./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/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_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/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 64bit --witnessprinter.graph.data.programhash 225e0f8ec8427769f807cb9abdb48fc1d5aa020788f9d77d633e751d0afad499 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:27:59,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:27:59,139 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 03:27:59,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:27:59,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:27:59,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:27:59,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:27:59,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:27:59,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:27:59,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:27:59,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:27:59,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:27:59,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:27:59,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:27:59,186 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:27:59,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:27:59,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:27:59,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:27:59,188 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:27:59,188 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:27:59,188 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:27:59,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:27:59,189 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:27:59,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:27:59,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:27:59,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:27:59,190 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:27:59,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:27:59,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:27:59,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:27:59,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:27:59,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:27:59,191 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_dfa00254-8910-4f92-a86c-595ea6f9d85a/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 225e0f8ec8427769f807cb9abdb48fc1d5aa020788f9d77d633e751d0afad499 [2024-11-28 03:27:59,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:27:59,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:27:59,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:27:59,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:27:59,508 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:27:59,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i [2024-11-28 03:28:02,421 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/4eabaf736/7595dc224f614a8cab74d0e3d4fcd4d2/FLAG7307905c9 [2024-11-28 03:28:02,849 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:28:02,850 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i [2024-11-28 03:28:02,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/4eabaf736/7595dc224f614a8cab74d0e3d4fcd4d2/FLAG7307905c9 [2024-11-28 03:28:02,883 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/4eabaf736/7595dc224f614a8cab74d0e3d4fcd4d2 [2024-11-28 03:28:02,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:28:02,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:28:02,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:28:02,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:28:02,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:28:02,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:28:02" (1/1) ... [2024-11-28 03:28:02,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547e6a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:02, skipping insertion in model container [2024-11-28 03:28:02,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:28:02" (1/1) ... [2024-11-28 03:28:02,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:28:03,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:28:03,250 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) [2024-11-28 03:28:03,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d73d95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:03, skipping insertion in model container [2024-11-28 03:28:03,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:28:03,251 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 03:28:03,253 INFO L158 Benchmark]: Toolchain (without parser) took 365.70ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 88.0MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:28:03,253 INFO L158 Benchmark]: CDTParser took 1.14ms. Allocated memory is still 167.8MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:28:03,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.94ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 88.0MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:28:03,255 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14ms. Allocated memory is still 167.8MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.94ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 88.0MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2493]: 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_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/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_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/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 64bit --witnessprinter.graph.data.programhash 225e0f8ec8427769f807cb9abdb48fc1d5aa020788f9d77d633e751d0afad499 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:28:05,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:28:05,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-28 03:28:05,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:28:05,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:28:06,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:28:06,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:28:06,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:28:06,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:28:06,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:28:06,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:28:06,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:28:06,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:28:06,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:28:06,026 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:28:06,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:28:06,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:28:06,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:28:06,027 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:28:06,027 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:28:06,027 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:28:06,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:28:06,027 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:28:06,028 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:28:06,028 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:28:06,028 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:28:06,028 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:28:06,028 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:28:06,028 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:28:06,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:28:06,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:28:06,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:28:06,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:28:06,030 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:28:06,030 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:28:06,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:28:06,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:28:06,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:28:06,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:28:06,030 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_dfa00254-8910-4f92-a86c-595ea6f9d85a/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 225e0f8ec8427769f807cb9abdb48fc1d5aa020788f9d77d633e751d0afad499 [2024-11-28 03:28:06,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:28:06,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:28:06,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:28:06,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:28:06,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:28:06,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i [2024-11-28 03:28:09,375 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/a05993ef2/3ba6e2c9583143af96a7844b005283c5/FLAG48dc04c8c [2024-11-28 03:28:09,761 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:28:09,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/sv-benchmarks/c/memsafety-broom/linux-list-middle-data.i [2024-11-28 03:28:09,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/a05993ef2/3ba6e2c9583143af96a7844b005283c5/FLAG48dc04c8c [2024-11-28 03:28:09,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/data/a05993ef2/3ba6e2c9583143af96a7844b005283c5 [2024-11-28 03:28:09,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:28:09,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:28:09,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:28:09,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:28:09,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:28:09,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:28:09" (1/1) ... [2024-11-28 03:28:09,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d26fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:09, skipping insertion in model container [2024-11-28 03:28:09,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:28:09" (1/1) ... [2024-11-28 03:28:09,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:28:10,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:28:10,315 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 03:28:10,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:28:10,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:28:10,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:28:10,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:28:10,508 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:28:10,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10 WrapperNode [2024-11-28 03:28:10,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:28:10,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:28:10,510 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:28:10,510 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:28:10,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,578 INFO L138 Inliner]: procedures = 125, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 102 [2024-11-28 03:28:10,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:28:10,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:28:10,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:28:10,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:28:10,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,640 INFO L175 MemorySlicer]: Split 20 memory accesses to 1 slices as follows [20]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 12 writes are split as follows [12]. [2024-11-28 03:28:10,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,656 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,677 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:28:10,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:28:10,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:28:10,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:28:10,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (1/1) ... [2024-11-28 03:28:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:28:10,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:10,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:28:10,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:28:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:28:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:28:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:28:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:28:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 03:28:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:28:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:28:10,868 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:28:10,870 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:28:11,587 INFO L? ?]: Removed 145 outVars from TransFormulas that were not future-live. [2024-11-28 03:28:11,588 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:28:11,602 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:28:11,603 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:28:11,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:28:11 BoogieIcfgContainer [2024-11-28 03:28:11,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:28:11,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:28:11,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:28:11,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:28:11,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:28:09" (1/3) ... [2024-11-28 03:28:11,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb441aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:28:11, skipping insertion in model container [2024-11-28 03:28:11,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:10" (2/3) ... [2024-11-28 03:28:11,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb441aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:28:11, skipping insertion in model container [2024-11-28 03:28:11,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:28:11" (3/3) ... [2024-11-28 03:28:11,623 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-list-middle-data.i [2024-11-28 03:28:11,635 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:28:11,636 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-list-middle-data.i that has 1 procedures, 104 locations, 1 initial locations, 4 loop locations, and 47 error locations. [2024-11-28 03:28:11,684 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:28:11,695 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;@91c8613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:28:11,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-28 03:28:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:28:11,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:11,704 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:28:11,705 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:11,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:11,710 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2024-11-28 03:28:11,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660578405] [2024-11-28 03:28:11,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:11,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:11,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:11,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:28:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:11,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:28:11,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:11,873 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 [2024-11-28 03:28:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:11,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:11,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:11,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660578405] [2024-11-28 03:28:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660578405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:11,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:11,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:28:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519241710] [2024-11-28 03:28:11,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:11,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:28:11,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:11,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:28:11,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:11,926 INFO L87 Difference]: Start difference. First operand has 104 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 103 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:12,237 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2024-11-28 03:28:12,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:28:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 03:28:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:12,246 INFO L225 Difference]: With dead ends: 102 [2024-11-28 03:28:12,246 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 03:28:12,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:12,251 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:12,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 120 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:28:12,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 03:28:12,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-28 03:28:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 55 states have (on average 1.8545454545454545) internal successors, (102), 99 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2024-11-28 03:28:12,296 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 3 [2024-11-28 03:28:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:12,297 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2024-11-28 03:28:12,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2024-11-28 03:28:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:28:12,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:12,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:28:12,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:12,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:12,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:12,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:12,500 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2024-11-28 03:28:12,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:12,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161855315] [2024-11-28 03:28:12,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:12,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:12,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:12,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:12,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:28:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:12,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:28:12,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:12,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:12,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:12,608 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:12,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161855315] [2024-11-28 