./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:29:20,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:29:20,750 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:29:20,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:29:20,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:29:20,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:29:20,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:29:20,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:29:20,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:29:20,792 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:29:20,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:29:20,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:29:20,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:29:20,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:29:20,793 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:29:20,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:29:20,793 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:29:20,794 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:29:20,795 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:29:20,795 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:29:20,795 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:29:20,795 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:29:20,796 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:29:20,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:20,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:20,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:20,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:20,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:29:20,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:20,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:20,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:20,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:20,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:29:20,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:29:20,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:29:20,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:29:20,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:29:20,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:29:20,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:29:20,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:29:20,799 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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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 -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2024-11-27 23:29:21,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:29:21,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:29:21,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:29:21,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:29:21,213 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:29:21,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2024-11-27 23:29:25,121 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/60d8855f5/092e551d5ae84908bddbe21df8845ade/FLAG488632b13 [2024-11-27 23:29:25,589 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:29:25,590 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2024-11-27 23:29:25,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/60d8855f5/092e551d5ae84908bddbe21df8845ade/FLAG488632b13 [2024-11-27 23:29:25,720 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/60d8855f5/092e551d5ae84908bddbe21df8845ade [2024-11-27 23:29:25,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:29:25,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:29:25,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:25,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:29:25,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:29:25,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:25" (1/1) ... [2024-11-27 23:29:25,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8fe593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:25, skipping insertion in model container [2024-11-27 23:29:25,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:25" (1/1) ... [2024-11-27 23:29:25,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:26,265 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 23:29:26,341 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 23:29:26,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:26,366 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 23:29:26,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4bfa7c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:26, skipping insertion in model container [2024-11-27 23:29:26,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:26,367 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-27 23:29:26,369 INFO L158 Benchmark]: Toolchain (without parser) took 643.70ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 85.0MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:29:26,370 INFO L158 Benchmark]: CDTParser took 0.88ms. Allocated memory is still 167.8MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:29:26,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.69ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 85.0MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:29:26,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88ms. Allocated memory is still 167.8MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.69ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 85.0MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:29:29,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:29:29,779 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-27 23:29:29,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:29:29,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:29:29,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:29:29,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:29:29,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:29:29,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:29:29,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:29:29,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:29:29,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:29:29,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:29:29,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:29:29,849 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:29:29,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:29:29,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:29:29,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:29:29,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:29:29,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:29:29,851 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:29:29,851 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:29:29,851 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:29:29,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:29:29,851 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:29:29,852 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:29:29,852 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:29:29,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:29:29,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:29:29,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:29:29,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:29:29,853 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:29:29,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:29,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:29,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:29,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:29,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:29:29,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:29,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:29,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:29,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:29,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:29:29,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:29:29,855 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:29:29,855 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:29:29,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:29:29,855 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:29:29,855 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:29:29,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:29:29,856 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_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/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 -> 428ed4ebbacd235ea719e6f888a7e28edd9cc4f57416ea2a11ce399dc2c47283 [2024-11-27 23:29:30,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:29:30,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:29:30,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:29:30,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:29:30,275 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:29:30,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2024-11-27 23:29:34,279 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/a9ed269d5/734f3207288744bbba6b81693459faed/FLAG1d955d8f7 [2024-11-27 23:29:34,682 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:29:34,687 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2024-11-27 23:29:34,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/a9ed269d5/734f3207288744bbba6b81693459faed/FLAG1d955d8f7 [2024-11-27 23:29:34,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/data/a9ed269d5/734f3207288744bbba6b81693459faed [2024-11-27 23:29:34,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:29:34,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:29:34,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:34,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:29:34,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:29:34,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:34" (1/1) ... [2024-11-27 23:29:34,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67695be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:34, skipping insertion in model container [2024-11-27 23:29:34,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:34" (1/1) ... [2024-11-27 23:29:34,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:35,185 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 23:29:35,288 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 23:29:35,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:35,317 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 23:29:35,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:35,374 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 23:29:35,407 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 23:29:35,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:35,427 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:29:35,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:35,619 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:29:35,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35 WrapperNode [2024-11-27 23:29:35,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:35,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:29:35,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:29:35,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:29:35,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,688 INFO L138 Inliner]: procedures = 167, calls = 72, calls flagged for inlining = 22, calls inlined = 4, statements flattened = 18 [2024-11-27 23:29:35,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:29:35,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:29:35,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:29:35,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:29:35,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,746 INFO L175 MemorySlicer]: Split 2 memory accesses to 2 slices as follows [2, 0]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 0 writes are split as follows [0, 0]. [2024-11-27 23:29:35,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,761 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:29:35,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:29:35,782 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:29:35,782 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:29:35,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (1/1) ... [2024-11-27 23:29:35,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:35,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:35,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:29:35,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:29:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-27 23:29:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure free_8 [2024-11-27 23:29:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure free_8 [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 23:29:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:29:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:29:36,078 