,582 INFO L435 NwaCegarLoop]: 1267 mSDtfsCounter, 2454 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:45,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 5049 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3867 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2024-11-27 20:15:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2024-11-27 20:15:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1538. [2024-11-27 20:15:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1110 states have (on average 1.6882882882882884) internal successors, (1874), 1520 states have internal predecessors, (1874), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:15:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1904 transitions. [2024-11-27 20:15:45,618 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1904 transitions. Word has length 39 [2024-11-27 20:15:45,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:45,618 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1904 transitions. [2024-11-27 20:15:45,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-11-27 20:15:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1904 transitions. [2024-11-27 20:15:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 20:15:45,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:45,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:45,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:15:45,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:45,821 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:45,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash -705673513, now seen corresponding path program 1 times [2024-11-27 20:15:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683025473] [2024-11-27 20:15:45,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:45,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:45,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:45,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:45,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:15:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:46,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:15:46,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:46,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:46,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:46,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683025473] [2024-11-27 20:15:46,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683025473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:46,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:46,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458141718] [2024-11-27 20:15:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:46,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:15:46,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:46,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:15:46,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:15:46,187 INFO L87 Difference]: Start difference. First operand 1538 states and 1904 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:46,325 INFO L93 Difference]: Finished difference Result 1223 states and 1464 transitions. [2024-11-27 20:15:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:46,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-27 20:15:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:46,330 INFO L225 Difference]: With dead ends: 1223 [2024-11-27 20:15:46,330 INFO L226 Difference]: Without dead ends: 1223 [2024-11-27 20:15:46,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:46,332 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 56 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:46,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2822 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:15:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-27 20:15:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1221. [2024-11-27 20:15:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 816 states have (on average 1.7549019607843137) internal successors, (1432), 1203 states have internal predecessors, (1432), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-27 20:15:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1462 transitions. [2024-11-27 20:15:46,352 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1462 transitions. Word has length 56 [2024-11-27 20:15:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:46,353 INFO L471 AbstractCegarLoop]: Abstraction has 1221 states and 1462 transitions. [2024-11-27 20:15:46,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1462 transitions. [2024-11-27 20:15:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 20:15:46,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:46,357 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:46,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:15:46,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:46,558 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:46,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1129088035, now seen corresponding path program 1 times [2024-11-27 20:15:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874879722] [2024-11-27 20:15:46,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:46,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:46,561 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:46,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:15:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:46,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 20:15:46,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:46,937 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-27 20:15:46,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 20:15:47,007 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-27 20:15:47,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2024-11-27 20:15:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:47,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:47,448 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:47,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874879722] [2024-11-27 20:15:47,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874879722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:47,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:47,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:47,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971909238] [2024-11-27 20:15:47,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:47,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:15:47,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:47,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:15:47,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:47,450 INFO L87 Difference]: Start difference. First operand 1221 states and 1462 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:51,019 INFO L93 Difference]: Finished difference Result 2190 states and 2624 transitions. [2024-11-27 20:15:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-27 20:15:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:51,026 INFO L225 Difference]: With dead ends: 2190 [2024-11-27 20:15:51,026 INFO L226 Difference]: Without dead ends: 2190 [2024-11-27 20:15:51,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:15:51,027 INFO L435 NwaCegarLoop]: 617 mSDtfsCounter, 2437 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:51,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 1706 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:15:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2024-11-27 20:15:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1697. [2024-11-27 20:15:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1277 states have (on average 1.7517619420516837) internal successors, (2237), 1667 states have internal predecessors, (2237), 29 states have call successors, (29), 9 states have call predecessors, (29), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-27 20:15:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2291 transitions. [2024-11-27 20:15:51,051 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2291 transitions. Word has length 64 [2024-11-27 20:15:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:51,051 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2291 transitions. [2024-11-27 20:15:51,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2291 transitions. [2024-11-27 20:15:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 20:15:51,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:51,052 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:51,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 20:15:51,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:51,253 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:51,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1129088036, now seen corresponding path program 1 times [2024-11-27 20:15:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:51,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539967971] [2024-11-27 20:15:51,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:51,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:51,257 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:51,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 20:15:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:51,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 20:15:51,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:51,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:15:51,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-27 20:15:51,768 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-27 20:15:51,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-27 20:15:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:52,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:52,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:52,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539967971] [2024-11-27 