03:28:12,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161855315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:12,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:12,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:28:12,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956510767] [2024-11-28 03:28:12,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:12,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:28:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:12,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:28:12,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:12,611 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:13,022 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2024-11-28 03:28:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:28:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 03:28:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:13,024 INFO L225 Difference]: With dead ends: 102 [2024-11-28 03:28:13,024 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 03:28:13,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:13,025 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:13,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:28:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 03:28:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-28 03:28:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.8181818181818181) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2024-11-28 03:28:13,031 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 3 [2024-11-28 03:28:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:13,031 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2024-11-28 03:28:13,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2024-11-28 03:28:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:28:13,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:13,032 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:13,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:28:13,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:13,233 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:13,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash 297344495, now seen corresponding path program 1 times [2024-11-28 03:28:13,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832435086] [2024-11-28 03:28:13,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:13,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:13,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:13,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:13,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:28:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:13,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:28:13,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:13,331 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 [2024-11-28 03:28:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:13,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:13,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832435086] [2024-11-28 03:28:13,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832435086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:13,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:13,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:28:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344155039] [2024-11-28 03:28:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:13,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:28:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:13,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:28:13,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:13,341 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:13,625 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2024-11-28 03:28:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:28:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 03:28:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:13,627 INFO L225 Difference]: With dead ends: 96 [2024-11-28 03:28:13,628 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:28:13,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:13,629 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:13,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:28:13,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:28:13,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 03:28:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.7818181818181817) internal successors, (98), 95 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-11-28 03:28:13,639 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 9 [2024-11-28 03:28:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:13,639 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-11-28 03:28:13,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-11-28 03:28:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:28:13,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:13,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:13,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:13,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:13,845 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:13,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash 297344496, now seen corresponding path program 1 times [2024-11-28 03:28:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294087876] [2024-11-28 03:28:13,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:13,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:13,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:13,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:13,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:28:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:13,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:28:13,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:13,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:13,957 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:13,957 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:13,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294087876] [2024-11-28 03:28:13,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294087876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:13,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:13,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:28:13,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341546227] [2024-11-28 03:28:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:13,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:28:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:13,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:28:13,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:13,959 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:14,330 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2024-11-28 03:28:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:28:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 03:28:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:14,331 INFO L225 Difference]: With dead ends: 94 [2024-11-28 03:28:14,331 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 03:28:14,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:28:14,332 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:14,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:28:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 03:28:14,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 03:28:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2024-11-28 03:28:14,337 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 9 [2024-11-28 03:28:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:14,338 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2024-11-28 03:28:14,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2024-11-28 03:28:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:28:14,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:14,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:14,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:28:14,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:14,539 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:14,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash 627836145, now seen corresponding path program 1 times [2024-11-28 03:28:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616989314] [2024-11-28 03:28:14,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:14,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:14,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:14,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:14,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:28:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:14,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:28:14,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:14,681 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:14,681 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:14,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616989314] [2024-11-28 03:28:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616989314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:14,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:14,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:28:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446157261] [2024-11-28 03:28:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:14,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:28:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:14,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:28:14,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:14,685 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:15,135 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-28 03:28:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:28:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 03:28:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:15,136 INFO L225 Difference]: With dead ends: 93 [2024-11-28 03:28:15,136 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:28:15,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:15,137 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:15,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 190 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:28:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:28:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 03:28:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-11-28 03:28:15,145 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 10 [2024-11-28 03:28:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:15,145 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-11-28 03:28:15,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-11-28 03:28:15,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:28:15,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:15,145 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:15,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:15,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:15,346 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:15,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash 627836146, now seen corresponding path program 1 times [2024-11-28 03:28:15,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:15,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041026778] [2024-11-28 03:28:15,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:15,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:15,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:15,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:15,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:28:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:15,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:28:15,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:15,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:15,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:15,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:15,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041026778] [2024-11-28 03:28:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041026778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:15,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:15,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:28:15,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898338515] [2024-11-28 03:28:15,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:15,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:28:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:15,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:28:15,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:15,556 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:16,183 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2024-11-28 03:28:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:28:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 03:28:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:16,185 INFO L225 Difference]: With dead ends: 107 [2024-11-28 03:28:16,185 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 03:28:16,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:16,185 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 10 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:16,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 241 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:28:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 03:28:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2024-11-28 03:28:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 97 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2024-11-28 03:28:16,192 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 10 [2024-11-28 03:28:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:16,192 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2024-11-28 03:28:16,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2024-11-28 03:28:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:28:16,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:16,193 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:16,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:16,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:16,394 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:16,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash 856454065, now seen corresponding path program 1 times [2024-11-28 03:28:16,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:16,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707399109] [2024-11-28 03:28:16,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:16,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:16,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:16,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:16,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:28:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:16,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:28:16,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:16,592 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:28:16,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:28:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:16,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:16,630 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707399109] [2024-11-28 03:28:16,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707399109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:16,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:16,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:28:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126141942] [2024-11-28 03:28:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:16,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:28:16,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:16,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:28:16,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:28:16,632 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:16,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:16,971 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2024-11-28 03:28:16,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:28:16,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:28:16,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:16,974 INFO L225 Difference]: With dead ends: 97 [2024-11-28 03:28:16,975 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:28:16,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:16,975 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 20 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:16,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 159 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:28:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:28:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-28 03:28:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.6666666666666667) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2024-11-28 03:28:16,981 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 13 [2024-11-28 03:28:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:16,981 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2024-11-28 03:28:16,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2024-11-28 03:28:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:28:16,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:16,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:16,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:28:17,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:17,186 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:17,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash 856454066, now seen corresponding path program 1 times [2024-11-28 03:28:17,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:17,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507075974] [2024-11-28 03:28:17,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:17,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:17,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:17,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:28:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:17,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:28:17,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:17,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:17,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:28:17,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:28:17,484 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:28:17,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:28:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:17,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:17,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507075974] [2024-11-28 03:28:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507075974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:17,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:17,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:28:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425863444] [2024-11-28 