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:29:36,081 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:29:36,301 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-27 23:29:36,301 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:29:36,318 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:29:36,320 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:29:36,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:29:36 BoogieIcfgContainer [2024-11-27 23:29:36,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:29:36,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:29:36,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:29:36,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:29:36,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:29:34" (1/3) ... [2024-11-27 23:29:36,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19437ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:29:36, skipping insertion in model container [2024-11-27 23:29:36,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:35" (2/3) ... [2024-11-27 23:29:36,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19437ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:29:36, skipping insertion in model container [2024-11-27 23:29:36,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:29:36" (3/3) ... [2024-11-27 23:29:36,335 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2024-11-27 23:29:36,359 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:29:36,361 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test8_2.i that has 3 procedures, 26 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-11-27 23:29:36,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:29:36,448 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;@337d3279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:29:36,449 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 23:29:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:29:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:29:36,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:36,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:36,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting free_8Err0ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:36,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash 435848335, now seen corresponding path program 1 times [2024-11-27 23:29:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:36,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435530375] [2024-11-27 23:29:36,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:36,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:36,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:36,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:36,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:29:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:36,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:36,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:36,845 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 23:29:36,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:36,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:36,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435530375] [2024-11-27 23:29:36,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435530375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:36,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:36,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:36,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321869735] [2024-11-27 23:29:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:36,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:36,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:36,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:36,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:36,895 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:37,025 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-11-27 23:29:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-27 23:29:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:37,037 INFO L225 Difference]: With dead ends: 25 [2024-11-27 23:29:37,037 INFO L226 Difference]: Without dead ends: 23 [2024-11-27 23:29:37,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 23:29:37,046 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:37,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 63 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:29:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-27 23:29:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-27 23:29:37,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:29:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-27 23:29:37,100 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2024-11-27 23:29:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:37,100 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-27 23:29:37,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-27 23:29:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:29:37,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:37,104 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:37,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:29:37,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:37,309 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting free_8Err1ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:37,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash 626396533, now seen corresponding path program 1 times [2024-11-27 23:29:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378725249] [2024-11-27 23:29:37,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:37,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:37,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:37,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:37,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:29:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:37,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:37,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:37,575 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 23:29:37,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:37,575 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378725249] [2024-11-27 23:29:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378725249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640379993] [2024-11-27 23:29:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:37,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:37,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:37,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:37,580 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:37,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:37,760 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-27 23:29:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:37,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-27 23:29:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:37,762 INFO L225 Difference]: With dead ends: 22 [2024-11-27 23:29:37,762 INFO L226 Difference]: Without dead ends: 22 [2024-11-27 23:29:37,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 23:29:37,763 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:37,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:29:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-27 23:29:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-27 23:29:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:29:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-27 23:29:37,768 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-11-27 23:29:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:37,769 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-27 23:29:37,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-27 23:29:37,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:29:37,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:37,770 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:37,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:37,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:37,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:37,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2056543919, now seen corresponding path program 1 times [2024-11-27 23:29:37,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:37,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580365008] [2024-11-27 23:29:37,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:37,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:37,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:29:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:38,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:29:38,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:38,134 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 23:29:38,262 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 23:29:38,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:38,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580365008] [2024-11-27 23:29:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580365008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:38,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320383553] [2024-11-27 23:29:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:38,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:38,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:38,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:38,266 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:38,379 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-11-27 23:29:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-27 23:29:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:38,385 INFO L225 Difference]: With dead ends: 35 [2024-11-27 23:29:38,385 INFO L226 Difference]: Without dead ends: 35 [2024-11-27 23:29:38,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:38,387 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:38,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 48 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:29:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-27 23:29:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-27 23:29:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-27 23:29:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2024-11-27 23:29:38,401 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 14 [2024-11-27 23:29:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:38,402 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2024-11-27 23:29:38,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2024-11-27 23:29:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:29:38,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:38,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:38,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:29:38,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:38,612 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:38,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:38,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2041909872, now seen corresponding path program 1 times [2024-11-27 23:29:38,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:38,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10186316] [2024-11-27 23:29:38,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:38,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:38,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:38,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:38,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:29:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:38,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:38,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:38,772 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 23:29:38,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:38,772 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:38,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10186316] [2024-11-27 23:29:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10186316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409813942] [2024-11-27 23:29:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:38,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:38,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:38,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:38,775 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:38,878 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-11-27 23:29:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:38,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-27 23:29:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:38,881 INFO L225 Difference]: With dead ends: 46 [2024-11-27 23:29:38,881 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 23:29:38,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 23:29:38,883 