20:15:52,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539967971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:52,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:52,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:15:52,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027115445] [2024-11-27 20:15:52,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:52,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:15:52,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:52,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:15:52,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:15:52,710 INFO L87 Difference]: Start difference. First operand 1697 states and 2291 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:58,777 INFO L93 Difference]: Finished difference Result 1702 states and 2297 transitions. [2024-11-27 20:15:58,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:15:58,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-27 20:15:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:58,784 INFO L225 Difference]: With dead ends: 1702 [2024-11-27 20:15:58,784 INFO L226 Difference]: Without dead ends: 1702 [2024-11-27 20:15:58,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:15:58,785 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 80 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:58,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2810 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-27 20:15:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2024-11-27 20:15:58,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2024-11-27 20:15:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1281 states have (on average 1.7494145199063231) internal successors, (2241), 1671 states have internal predecessors, (2241), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-27 20:15:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2297 transitions. [2024-11-27 20:15:58,823 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2297 transitions. Word has length 64 [2024-11-27 20:15:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:58,823 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2297 transitions. [2024-11-27 20:15:58,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2297 transitions. [2024-11-27 20:15:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 20:15:58,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:58,824 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:58,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:59,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:59,025 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:59,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1186416219, now seen corresponding path program 1 times [2024-11-27 20:15:59,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881823673] [2024-11-27 20:15:59,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:59,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:59,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:59,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:59,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 20:15:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:59,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:15:59,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:15:59,576 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:59,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:59,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881823673] [2024-11-27 20:15:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881823673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:59,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:59,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:15:59,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838588733] [2024-11-27 20:15:59,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:59,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:15:59,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:59,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:15:59,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:15:59,577 INFO L87 Difference]: Start difference. First operand 1702 states and 2297 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:59,707 INFO L93 Difference]: Finished difference Result 1710 states and 2305 transitions. [2024-11-27 20:15:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:15:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 20:15:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:59,713 INFO L225 Difference]: With dead ends: 1710 [2024-11-27 20:15:59,713 INFO L226 Difference]: Without dead ends: 1710 [2024-11-27 20:15:59,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:15:59,714 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 25 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:59,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5911 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:15:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2024-11-27 20:15:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1709. [2024-11-27 20:15:59,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1286 states have (on average 1.7465007776049766) internal successors, (2246), 1677 states have internal predecessors, (2246), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:15:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2304 transitions. [2024-11-27 20:15:59,744 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2304 transitions. Word has length 72 [2024-11-27 20:15:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:59,745 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2304 transitions. [2024-11-27 20:15:59,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:15:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2304 transitions. [2024-11-27 20:15:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 20:15:59,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:59,746 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:59,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:59,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:59,950 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:15:59,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2020879778, now seen corresponding path program 1 times [2024-11-27 20:15:59,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:59,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287948555] [2024-11-27 20:15:59,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:15:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:59,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:15:59,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 20:16:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:00,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:16:00,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:00,448 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-27 20:16:00,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 20:16:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:00,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:00,454 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:00,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287948555] [2024-11-27 20:16:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287948555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:00,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:00,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:16:00,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582973353] [2024-11-27 20:16:00,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:00,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:16:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:00,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:16:00,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:16:00,456 INFO L87 Difference]: Start difference. First operand 1709 states and 2304 transitions. Second operand has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:16:05,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:16:09,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:09,737 INFO L93 Difference]: Finished difference Result 2147 states and 2865 transitions. [2024-11-27 20:16:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:16:09,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2024-11-27 20:16:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:09,742 INFO L225 Difference]: With dead ends: 2147 [2024-11-27 20:16:09,742 INFO L226 Difference]: Without dead ends: 2147 [2024-11-27 20:16:09,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:16:09,743 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 820 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:09,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1769 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1638 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2024-11-27 20:16:09,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-11-27 20:16:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1706. [2024-11-27 20:16:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1286 states have (on average 1.7418351477449456) internal successors, (2240), 1674 states have internal predecessors, (2240), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:16:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2298 transitions. [2024-11-27 20:16:09,774 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2298 transitions. Word has length 75 [2024-11-27 20:16:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:09,775 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 2298 transitions. [2024-11-27 20:16:09,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:16:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2298 