03:28:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:17,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:28:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:17,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:28:17,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:17,550 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:18,078 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2024-11-28 03:28:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:28:18,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:28:18,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:18,079 INFO L225 Difference]: With dead ends: 96 [2024-11-28 03:28:18,079 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 03:28:18,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:18,080 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 40 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:18,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 161 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:28:18,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 03:28:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-28 03:28:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.65) internal successors, (99), 95 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2024-11-28 03:28:18,089 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 13 [2024-11-28 03:28:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:18,091 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2024-11-28 03:28:18,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2024-11-28 03:28:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:28:18,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:18,092 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:18,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:28:18,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:18,296 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:18,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash -719315334, now seen corresponding path program 1 times [2024-11-28 03:28:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:18,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616972731] [2024-11-28 03:28:18,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:18,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:18,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:18,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:18,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:28:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:18,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:28:18,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:18,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:18,473 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616972731] [2024-11-28 03:28:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616972731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:18,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:28:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045725764] [2024-11-28 03:28:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:18,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:28:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:18,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:28:18,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:18,475 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:19,099 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2024-11-28 03:28:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:28:19,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 03:28:19,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:19,100 INFO L225 Difference]: With dead ends: 128 [2024-11-28 03:28:19,100 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 03:28:19,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:19,101 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 67 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:19,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 192 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:28:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 03:28:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2024-11-28 03:28:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.640625) internal successors, (105), 98 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2024-11-28 03:28:19,106 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 14 [2024-11-28 03:28:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:19,106 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2024-11-28 03:28:19,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2024-11-28 03:28:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:28:19,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:19,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:19,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:19,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:19,308 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:19,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash -719315333, now seen corresponding path program 1 times [2024-11-28 03:28:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:19,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922284561] [2024-11-28 03:28:19,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:19,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:19,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:19,310 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:19,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:28:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:19,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:28:19,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:19,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:19,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:19,569 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922284561] [2024-11-28 03:28:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922284561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:19,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:19,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:28:19,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222037659] [2024-11-28 03:28:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:19,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:28:19,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:19,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:28:19,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:19,571 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:20,449 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2024-11-28 03:28:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:28:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 03:28:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:20,451 INFO L225 Difference]: With dead ends: 151 [2024-11-28 03:28:20,452 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 03:28:20,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:20,452 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 48 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:20,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 251 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:28:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 03:28:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 129. [2024-11-28 03:28:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 128 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 159 transitions. [2024-11-28 03:28:20,458 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 159 transitions. Word has length 14 [2024-11-28 03:28:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:20,458 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 159 transitions. [2024-11-28 03:28:20,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 159 transitions. [2024-11-28 03:28:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:28:20,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:20,459 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:20,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:28:20,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:20,660 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:20,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1581363982, now seen corresponding path program 1 times [2024-11-28 03:28:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64951395] [2024-11-28 03:28:20,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:20,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:20,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:20,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:28:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:20,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:28:20,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:20,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:20,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64951395] [2024-11-28 03:28:20,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64951395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:20,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:20,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:28:20,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436645555] [2024-11-28 03:28:20,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:20,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:28:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:20,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:28:20,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:28:20,787 INFO L87 Difference]: Start difference. First operand 129 states and 159 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:21,133 INFO L93 Difference]: Finished difference Result 128 states and 158 transitions. [2024-11-28 03:28:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:28:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:28:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:21,134 INFO L225 Difference]: With dead ends: 128 [2024-11-28 03:28:21,134 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 03:28:21,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:28:21,135 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:21,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 180 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:28:21,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 03:28:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-28 03:28:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 127 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2024-11-28 03:28:21,142 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 158 transitions. Word has length 15 [2024-11-28 03:28:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:21,142 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 158 transitions. [2024-11-28 03:28:21,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 158 transitions. [2024-11-28 03:28:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:28:21,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:21,143 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:21,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:28:21,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:21,344 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:21,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1581363981, now seen corresponding path program 1 times [2024-11-28 03:28:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049819042] [2024-11-28 03:28:21,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:21,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:21,348 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:21,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:28:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:21,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:28:21,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:21,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:21,566 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:21,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049819042] [2024-11-28 03:28:21,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049819042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:21,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:21,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:28:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080106736] [2024-11-28 03:28:21,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:21,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:28:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:21,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:28:21,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:21,567 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:21,993 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2024-11-28 03:28:21,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:28:21,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:28:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:21,995 INFO L225 Difference]: With dead ends: 127 [2024-11-28 03:28:21,995 INFO L226 Difference]: Without dead ends: 127 [2024-11-28 03:28:21,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:28:21,996 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 19 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:21,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 272 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:28:21,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-28 03:28:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-28 03:28:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 126 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 157 transitions. [2024-11-28 03:28:22,000 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 157 transitions. Word has length 15 [2024-11-28 03:28:22,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:22,003 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 157 transitions. [2024-11-28 03:28:22,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 157 transitions. [2024-11-28 03:28:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:28:22,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:22,004 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:22,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:22,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:22,205 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:22,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:22,205 INFO L85 PathProgramCache]: Analyzing trace with hash -824008294, now seen corresponding path program 1 times [2024-11-28 03:28:22,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:22,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723588265] [2024-11-28 03:28:22,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:22,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:22,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:22,208 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:22,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:28:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:22,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:28:22,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:22,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:22,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 03:28:22,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:22,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:22,501 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723588265] [2024-11-28 03:28:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723588265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:22,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:22,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:28:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947029589] [2024-11-28 03:28:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:22,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:28:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:22,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:28:22,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:28:22,503 INFO L87 Difference]: Start difference. First operand 127 states and 157 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:23,262 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2024-11-28 03:28:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:28:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:28:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:23,264 INFO L225 Difference]: With dead ends: 135 [2024-11-28 03:28:23,264 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 03:28:23,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:28:23,264 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 15 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:23,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 288 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:28:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 03:28:23,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2024-11-28 03:28:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 98 states have (on average 1.663265306122449) internal successors, (163), 130 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2024-11-28 03:28:23,269 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 15 [2024-11-28 03:28:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:23,269 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2024-11-28 03:28:23,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2024-11-28 03:28:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:28:23,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:23,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:23,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:28:23,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:23,471 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:23,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -824008293, now seen corresponding path program 1 times [2024-11-28 03:28:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271547499] [2024-11-28 03:28:23,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:23,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:23,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:23,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:28:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:23,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:28:23,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:23,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:23,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:23,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:28:23,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:28:23,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:23,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:23,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:23,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:23,997 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:23,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271547499] [2024-11-28 