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:38,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 89 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:29:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 23:29:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-11-27 23:29:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-27 23:29:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-11-27 23:29:38,893 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 14 [2024-11-27 23:29:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:38,893 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-11-27 23:29:38,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:29:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-11-27 23:29:38,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:29:38,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:38,895 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:38,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:29:39,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,100 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:39,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 7328137, now seen corresponding path program 1 times [2024-11-27 23:29:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:39,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79340232] [2024-11-27 23:29:39,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:39,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:39,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:39,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:29:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:39,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:39,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:29:39,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:39,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79340232] [2024-11-27 23:29:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79340232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:39,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:29:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175469964] [2024-11-27 23:29:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:39,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:39,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:39,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:39,244 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:29:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:39,291 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2024-11-27 23:29:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:39,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2024-11-27 23:29:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:39,293 INFO L225 Difference]: With dead ends: 39 [2024-11-27 23:29:39,293 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 23:29:39,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:39,294 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:39,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:29:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 23:29:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-11-27 23:29:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 23:29:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-27 23:29:39,301 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2024-11-27 23:29:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:39,301 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-27 23:29:39,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:29:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-27 23:29:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:29:39,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:39,303 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:39,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:39,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,504 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:39,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash -503206040, now seen corresponding path program 1 times [2024-11-27 23:29:39,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142018755] [2024-11-27 23:29:39,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:39,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:29:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:39,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:29:39,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:29:39,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:39,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:39,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142018755] [2024-11-27 23:29:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142018755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:39,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:29:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033557944] [2024-11-27 23:29:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:39,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:29:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:39,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:29:39,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:29:39,677 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:29:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:39,756 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2024-11-27 23:29:39,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:29:39,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2024-11-27 23:29:39,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:39,758 INFO L225 Difference]: With dead ends: 44 [2024-11-27 23:29:39,759 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 23:29:39,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 23:29:39,761 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:39,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:29:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 23:29:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-27 23:29:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-27 23:29:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2024-11-27 23:29:39,779 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 20 [2024-11-27 23:29:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:39,779 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2024-11-27 23:29:39,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:29:39,779 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2024-11-27 23:29:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-27 23:29:39,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:39,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:39,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:29:39,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,981 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting free_8Err2ASSERT_VIOLATIONMEMORY_FREE === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, free_8Err2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-27 23:29:39,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:39,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1029118526, now seen corresponding path program 1 times [2024-11-27 23:29:39,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:39,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056156986] [2024-11-27 23:29:39,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:39,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:39,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:39,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:29:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:29:40,067 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:29:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:29:40,152 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-27 23:29:40,152 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:29:40,154 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location free_8Err2ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2024-11-27 23:29:40,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_8Err0ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2024-11-27 23:29:40,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_8Err1ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2024-11-27 23:29:40,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-27 23:29:40,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:40,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:40,362 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:40,386 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:29:40,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:29:40 BoogieIcfgContainer [2024-11-27 23:29:40,391 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:29:40,392 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:29:40,392 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:29:40,392 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:29:40,393 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:29:36" (3/4) ... [2024-11-27 23:29:40,394 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 23:29:40,450 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 12. [2024-11-27 23:29:40,511 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:29:40,512 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:29:40,512 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:29:40,513 INFO L158 Benchmark]: Toolchain (without parser) took 5774.93ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 82.4MB in the end (delta: 9.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2024-11-27 23:29:40,513 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:29:40,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 883.84ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 64.2MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 23:29:40,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.54ms. Allocated memory is still 117.4MB. Free memory was 64.2MB in the beginning and 62.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:29:40,515 INFO L158 Benchmark]: Boogie Preprocessor took 88.29ms. Allocated memory is still 117.4MB. Free memory was 62.4MB in the beginning and 60.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:29:40,515 INFO L158 Benchmark]: RCFGBuilder took 539.25ms. Allocated memory is still 117.4MB. Free memory was 60.8MB in the beginning and 49.5MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:29:40,515 INFO L158 Benchmark]: TraceAbstraction took 4067.11ms. Allocated memory is still 117.4MB. Free memory was 48.9MB in the beginning and 87.6MB in the end (delta: -38.8MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2024-11-27 23:29:40,516 INFO L158 Benchmark]: Witness Printer took 120.35ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 82.4MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:29:40,518 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 883.84ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 64.2MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.54ms. Allocated memory is still 117.4MB. Free memory was 64.2MB in the beginning and 62.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.29ms. Allocated memory is still 117.4MB. Free memory was 62.4MB in the beginning and 60.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 539.25ms. Allocated memory is still 117.4MB. Free memory was 60.8MB in the beginning and 49.5MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4067.11ms. Allocated memory is still 117.4MB. Free memory was 48.9MB in the beginning and 87.6MB in the end (delta: -38.8MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 120.35ms. Allocated memory is still 117.4MB. Free memory was 86.8MB in the beginning and 82.4MB in the end (delta: 4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={1:0}] [L771] CALL entry_point() [L765] CALL alloc_8() [L759] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a8={0:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L759] RET, EXPR ldv_malloc(sizeof(int)) VAL [a8={0:0}, ldv_global_msg_list={1:0}] [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L765] RET alloc_8() [L766] CALL free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) [L766] RET free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L767] CALL free_8() VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] COND TRUE \read(*a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] [L762] free(a8) VAL [a8={2:0}, ldv_global_msg_list={1:0}] - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 228 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 175 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 138 mSDtfsCounter, 175 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 243 SizeOfPredicates, 1 NumberOfNonLiveVariables, 273 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-27 23:29:40,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_468fdca6-f217-41b0-b1a4-d8e68e76f5c6/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)