transitions. [2024-11-27 20:16:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 20:16:09,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:09,776 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:09,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:09,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:09,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:09,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2020879779, now seen corresponding path program 1 times [2024-11-27 20:16:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070798798] [2024-11-27 20:16:09,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:09,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:09,979 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:09,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 20:16:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:10,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:16:10,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:10,321 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 [2024-11-27 20:16:10,934 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2024-11-27 20:16:10,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:16:10,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-27 20:16:10,976 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 20:16:10,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 20:16:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:10,981 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:10,981 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:10,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070798798] [2024-11-27 20:16:10,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070798798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:10,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:10,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:16:10,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020144759] [2024-11-27 20:16:10,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:10,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:16:10,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:10,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:16:10,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2024-11-27 20:16:10,983 INFO L87 Difference]: Start difference. First operand 1706 states and 2298 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:16:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:18,084 INFO L93 Difference]: Finished difference Result 2880 states and 3836 transitions. [2024-11-27 20:16:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:16:18,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2024-11-27 20:16:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:18,093 INFO L225 Difference]: With dead ends: 2880 [2024-11-27 20:16:18,093 INFO L226 Difference]: Without dead ends: 2880 [2024-11-27 20:16:18,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2024-11-27 20:16:18,093 INFO L435 NwaCegarLoop]: 1035 mSDtfsCounter, 1580 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 4858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1891 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:18,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 2657 Invalid, 4858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2940 Invalid, 0 Unknown, 1891 Unchecked, 7.0s Time] [2024-11-27 20:16:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2024-11-27 20:16:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1698. [2024-11-27 20:16:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1286 states have (on average 1.729393468118196) internal successors, (2224), 1666 states have internal predecessors, (2224), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:16:18,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2282 transitions. [2024-11-27 20:16:18,126 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2282 transitions. Word has length 75 [2024-11-27 20:16:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:18,127 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 2282 transitions. [2024-11-27 20:16:18,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:16:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2282 transitions. [2024-11-27 20:16:18,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 20:16:18,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:18,128 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:18,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-27 20:16:18,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:18,329 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:18,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash 56322763, now seen corresponding path program 1 times [2024-11-27 20:16:18,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:18,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548357469] [2024-11-27 20:16:18,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:18,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:18,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:18,331 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:18,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 20:16:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:18,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:16:18,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:18,671 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 [2024-11-27 20:16:18,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:16:18,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:16:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:18,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:18,796 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:18,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548357469] [2024-11-27 20:16:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548357469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:18,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:18,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:16:18,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836360225] [2024-11-27 20:16:18,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:18,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:16:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:18,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:16:18,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:16:18,798 INFO L87 Difference]: Start difference. First operand 1698 states and 2282 transitions. Second operand has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 20:16:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:23,806 INFO L93 Difference]: Finished difference Result 1713 states and 2298 transitions. [2024-11-27 20:16:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:16:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2024-11-27 20:16:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:23,811 INFO L225 Difference]: With dead ends: 1713 [2024-11-27 20:16:23,812 INFO L226 Difference]: Without dead ends: 1713 [2024-11-27 20:16:23,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:16:23,812 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 16 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:23,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4244 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-27 20:16:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-11-27 20:16:23,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1712. [2024-11-27 20:16:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1298 states have (on average 1.7257318952234206) internal successors, (2240), 1678 states have internal predecessors, (2240), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:16:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2298 transitions. [2024-11-27 20:16:23,860 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2298 transitions. Word has length 82 [2024-11-27 20:16:23,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:23,860 INFO L471 AbstractCegarLoop]: Abstraction has 1712 states and 2298 transitions. [2024-11-27 20:16:23,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-27 20:16:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2298 transitions. [2024-11-27 20:16:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 20:16:23,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:23,861 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:23,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 20:16:24,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:24,062 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:24,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1746005729, now seen corresponding path program 1 times [2024-11-27 20:16:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789578530] [2024-11-27 20:16:24,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:24,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:24,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:24,065 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:24,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 20:16:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:24,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:16:24,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:24,443 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 [2024-11-27 20:16:24,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:16:24,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-27 20:16:24,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-27 20:16:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:24,722 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:24,722 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:24,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789578530] [2024-11-27 