03:28:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271547499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:23,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:23,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:28:23,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485108458] [2024-11-28 03:28:23,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:23,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:28:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:23,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:28:23,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:28:23,999 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:24,807 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2024-11-28 03:28:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:28:24,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:28:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:24,809 INFO L225 Difference]: With dead ends: 125 [2024-11-28 03:28:24,809 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 03:28:24,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:28:24,810 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 29 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:24,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 446 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:28:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 03:28:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-11-28 03:28:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.6666666666666667) internal successors, (150), 122 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2024-11-28 03:28:24,814 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 15 [2024-11-28 03:28:24,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:24,814 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2024-11-28 03:28:24,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2024-11-28 03:28:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:28:24,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:24,815 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:24,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:28:25,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:25,016 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:25,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1777643169, now seen corresponding path program 1 times [2024-11-28 03:28:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527162777] [2024-11-28 03:28:25,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:25,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:25,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:25,019 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:25,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:28:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:25,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:28:25,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:25,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:25,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:25,275 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527162777] [2024-11-28 03:28:25,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527162777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:25,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:25,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:28:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115180924] [2024-11-28 03:28:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:25,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:28:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:25,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:28:25,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:25,277 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:25,764 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2024-11-28 03:28:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:28:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:28:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:25,765 INFO L225 Difference]: With dead ends: 121 [2024-11-28 03:28:25,765 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 03:28:25,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:25,766 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:25,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 220 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:28:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 03:28:25,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-28 03:28:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 90 states have (on average 1.6444444444444444) internal successors, (148), 120 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2024-11-28 03:28:25,770 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 16 [2024-11-28 03:28:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:25,770 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2024-11-28 03:28:25,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:25,770 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2024-11-28 03:28:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:28:25,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:25,771 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:25,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:28:25,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:25,972 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:25,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1777643170, now seen corresponding path program 1 times [2024-11-28 03:28:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691066034] [2024-11-28 03:28:25,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:25,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:25,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:25,974 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:25,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:28:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:26,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:28:26,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:26,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:26,143 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:26,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691066034] [2024-11-28 03:28:26,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691066034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:26,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:26,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:28:26,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015446415] [2024-11-28 03:28:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:26,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:28:26,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:26,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:28:26,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:26,144 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:26,552 INFO L93 Difference]: Finished difference Result 119 states and 146 transitions. [2024-11-28 03:28:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:28:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:28:26,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:26,554 INFO L225 Difference]: With dead ends: 119 [2024-11-28 03:28:26,554 INFO L226 Difference]: Without dead ends: 119 [2024-11-28 03:28:26,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:26,555 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:26,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 208 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:28:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-28 03:28:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-28 03:28:26,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 90 states have (on average 1.6222222222222222) internal successors, (146), 118 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2024-11-28 03:28:26,560 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 16 [2024-11-28 03:28:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:26,561 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2024-11-28 03:28:26,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2024-11-28 03:28:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:28:26,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:26,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:26,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:28:26,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:26,762 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:26,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash 227700667, now seen corresponding path program 1 times [2024-11-28 03:28:26,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:26,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524910235] [2024-11-28 03:28:26,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:26,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:26,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:26,767 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:26,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:28:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:26,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:28:26,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:26,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 03:28:27,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:27,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:27,198 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:27,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524910235] [2024-11-28 03:28:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524910235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:27,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:28:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783394427] [2024-11-28 03:28:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:27,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:28:27,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:27,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:28:27,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:28:27,200 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:28,879 INFO L93 Difference]: Finished difference Result 181 states and 228 transitions. [2024-11-28 03:28:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:28:28,879 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:28:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:28,882 INFO L225 Difference]: With dead ends: 181 [2024-11-28 03:28:28,882 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 03:28:28,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:28:28,883 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 91 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:28,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 277 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:28:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 03:28:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2024-11-28 03:28:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 121 states have (on average 1.7107438016528926) internal successors, (207), 149 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 207 transitions. [2024-11-28 03:28:28,888 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 207 transitions. Word has length 16 [2024-11-28 03:28:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:28,889 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 207 transitions. [2024-11-28 03:28:28,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 207 transitions. [2024-11-28 03:28:28,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:28:28,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:28,889 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:28,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:29,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:29,090 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:29,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash 227700668, now seen corresponding path program 1 times [2024-11-28 03:28:29,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:29,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782120600] [2024-11-28 03:28:29,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:29,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:29,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:29,092 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:29,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:28:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:29,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:28:29,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:29,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:29,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 03:28:29,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 03:28:29,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:29,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:28:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:29,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:29,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782120600] [2024-11-28 03:28:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782120600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:29,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:29,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:28:29,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175305859] [2024-11-28 03:28:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:29,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:28:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:29,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:28:29,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:28:29,721 INFO L87 Difference]: Start difference. First operand 150 states and 207 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:30,998 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2024-11-28 03:28:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:28:30,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:28:30,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:30,999 INFO L225 Difference]: With dead ends: 144 [2024-11-28 03:28:30,999 INFO L226 Difference]: Without dead ends: 144 [2024-11-28 03:28:30,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:28:31,000 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 42 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:31,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 330 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:28:31,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-28 03:28:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2024-11-28 03:28:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 102 states have (on average 1.6372549019607843) internal successors, (167), 130 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 167 transitions. [2024-11-28 03:28:31,004 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 167 transitions. Word has length 16 [2024-11-28 03:28:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:31,005 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 167 transitions. [2024-11-28 03:28:31,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 167 transitions. [2024-11-28 03:28:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:28:31,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:31,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:31,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:28:31,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:31,206 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:31,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1081898049, now seen corresponding path program 1 times [2024-11-28 03:28:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:31,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521252495] [2024-11-28 03:28:31,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:31,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:31,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:31,209 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:31,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:28:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:31,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 03:28:31,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:31,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:31,449 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:28:31,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:28:31,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:31,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:31,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:31,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:31,621 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521252495] [2024-11-28 03:28:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521252495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:31,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:31,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:28:31,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684432867] [2024-11-28 03:28:31,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:31,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:28:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:31,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:28:31,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:28:31,623 INFO L87 Difference]: Start difference. First operand 131 states and 167 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:32,418 INFO L93 Difference]: Finished difference Result 142 states and 179 transitions. [2024-11-28 03:28:32,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:28:32,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 03:28:32,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:32,420 INFO L225 Difference]: With dead ends: 142 [2024-11-28 03:28:32,420 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 03:28:32,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:28:32,421 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 55 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:32,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 339 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:28:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 03:28:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-28 03:28:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.584070796460177) internal successors, (179), 141 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 179 transitions. [2024-11-28 03:28:32,425 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 179 transitions. Word has length 18 [2024-11-28 03:28:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:32,425 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 179 transitions. [2024-11-28 03:28:32,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 179 transitions. [2024-11-28 