20:16:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789578530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:24,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:16:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514011768] [2024-11-27 20:16:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:24,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:16:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:24,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:16:24,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:16:24,726 INFO L87 Difference]: Start difference. First operand 1712 states and 2298 transitions. Second operand has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:16:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:31,365 INFO L93 Difference]: Finished difference Result 1712 states and 2296 transitions. [2024-11-27 20:16:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:16:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2024-11-27 20:16:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:31,370 INFO L225 Difference]: With dead ends: 1712 [2024-11-27 20:16:31,371 INFO L226 Difference]: Without dead ends: 1712 [2024-11-27 20:16:31,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:16:31,371 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 13 mSDsluCounter, 3933 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4889 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:31,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4889 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-27 20:16:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2024-11-27 20:16:31,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1712. [2024-11-27 20:16:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1298 states have (on average 1.724191063174114) internal successors, (2238), 1678 states have internal predecessors, (2238), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:16:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2296 transitions. [2024-11-27 20:16:31,397 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2296 transitions. Word has length 83 [2024-11-27 20:16:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:31,397 INFO L471 AbstractCegarLoop]: Abstraction has 1712 states and 2296 transitions. [2024-11-27 20:16:31,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 20:16:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2296 transitions. [2024-11-27 20:16:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-27 20:16:31,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:31,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:31,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 20:16:31,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:31,599 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:31,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1067569125, now seen corresponding path program 1 times [2024-11-27 20:16:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616471646] [2024-11-27 20:16:31,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:31,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:31,605 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:31,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 20:16:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:31,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:16:32,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:32,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:16:32,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-27 20:16:32,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:32,171 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:32,171 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:32,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616471646] [2024-11-27 20:16:32,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616471646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:32,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:32,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:16:32,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858486009] [2024-11-27 20:16:32,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:32,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:16:32,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:32,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:16:32,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:16:32,173 INFO L87 Difference]: Start difference. First operand 1712 states and 2296 transitions. Second operand has 8 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:16:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:36,922 INFO L93 Difference]: Finished difference Result 1743 states and 2336 transitions. [2024-11-27 20:16:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:16:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 90 [2024-11-27 20:16:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:36,926 INFO L225 Difference]: With dead ends: 1743 [2024-11-27 20:16:36,927 INFO L226 Difference]: Without dead ends: 1743 [2024-11-27 20:16:36,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:16:36,927 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 43 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:36,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3914 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 20:16:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2024-11-27 20:16:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1726. [2024-11-27 20:16:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1310 states have (on average 1.7206106870229008) internal successors, (2254), 1690 states have internal predecessors, (2254), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 24 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 20:16:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2314 transitions. [2024-11-27 20:16:36,968 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2314 transitions. Word has length 90 [2024-11-27 20:16:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:36,969 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2314 transitions. [2024-11-27 20:16:36,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:16:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2314 transitions. [2024-11-27 20:16:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-27 20:16:36,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:36,970 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:36,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:37,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:37,174 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:37,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1067569124, now seen corresponding path program 1 times [2024-11-27 20:16:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:37,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219005220] [2024-11-27 20:16:37,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:37,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:37,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:37,177 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:37,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 20:16:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:37,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:16:37,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:37,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:37,575 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:37,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219005220] [2024-11-27 20:16:37,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219005220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:37,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:16:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161535087] [2024-11-27 20:16:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:37,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:16:37,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:37,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:16:37,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:16:37,577 INFO L87 Difference]: Start difference. First operand 1726 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:16:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:37,683 INFO L93 Difference]: Finished difference Result 1728 states and 2314 transitions. [2024-11-27 20:16:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:16:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 90 [2024-11-27 20:16:37,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:37,689 INFO L225 Difference]: With dead ends: 1728 [2024-11-27 20:16:37,690 INFO L226 Difference]: Without dead ends: 1722 [2024-11-27 20:16:37,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:16:37,692 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 3 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:37,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3844 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:16:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-27 20:16:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1722. [2024-11-27 20:16:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1306 states have (on average 1.7212863705972434) internal successors, (2248), 1688 states have internal predecessors, (2248), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 20:16:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2308 transitions. [2024-11-27 20:16:37,719 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2308 transitions. Word has length 90 [2024-11-27 20:16:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:37,720 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2308 transitions. [2024-11-27 20:16:37,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:16:37,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2308 