03:28:32,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:28:32,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:32,426 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:32,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:28:32,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:32,627 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:32,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1081898050, now seen corresponding path program 1 times [2024-11-28 03:28:32,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:32,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919665168] [2024-11-28 03:28:32,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:32,631 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:32,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:28:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:32,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:28:32,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:32,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:32,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:32,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:32,997 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:28:32,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-28 03:28:33,023 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:28:33,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:28:33,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:33,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:33,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:33,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:33,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:33,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:28:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:33,324 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:33,325 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919665168] [2024-11-28 03:28:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919665168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:28:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737638509] [2024-11-28 03:28:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:33,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:28:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:33,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:28:33,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:28:33,326 INFO L87 Difference]: Start difference. First operand 142 states and 179 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:34,447 INFO L93 Difference]: Finished difference Result 142 states and 178 transitions. [2024-11-28 03:28:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:28:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 03:28:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:34,448 INFO L225 Difference]: With dead ends: 142 [2024-11-28 03:28:34,448 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 03:28:34,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:28:34,449 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 48 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:34,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 296 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:28:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 03:28:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-28 03:28:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.575221238938053) internal successors, (178), 141 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 178 transitions. [2024-11-28 03:28:34,454 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 178 transitions. Word has length 18 [2024-11-28 03:28:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:34,454 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 178 transitions. [2024-11-28 03:28:34,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 178 transitions. [2024-11-28 03:28:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:28:34,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:34,455 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:34,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:34,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:34,655 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:34,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash 455946882, now seen corresponding path program 1 times [2024-11-28 03:28:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514976030] [2024-11-28 03:28:34,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:34,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:34,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:34,658 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:34,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:28:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:34,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:28:34,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:34,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:34,810 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514976030] [2024-11-28 03:28:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514976030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:28:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922878463] [2024-11-28 03:28:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:34,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:28:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:34,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:28:34,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:28:34,811 INFO L87 Difference]: Start difference. First operand 142 states and 178 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:35,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:35,188 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2024-11-28 03:28:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:28:35,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:28:35,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:35,189 INFO L225 Difference]: With dead ends: 148 [2024-11-28 03:28:35,189 INFO L226 Difference]: Without dead ends: 148 [2024-11-28 03:28:35,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:28:35,190 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 42 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:35,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 134 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:28:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-28 03:28:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 139. [2024-11-28 03:28:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 113 states have (on average 1.4778761061946903) internal successors, (167), 138 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 167 transitions. [2024-11-28 03:28:35,195 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 167 transitions. Word has length 20 [2024-11-28 03:28:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:35,195 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 167 transitions. [2024-11-28 03:28:35,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 167 transitions. [2024-11-28 03:28:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:28:35,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:35,196 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:35,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:28:35,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:35,401 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:35,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash 455946883, now seen corresponding path program 1 times [2024-11-28 03:28:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070866867] [2024-11-28 03:28:35,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:35,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:35,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:35,404 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:35,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:28:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:35,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:28:35,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:35,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:35,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 03:28:35,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 03:28:35,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:28:35,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:36,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:36,096 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:36,096 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:36,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070866867] [2024-11-28 03:28:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070866867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:36,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:36,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:28:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960117642] [2024-11-28 03:28:36,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:36,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:28:36,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:36,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:28:36,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:28:36,098 INFO L87 Difference]: Start difference. First operand 139 states and 167 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:37,139 INFO L93 Difference]: Finished difference Result 128 states and 147 transitions. [2024-11-28 03:28:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:28:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:28:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:37,141 INFO L225 Difference]: With dead ends: 128 [2024-11-28 03:28:37,141 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 03:28:37,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:28:37,145 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 8 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:37,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 352 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:28:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 03:28:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-28 03:28:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 127 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:37,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2024-11-28 03:28:37,150 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 20 [2024-11-28 03:28:37,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:37,150 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2024-11-28 03:28:37,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:37,150 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2024-11-28 03:28:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:28:37,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:37,151 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:37,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:37,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:37,355 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:37,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 455950019, now seen corresponding path program 1 times [2024-11-28 03:28:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849046526] [2024-11-28 03:28:37,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:37,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:37,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:37,357 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:37,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:28:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:37,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:28:37,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:37,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:37,604 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849046526] [2024-11-28 03:28:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849046526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:28:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414509219] [2024-11-28 03:28:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:37,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:28:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:37,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:28:37,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:37,605 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:37,797 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2024-11-28 03:28:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:28:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:28:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:37,798 INFO L225 Difference]: With dead ends: 127 [2024-11-28 03:28:37,798 INFO L226 Difference]: Without dead ends: 127 [2024-11-28 03:28:37,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:28:37,799 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 58 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:37,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 259 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:28:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-28 03:28:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-28 03:28:37,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.4215686274509804) internal successors, (145), 126 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2024-11-28 03:28:37,803 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 20 [2024-11-28 03:28:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:37,803 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2024-11-28 03:28:37,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2024-11-28 03:28:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:28:37,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:37,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:37,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:28:38,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:38,005 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:38,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1774364398, now seen corresponding path program 1 times [2024-11-28 03:28:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392863403] [2024-11-28 03:28:38,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:38,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:38,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:38,007 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:38,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:28:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:38,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:28:38,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:38,308 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~head#1.base_13| (_ BitVec 64))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~head#1.base_13|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~head#1.base_13| (_ bv0 1))))) is different from true [2024-11-28 03:28:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:38,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:38,321 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392863403] [2024-11-28 03:28:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392863403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:38,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:38,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:28:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332331582] [2024-11-28 03:28:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:38,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:28:38,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:38,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:28:38,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-28 03:28:38,322 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:38,947 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2024-11-28 03:28:38,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:28:38,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 03:28:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:38,948 INFO L225 Difference]: With dead ends: 131 [2024-11-28 03:28:38,948 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 03:28:38,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-28 03:28:38,949 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 1 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:38,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 233 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 103 Unchecked, 0.6s Time] [2024-11-28 03:28:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 03:28:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-28 03:28:38,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 90 states have (on average 1.4666666666666666) internal successors, (132), 114 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2024-11-28 03:28:38,952 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 23 [2024-11-28 03:28:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:38,952 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2024-11-28 03:28:38,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2024-11-28 03:28:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:28:38,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:38,953 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:38,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:28:39,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:39,154 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:39,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1934366138, now seen corresponding path program 1 times [2024-11-28 03:28:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:39,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574331919] [2024-11-28 03:28:39,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:39,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:39,156 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:39,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:28:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:39,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:28:39,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:39,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:39,528 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574331919] [2024-11-28 03:28:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574331919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:39,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:39,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:28:39,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303288043] [2024-11-28 03:28:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:39,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:28:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:39,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:28:39,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:28:39,529 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:40,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:40,085 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2024-11-28 03:28:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:28:40,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-28 03:28:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:40,086 INFO L225 Difference]: With dead ends: 114 [2024-11-28 03:28:40,086 INFO L226 Difference]: Without dead ends: 114 [2024-11-28 03:28:40,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:28:40,087 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:40,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 250 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:28:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-28 03:28:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-28 03:28:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.4555555555555555) internal successors, (131), 113 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2024-11-28 03:28:40,090 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 25 [2024-11-28 03:28:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:40,090 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2024-11-28 03:28:40,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2024-11-28 03:28:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:28:40,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:40,091 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:40,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 03:28:40,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:40,291 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:40,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 528124739, now seen corresponding path program 1 times [2024-11-28 03:28:40,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:40,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989065340] [2024-11-28 03:28:40,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:40,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:40,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:40,293 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:40,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:28:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:40,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:28:40,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:40,668 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:28:40,668 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:40,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989065340] [2024-11-28 03:28:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989065340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:28:40,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:28:40,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:28:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316368770] [2024-11-28 03:28:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:28:40,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:28:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:40,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:28:40,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:28:40,670 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:41,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:41,519 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-28 03:28:41,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:28:41,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-28 03:28:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:41,520 INFO L225 Difference]: With dead ends: 112 [2024-11-28 03:28:41,520 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 03:28:41,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:28:41,521 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 55 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:41,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 228 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:28:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 03:28:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-28 03:28:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-28 03:28:41,524 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 29 [2024-11-28 03:28:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:41,525 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-28 03:28:41,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-28 03:28:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:28:41,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:41,525 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:41,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 03:28:41,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:41,726 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:41,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -808071726, now seen corresponding path program 1 times [2024-11-28 03:28:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118516626] [2024-11-28 03:28:41,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:41,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:41,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:41,728 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:41,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:28:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:41,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:28:41,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:41,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:41,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:42,068 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:28:42,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:28:42,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:42,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:42,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:42,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:42,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:42,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:42,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:28:42,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 03:28:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:42,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:42,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-28 03:28:43,693 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 03:28:43,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 03:28:48,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:48,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 03:28:48,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-28 03:28:48,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:28:48,203 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-28 03:28:48,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-28 03:28:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:52,274 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:52,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118516626] [2024-11-28 03:28:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118516626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:52,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:28:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2024-11-28 03:28:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826619262] [2024-11-28 03:28:52,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:52,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:28:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:52,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:28:52,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=551, Unknown=27, NotChecked=0, Total=650 [2024-11-28 03:28:52,276 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:56,196 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2024-11-28 03:28:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:28:56,197 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:28:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:56,198 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:28:56,198 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 03:28:56,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=169, Invalid=1060, Unknown=31, NotChecked=0, Total=1260 [2024-11-28 03:28:56,199 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 107 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:56,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 698 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:28:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 03:28:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-11-28 03:28:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 102 states have (on average 1.392156862745098) internal successors, (142), 123 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 142 transitions. [2024-11-28 03:28:56,202 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 142 transitions. Word has length 30 [2024-11-28 03:28:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:56,203 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 142 transitions. [2024-11-28 03:28:56,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 142 transitions. [2024-11-28 03:28:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:28:56,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:56,203 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:56,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:28:56,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:56,404 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:28:56,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash -808071725, now seen corresponding path program 1 times [2024-11-28 03:28:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262589752] [2024-11-28 03:28:56,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:56,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:56,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:56,406 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:56,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:28:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:56,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:28:56,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:56,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:56,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:56,766 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:28:56,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:28:56,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:56,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:56,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:56,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:56,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:57,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:57,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:28:57,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:57,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:28:57,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:28:57,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:28:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:57,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:58,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2024-11-28 03:28:58,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2024-11-28 03:28:58,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2024-11-28 03:29:00,398 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ BitVec 64))) (or (forall ((v_ArrVal_959 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_21| v_ArrVal_959) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_create_~head~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (_ bv0 1))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ BitVec 64))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (_ bv0 1))) (forall ((v_ArrVal_960 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_create_~head~0#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21| v_ArrVal_960) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))))))) is different from false [2024-11-28 03:29:00,505 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:29:00,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 03:29:00,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2024-11-28 03:29:00,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:29:00,531 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-28 03:29:00,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-28 03:29:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-28 03:29:00,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:29:00,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262589752] [2024-11-28 03:29:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262589752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:29:00,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:29:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2024-11-28 03:29:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557861426] [2024-11-28 03:29:00,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:29:00,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:29:00,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:29:00,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:29:00,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=4, NotChecked=46, Total=650 [2024-11-28 03:29:00,636 INFO L87 Difference]: Start difference. First operand 124 states and 142 transitions. Second operand has 26 states, 25 states have (on average 2.36) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:06,984 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2024-11-28 03:29:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:29:06,985 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:29:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:06,985 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:29:06,985 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 03:29:06,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=4, NotChecked=66, Total=1260 [2024-11-28 03:29:06,986 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 103 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:06,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 701 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 672 Invalid, 0 Unknown, 79 Unchecked, 4.8s Time] [2024-11-28 03:29:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 03:29:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 124. [2024-11-28 03:29:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 123 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 140 transitions. [2024-11-28 03:29:06,990 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 140 transitions. Word has length 30 [2024-11-28 03:29:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:06,990 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 140 transitions. [2024-11-28 03:29:06,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 26 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 140 transitions. [2024-11-28 03:29:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:29:06,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:06,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:07,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 03:29:07,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:07,196 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:29:07,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -893174519, now seen corresponding path program 1 times [2024-11-28 03:29:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:29:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [792469075] [2024-11-28 03:29:07,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:07,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:07,200 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:07,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:29:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:07,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:29:07,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:07,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:29:07,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:29:07,650 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:29:07,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:29:07,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:29:07,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:29:07,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:29:07,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:29:07,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:29:08,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-28 03:29:08,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:29:08,386 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:29:08,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 03:29:08,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-28 03:29:08,683 INFO L349 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2024-11-28 03:29:08,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 44 [2024-11-28 03:29:08,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 03:29:08,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 03:29:08,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-28 03:29:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:09,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:29:09,988 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1097 (_ BitVec 1)) (v_ArrVal_1096 (_ BitVec 64)) (v_ArrVal_1099 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_23| (_ BitVec 64)) (v_ArrVal_1094 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_23|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_23| v_ArrVal_1097) (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_1094))) (store .cse0 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse0 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| v_ArrVal_1096))) |v_ULTIMATE.start_create_~ptr~0#1.base_23| v_ArrVal_1099) |c_ULTIMATE.start_create_~head~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (_ bv1 1))))) is different from false [2024-11-28 03:29:10,099 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1097 (_ BitVec 1)) (v_ArrVal_1096 (_ BitVec 64)) (v_ArrVal_1099 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_23| (_ BitVec 64)) (v_ArrVal_1094 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_23|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_23| v_ArrVal_1097) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~next#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~next#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start___list_add_~next#1.offset|) |c_ULTIMATE.start___list_add_~new#1.base|)) |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_1094))) (store .cse0 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse0 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| v_ArrVal_1096))) |v_ULTIMATE.start_create_~ptr~0#1.base_23| v_ArrVal_1099) |c_ULTIMATE.start_create_~head~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))))))) is different from false [2024-11-28 03:29:12,473 INFO L349 Elim1Store]: treesize reduction 118, result has 59.2 percent of original size [2024-11-28 03:29:12,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 272 treesize of output 358 [2024-11-28 03:29:12,631 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1090 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1096 (_ BitVec 64)) (v_ArrVal_1099 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1089 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_23| (_ BitVec 64)) (v_ArrVal_1094 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (select (select (store (let ((.cse4 (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1090) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse4 .cse3 |c_ULTIMATE.start_create_~ptr~0#1.base|)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1094)) (.cse2 (select .cse4 .