transitions. [2024-11-27 20:16:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 20:16:37,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:37,723 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:37,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 20:16:37,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:37,924 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:37,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1246301779, now seen corresponding path program 1 times [2024-11-27 20:16:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100971183] [2024-11-27 20:16:37,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:37,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:37,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:37,928 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:37,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 20:16:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:38,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:16:38,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:38,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:16:38,518 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100971183] [2024-11-27 20:16:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100971183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:38,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:16:38,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-27 20:16:38,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880531108] [2024-11-27 20:16:38,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:38,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:16:38,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:38,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:16:38,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:16:38,520 INFO L87 Difference]: Start difference. First operand 1722 states and 2308 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 20:16:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:38,767 INFO L93 Difference]: Finished difference Result 1748 states and 2338 transitions. [2024-11-27 20:16:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 20:16:38,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 91 [2024-11-27 20:16:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:38,776 INFO L225 Difference]: With dead ends: 1748 [2024-11-27 20:16:38,777 INFO L226 Difference]: Without dead ends: 1736 [2024-11-27 20:16:38,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:16:38,779 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 17 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4807 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:38,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4807 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:16:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-11-27 20:16:38,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1730. [2024-11-27 20:16:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1314 states have (on average 1.7184170471841704) internal successors, (2258), 1696 states have internal predecessors, (2258), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 20:16:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2318 transitions. [2024-11-27 20:16:38,811 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2318 transitions. Word has length 91 [2024-11-27 20:16:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:38,811 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 2318 transitions. [2024-11-27 20:16:38,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 20:16:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2318 transitions. [2024-11-27 20:16:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 20:16:38,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:38,813 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:38,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 20:16:39,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:39,014 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:16:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1320483685, now seen corresponding path program 2 times [2024-11-27 20:16:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068029529] [2024-11-27 20:16:39,015 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:16:39,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:16:39,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:16:39,018 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:16:39,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 20:17:23,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:17:23,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:23,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-27 20:17:23,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:23,368 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 20:17:23,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 20:17:23,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-27 20:17:23,664 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-27 20:17:23,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-27 20:17:23,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-27 20:17:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:17:23,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:23,860 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-27 20:17:23,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-27 20:17:23,868 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1755 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem71#1.base| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_main_#t~mem71#1.base| v_ArrVal_1755) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-27 20:17:23,871 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:17:23,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068029529] [2024-11-27 20:17:23,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068029529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:23,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1273809297] [2024-11-27 20:17:23,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:17:23,871 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:17:23,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:17:23,877 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:17:23,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-27 20:17:26,676 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:17:26,676 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:17:26,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:17:26,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:27,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:27,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1273809297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:27,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:17:27,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 29 [2024-11-27 20:17:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476799928] [2024-11-27 20:17:27,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:27,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:17:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:17:27,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:17:27,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=756, Unknown=1, NotChecked=56, Total=930 [2024-11-27 20:17:27,527 INFO L87 Difference]: Start difference. First operand 1730 states and 2318 transitions. Second operand has 29 states, 28 states have (on average 6.178571428571429) internal successors, (173), 27 states have internal predecessors, (173), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-27 20:17:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:45,523 INFO L93 Difference]: Finished difference Result 2212 states and 2939 transitions. [2024-11-27 20:17:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-27 20:17:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.178571428571429) internal successors, (173), 27 states have internal predecessors, (173), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 94 [2024-11-27 20:17:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:45,530 INFO L225 Difference]: With dead ends: 2212 [2024-11-27 20:17:45,530 INFO L226 Difference]: Without dead ends: 2200 [2024-11-27 20:17:45,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=750, Invalid=3945, Unknown=1, NotChecked=134, Total=4830 [2024-11-27 20:17:45,532 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 908 mSDsluCounter, 8670 mSDsCounter, 0 mSdLazyCounter, 9016 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 9187 SdHoareTripleChecker+Invalid, 9087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 9016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:45,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 9187 Invalid, 9087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 9016 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2024-11-27 20:17:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2024-11-27 20:17:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1747. [2024-11-27 20:17:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1332 states have (on average 1.7117117117117118) internal successors, (2280), 1713 states have internal predecessors, (2280), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 20:17:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2340 transitions. [2024-11-27 20:17:45,580 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2340 transitions. Word has length 94 [2024-11-27 20:17:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:45,580 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2340 transitions. [2024-11-27 20:17:45,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.178571428571429) internal successors, (173), 27 states have internal predecessors, (173), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-27 