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1089) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3) v_ArrVal_1096)))) |v_ULTIMATE.start_create_~ptr~0#1.base_23| v_ArrVal_1099) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| .cse0) (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_23|) (= |c_ULTIMATE.start_create_~ptr~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_23|) (= |c_ULTIMATE.start_create_~ptr~0#1.base| .cse0)))) is different from false [2024-11-28 03:29:12,866 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (forall ((v_ArrVal_1090 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1096 (_ BitVec 64)) (v_ArrVal_1099 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1089 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_23| (_ BitVec 64)) (v_ArrVal_1094 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (select (select (store (let ((.cse4 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_1090) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse4 .cse3 |v_ULTIMATE.start_create_~ptr~0#1.base_25|)) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_1094)) (.cse2 (select .cse4 .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_1089) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3) v_ArrVal_1096)))) |v_ULTIMATE.start_create_~ptr~0#1.base_23| v_ArrVal_1099) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| .cse0) (= |v_ULTIMATE.start_create_~ptr~0#1.base_23| |v_ULTIMATE.start_create_~ptr~0#1.base_25|) (= .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_25|) (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_23|)))))) is different from false [2024-11-28 03:29:13,310 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:29:13,481 INFO L349 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2024-11-28 03:29:13,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 5151 treesize of output 3618 [2024-11-28 03:29:13,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:29:13,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 523 treesize of output 453 [2024-11-28 03:29:13,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 661 treesize of output 607 [2024-11-28 03:29:13,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 313 [2024-11-28 03:29:13,728 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2024-11-28 03:29:13,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 625 treesize of output 601 [2024-11-28 03:29:13,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 215 [2024-11-28 03:29:13,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 165 [2024-11-28 03:29:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-28 03:29:17,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:29:17,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792469075] [2024-11-28 03:29:17,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792469075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:29:17,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:29:17,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 32 [2024-11-28 03:29:17,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775787038] [2024-11-28 03:29:17,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:29:17,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 03:29:17,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:29:17,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 03:29:17,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=665, Unknown=34, NotChecked=228, Total=1056 [2024-11-28 03:29:17,980 INFO L87 Difference]: Start difference. First operand 124 states and 140 transitions. Second operand has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:29:32,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:29:36,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:29:41,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:29:46,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:30:06,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:30:19,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:30:23,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:30:27,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:30:31,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:30:46,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:30:50,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:31:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:08,665 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2024-11-28 03:31:08,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:31:08,666 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 03:31:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:08,666 INFO L225 Difference]: With dead ends: 151 [2024-11-28 03:31:08,667 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 03:31:08,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 56.7s TimeCoverageRelationStatistics Valid=364, Invalid=1724, Unknown=90, NotChecked=372, Total=2550 [2024-11-28 03:31:08,668 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 115 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 25 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 60.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:08,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 925 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 745 Invalid, 46 Unknown, 361 Unchecked, 60.9s Time] [2024-11-28 03:31:08,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 03:31:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2024-11-28 03:31:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 149 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 169 transitions. [2024-11-28 03:31:08,672 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 169 transitions. Word has length 33 [2024-11-28 03:31:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:08,672 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 169 transitions. [2024-11-28 03:31:08,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.03125) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 169 transitions. [2024-11-28 03:31:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:31:08,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:08,673 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:08,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:31:08,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:08,877 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:31:08,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:08,877 INFO L85 PathProgramCache]: Analyzing trace with hash -893174518, now seen corresponding path program 1 times [2024-11-28 03:31:08,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:31:08,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183565155] [2024-11-28 03:31:08,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:08,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:08,879 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:08,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:31:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:09,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 03:31:09,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:09,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:31:09,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:31:09,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:31:09,713 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:31:09,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:31:09,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:31:09,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:31:10,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:31:10,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:31:11,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:31:11,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-28 03:31:11,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:31:11,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:31:11,901 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:31:11,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-28 03:31:11,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:31:12,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 24 [2024-11-28 03:31:12,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:31:13,048 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 03:31:13,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-28 03:31:13,227 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-28 03:31:13,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-11-28 03:31:13,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-28 03:31:13,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 03:31:13,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 03:31:13,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-28 03:31:14,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:31:14,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:31:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:14,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:15,579 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0)))) (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv8 64) .cse1)))))) is different from false [2024-11-28 03:31:47,853 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (bvadd (_ bv8 64) |c_ULTIMATE.start_list_add_tail_~head#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base|) .cse6 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) (.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse1 (store .cse2 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_1236))) (store .cse1 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base| (store (select .cse1 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base|) |c_ULTIMATE.start_list_add_tail_#t~mem3#1.offset| |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64)) (v_ArrVal_1237 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1240 (_ BitVec 64)) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse4 (store .cse2 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_1236))) (store .cse4 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base| (store (select .cse4 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base|) |c_ULTIMATE.start_list_add_tail_#t~mem3#1.offset| |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1240) (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base|) .cse6 |c_ULTIMATE.start_list_add_tail_~new#1.base|)) |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_1235))) (store .cse5 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base| (store (select .cse5 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base|) |c_ULTIMATE.start_list_add_tail_#t~mem3#1.offset| v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3))))))))) is different from false [2024-11-28 03:31:48,868 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base|)) (.cse10 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base|)) (.cse9 (bvadd (_ bv8 64) |c_ULTIMATE.start_list_add_tail_~head#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store .cse10 .cse9 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) (.cse2 (select .cse8 .cse9)) (.cse3 (select .cse10 .cse9)) (.cse5 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse1 (store .cse4 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_1236))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse5))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64)) (v_ArrVal_1237 (_ BitVec 64))) (or (forall ((v_ArrVal_1240 (_ BitVec 64)) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse6 (store .cse4 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_1236))) (store .cse6 .cse2 (store (select .cse6 .cse2) .cse3 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse5)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1240) (select (select (store (let ((.cse7 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store .cse8 .cse9 |c_ULTIMATE.start_list_add_tail_~new#1.base|)) |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_1235))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse3 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse5)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|)))))))) is different from false [2024-11-28 03:31:50,136 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse10 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse6 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|)) (.cse4 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~ptr~0#1.offset|))) (let ((.cse5 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse10 .cse6 .cse4))) (.cse2 (select .cse9 .cse6)) (.cse3 (select .cse10 .cse6))) (and (forall ((v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse1 (store .cse5 |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1236))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 .cse4))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse6))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64)) (v_ArrVal_1237 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1240 (_ BitVec 64)) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse7 (store .cse5 |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1236))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse3 .cse4))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse6)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1240) (select (select (store (let ((.cse8 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse9 .cse6 |c_ULTIMATE.start_create_~ptr~0#1.base|)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1235))) (store .cse8 .cse2 (store (select .cse8 .cse2) .cse3 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse6))))))))) is different from false [2024-11-28 03:32:17,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2115 treesize of output 1959 [2024-11-28 03:32:28,488 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse6 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (select .cse6 .cse4)) (.cse2 (select .cse3 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse3 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1236))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 (_ bv4 64)))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1237 (_ BitVec 64)) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse6 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_29|)) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1235))) (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))))))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse10 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse12 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse8 (select .cse12 .cse4)) (.cse9 (select .cse10 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse7 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse10 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1236))) (store .cse7 .cse8 (store (select .cse7 .cse8) .cse9 (_ bv4 64)))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1237 (_ BitVec 64)) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse11 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse12 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_29|)) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1235))) (store .cse11 .cse8 (store (select .cse11 .cse8) .cse9 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_29|)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (forall ((v_prenex_4 (_ BitVec 64)) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (or (let ((.cse13 (select (select (store (let ((.cse16 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_prenex_2) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse14 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse16 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_prenex_3)) (.cse15 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse14 .cse15 (store (select .cse14 .cse15) (select .cse16 .cse4) (_ bv4 64))))) v_prenex_4 v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse13 (bvadd (_ bv8 64) .cse13))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) v_prenex_4))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse19 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse17 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse19 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1236)) (.cse18 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse17 .cse18 (store (select .cse17 .cse18) (select .cse19 .cse4) (_ bv4 64))))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv24 64))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))))))) is different from true [2024-11-28 03:32:34,720 INFO L349 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2024-11-28 03:32:34,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 4444 treesize of output 3279 [2024-11-28 03:32:35,558 INFO L349 Elim1Store]: treesize reduction 33, result has 63.7 percent of original size [2024-11-28 03:32:35,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 3316 treesize of output 2925 [2024-11-28 03:32:36,053 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2024-11-28 03:32:36,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1199 treesize of output 1169 [2024-11-28 03:32:36,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:32:36,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 628 treesize of output 616 [2024-11-28 03:32:36,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 319 [2024-11-28 03:32:36,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 511 treesize of output 439 [2024-11-28 03:32:36,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 202 [2024-11-28 03:32:36,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 182 [2024-11-28 03:32:36,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 155 [2024-11-28 03:32:36,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 135 [2024-11-28 03:32:38,548 INFO L349 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2024-11-28 03:32:38,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 4299 treesize of output 3134 [2024-11-28 03:32:39,248 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2024-11-28 03:32:39,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 882 treesize of output 866 [2024-11-28 03:32:40,064 INFO L349 Elim1Store]: treesize reduction 23, result has 65.2 percent of original size [2024-11-28 03:32:40,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 6210 treesize of output 5456 [2024-11-28 03:32:40,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:32:40,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 681 treesize of output 669 [2024-11-28 03:32:40,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 421 [2024-11-28 03:32:40,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 315 treesize of output 303 [2024-11-28 03:32:40,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 172 [2024-11-28 03:32:40,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 152 [2024-11-28 03:32:40,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 124 [2024-11-28 03:32:40,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 122 [2024-11-28 03:32:42,378 INFO L349 Elim1Store]: treesize reduction 53, result has 62.4 percent of original size [2024-11-28 03:32:42,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 5270 treesize of output 4541 [2024-11-28 03:32:42,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:32:42,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 428 treesize of output 420 [2024-11-28 03:32:42,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 177 [2024-11-28 03:32:42,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 343 [2024-11-28 03:32:42,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 304 [2024-11-28 03:32:42,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:32:42,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 391 treesize of output 311 [2024-11-28 03:32:42,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 377 [2024-11-28 03:32:42,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 179 [2024-11-28 03:32:44,351 INFO L349 Elim1Store]: treesize reduction 53, result has 62.4 percent of original size [2024-11-28 03:32:44,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 4214 treesize of output 3405 [2024-11-28 03:32:44,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:32:44,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 564 treesize of output 544 [2024-11-28 03:32:44,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 204 [2024-11-28 03:32:45,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 407 treesize of output 375 [2024-11-28 03:32:45,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 368 treesize of output 304 [2024-11-28 03:32:45,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:32:45,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 391 treesize of output 311 [2024-11-28 03:32:45,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 437 treesize of output 377 [2024-11-28 03:32:45,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 179 [2024-11-28 03:33:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2024-11-28 03:33:03,732 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:33:03,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183565155] [2024-11-28 03:33:03,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183565155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:33:03,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:33:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2024-11-28 03:33:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579370418] [2024-11-28 03:33:03,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:33:03,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 03:33:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:33:03,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 03:33:03,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=667, Unknown=36, NotChecked=290, Total=1122 [2024-11-28 03:33:03,734 INFO L87 Difference]: Start difference. First operand 150 states and 169 transitions. Second operand has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:33:12,667 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse17 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (let ((.cse8 (select .cse17 .cse4))) (let ((.cse9 (bvadd (_ bv8 64) .cse8)) (.cse7 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse6 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (select .cse6 .cse4)) (.cse2 (select .cse3 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse3 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1236))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 (_ bv4 64)))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1237 (_ BitVec 64)) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse6 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_29|)) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1235))) (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))))))))) (= (_ bv0 64) |c_ULTIMATE.start_create_~head~0#1.offset|) (= |c_ULTIMATE.start_create_~head~0#1.base| (select .cse7 (_ bv8 64))) (bvule .cse8 .cse9) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_create_~head~0#1.base|))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse13 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse15 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse11 (select .cse15 .cse4)) (.cse12 (select .cse13 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse10 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse13 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1236))) (store .cse10 .cse11 (store (select .cse10 .cse11) .cse12 (_ bv4 64)))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1237 (_ BitVec 64)) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse14 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse15 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_29|)) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1235))) (store .cse14 .cse11 (store (select .cse14 .cse11) .cse12 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_29|)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))) (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse16 (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse16 (bvadd (_ bv8 64) .cse16)))))) (= (_ bv0 64) (select .cse17 (_ bv8 64))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (forall ((v_prenex_4 (_ BitVec 64)) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_3 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (or (let ((.cse18 (select (select (store (let ((.cse21 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_prenex_2) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse19 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse21 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_prenex_3)) (.cse20 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse19 .cse20 (store (select .cse19 .cse20) (select .cse21 .cse4) (_ bv4 64))))) v_prenex_4 v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse18 (bvadd (_ bv8 64) .cse18))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) v_prenex_4))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ BitVec 64))) (or (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse24 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse22 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse24 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1236)) (.cse23 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_29| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse22 .cse23 (store (select .cse22 .cse23) (select .cse24 .cse4) (_ bv4 64))))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv24 64))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29| (_ bv1 1)) |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_29|))))) (bvule .cse9 (select |c_#length| (select .cse7 .cse4))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1240 (_ BitVec 64)) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1240) (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))))))) is different from true [2024-11-28 03:33:27,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:33:29,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:33:41,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:33:43,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:33:46,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:33:49,992 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse9 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~ptr~0#1.offset|)) (.cse1 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (let ((.cse3 (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse13 (select (select (store (let ((.cse16 (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse14 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse16 .cse1 .cse9)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1236)) (.cse15 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1))) (store .cse14 .cse15 (store (select .cse14 .cse15) (select .cse16 .cse1) .cse9)))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1))) (bvule .cse13 (bvadd (_ bv8 64) .cse13)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|)))))) (.cse0 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse4 (forall ((v_ArrVal_1228 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1227 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1235 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1236 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64)) (v_ArrVal_1237 (_ BitVec 64))) (or (forall ((v_ArrVal_1240 (_ BitVec 64)) (v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse10 (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1227) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse12 (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1228) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse7 (select .cse12 .cse1)) (.cse8 (select .cse10 .cse1))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse6 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse10 .cse1 .cse9)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1236))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 .cse9))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1240) (select (select (store (let ((.cse11 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse12 .cse1 |c_ULTIMATE.start_create_~ptr~0#1.base|)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1235))) (store .cse11 .cse7 (store (select .cse11 .cse7) .cse8 v_ArrVal_1237))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|)))))) (.cse2 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base|) (_ bv8 64)))) (and (= (select .cse0 (_ bv0 64)) (_ bv4 64)) (= (_ bv0 64) |c_ULTIMATE.start_create_~head~0#1.offset|) (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1243 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1243) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_create_~head~0#1.base|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| .cse2))) .cse3 (or (and .cse3 .cse4) (not (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_create_~ptr~0#1.base|))))) (not (= |c_ULTIMATE.start_create_~head~0#1.base| .cse2)) (= (_ bv4 64) (select .cse0 (_ bv8 64))) (not (= |c_ULTIMATE.start_create_~ptr~0#1.base| .cse2)) (not (= |c_ULTIMATE.start_create_~head~0#1.base| |c_ULTIMATE.start_create_~ptr~0#1.base|)) .cse4 (forall ((v_ArrVal_1244 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_1244) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1))) (bvule .cse5 (bvadd (_ bv8 64) .cse5)))) (= (_ bv24 64) (select |c_#length| .cse2))))) is different from false [2024-11-28 03:34:09,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:34:13,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:34:40,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:34:44,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:34:49,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:35:28,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:35:30,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:35:35,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:35:39,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:09,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:14,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:18,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:22,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:27,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:55,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:36:59,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:02,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:06,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:11,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:15,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:19,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:54,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:37:59,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:04,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:09,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:13,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:17,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:21,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:50,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:52,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:56,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:38:58,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:02,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:03,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:08,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:12,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:44,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:48,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:51,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:54,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:39:56,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:00,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:02,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:07,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:12,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:14,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:35,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:38,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:43,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:40:44,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:41:27,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:41:28,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:41:35,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:41:39,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:41:53,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:41:55,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:00,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:04,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:19,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:35,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:41,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:43,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:51,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:53,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:42:54,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:43:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:02,162 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2024-11-28 03:43:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:43:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 03:43:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:02,171 INFO L225 Difference]: With dead ends: 151 [2024-11-28 03:43:02,171 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 03:43:02,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 380.3s TimeCoverageRelationStatistics Valid=353, Invalid=1930, Unknown=97, NotChecked=700, Total=3080 [2024-11-28 03:43:02,172 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 103 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 25 mSolverCounterUnsat, 85 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 295.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 85 IncrementalHoareTripleChecker+Unknown, 562 IncrementalHoareTripleChecker+Unchecked, 300.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:02,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 800 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 817 Invalid, 85 Unknown, 562 Unchecked, 300.0s Time] [2024-11-28 03:43:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 03:43:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2024-11-28 03:43:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3046875) internal successors, (167), 149 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2024-11-28 03:43:02,177 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 33 [2024-11-28 03:43:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:02,177 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2024-11-28 03:43:02,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 34 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2024-11-28 03:43:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:43:02,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:02,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:02,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:02,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:02,383 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-28 03:43:02,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 136951145, now seen corresponding path program 1 times [2024-11-28 03:43:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:43:02,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954711346] [2024-11-28 03:43:02,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:02,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:02,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:02,385 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:02,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa00254-8910-4f92-a86c-595ea6f9d85a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:43:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:02,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 03:43:02,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:03,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:43:03,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:43:05,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:43:06,130 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:43:06,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:43:07,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:43:07,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:43:08,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:43:08,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:43:10,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:43:11,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:43:14,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:43:17,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:43:19,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:43:19,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29