20:17:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2340 transitions. [2024-11-27 20:17:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 20:17:45,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:45,582 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:45,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 20:17:45,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-27 20:17:45,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:17:45,982 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:17:45,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2137289892, now seen corresponding path program 1 times [2024-11-27 20:17:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:17:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285812191] [2024-11-27 20:17:45,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:45,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:45,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:45,986 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:45,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 20:17:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:46,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:17:46,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:17:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:46,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:17:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:17:47,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:17:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285812191] [2024-11-27 20:17:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285812191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:17:47,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:17:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2024-11-27 20:17:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393307484] [2024-11-27 20:17:47,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:17:47,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 20:17:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:17:47,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 20:17:47,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:17:47,745 INFO L87 Difference]: Start difference. First operand 1747 states and 2340 transitions. Second operand has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 20:17:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:17:51,350 INFO L93 Difference]: Finished difference Result 1801 states and 2424 transitions. [2024-11-27 20:17:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:17:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 100 [2024-11-27 20:17:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:17:51,356 INFO L225 Difference]: With dead ends: 1801 [2024-11-27 20:17:51,356 INFO L226 Difference]: Without dead ends: 1783 [2024-11-27 20:17:51,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=854, Invalid=1696, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 20:17:51,358 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 64 mSDsluCounter, 11517 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 12481 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:17:51,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 12481 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:17:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2024-11-27 20:17:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1783. [2024-11-27 20:17:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1368 states have (on average 1.7002923976608186) internal successors, (2326), 1749 states have internal predecessors, (2326), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 20:17:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2386 transitions. [2024-11-27 20:17:51,388 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2386 transitions. Word has length 100 [2024-11-27 20:17:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:17:51,388 INFO L471 AbstractCegarLoop]: Abstraction has 1783 states and 2386 transitions. [2024-11-27 20:17:51,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 28 states have internal predecessors, (110), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 20:17:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2386 transitions. [2024-11-27 20:17:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 20:17:51,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:17:51,390 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:17:51,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 20:17:51,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:51,592 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:17:51,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:17:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1835505444, now seen corresponding path program 2 times [2024-11-27 20:17:51,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:17:51,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341233455] [2024-11-27 20:17:51,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:17:51,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:51,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:51,596 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:51,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 20:18:36,296 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:18:36,296 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:18:36,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 20:18:36,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:18:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:18:37,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:18:40,990 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:18:40,990 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:18:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341233455] [2024-11-27 20:18:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341233455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:18:40,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:18:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2024-11-27 20:18:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983023806] [2024-11-27 20:18:40,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:18:40,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-27 20:18:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:18:40,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-27 20:18:40,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 20:18:40,993 INFO L87 Difference]: Start difference. First operand 1783 states and 2386 transitions. Second operand has 52 states, 52 states have (on average 2.576923076923077) internal successors, (134), 52 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 20:19:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:02,506 INFO L93 Difference]: Finished difference Result 1873 states and 2542 transitions. [2024-11-27 20:19:02,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-27 20:19:02,507 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.576923076923077) internal successors, (134), 52 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 112 [2024-11-27 20:19:02,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:02,514 INFO L225 Difference]: With dead ends: 1873 [2024-11-27 20:19:02,514 INFO L226 Difference]: Without dead ends: 1855 [2024-11-27 20:19:02,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=3100, Invalid=6602, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 20:19:02,517 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 113 mSDsluCounter, 24935 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 25899 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:02,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 25899 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-27 20:19:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2024-11-27 20:19:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1855. [2024-11-27 20:19:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1440 states have (on average 1.6819444444444445) internal successors, (2422), 1821 states have internal predecessors, (2422), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-27 20:19:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2482 transitions. [2024-11-27 20:19:02,548 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2482 transitions. Word has length 112 [2024-11-27 20:19:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:02,549 INFO L471 AbstractCegarLoop]: Abstraction has 1855 states and 2482 transitions. [2024-11-27 20:19:02,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.576923076923077) internal successors, (134), 52 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 20:19:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2482 transitions. [2024-11-27 20:19:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-27 20:19:02,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:02,551 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:02,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-27 20:19:02,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:02,752 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-27 20:19:02,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash 470520220, now seen corresponding path program 3 times [2024-11-27 20:19:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:19:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638937470] [2024-11-27 20:19:02,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:19:02,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:19:02,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:19:02,760 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:19:02,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caace78d-fa2d-4061-9492-4e1a0a0d5f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process