./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-list-lst-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_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/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_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/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_f32a166e-742e-48ed-a876-c7b076b9fbc3/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 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:29:03,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:29:03,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-27 23:29:03,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:29:03,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:29:03,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:29:03,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:29:03,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:29:03,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:29:03,943 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:29:03,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:29:03,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:29:03,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:29:03,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:29:03,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:29:03,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:29:03,945 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:03,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:03,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:29:03,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:03,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:03,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:03,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:03,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:29:03,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:29:03,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:29:03,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:29:03,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:29:03,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:29:03,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:29:03,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:29:03,950 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_f32a166e-742e-48ed-a876-c7b076b9fbc3/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 -> 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a [2024-11-27 23:29:04,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:29:04,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:29:04,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:29:04,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:29:04,349 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:29:04,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i [2024-11-27 23:29:07,525 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/d326558d3/306f719bb42d409296be77a233741076/FLAG4ab79dd85 [2024-11-27 23:29:07,942 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:29:07,942 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i [2024-11-27 23:29:07,975 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/d326558d3/306f719bb42d409296be77a233741076/FLAG4ab79dd85 [2024-11-27 23:29:07,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/d326558d3/306f719bb42d409296be77a233741076 [2024-11-27 23:29:07,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:29:07,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:29:07,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:07,998 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:29:08,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:29:08,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:07" (1/1) ... [2024-11-27 23:29:08,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e53978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:08, skipping insertion in model container [2024-11-27 23:29:08,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:07" (1/1) ... [2024-11-27 23:29:08,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:08,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:08,487 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-27 23:29:08,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41f121f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:08, skipping insertion in model container [2024-11-27 23:29:08,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:08,488 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-27 23:29:08,490 INFO L158 Benchmark]: Toolchain (without parser) took 493.01ms. Allocated memory is still 142.6MB. Free memory was 115.9MB in the beginning and 101.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:29:08,491 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:29:08,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.04ms. Allocated memory is still 142.6MB. Free memory was 115.7MB in the beginning and 101.3MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:29:08,493 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.04ms. Allocated memory is still 142.6MB. Free memory was 115.7MB in the beginning and 101.3MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2490]: 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_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/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_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/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_f32a166e-742e-48ed-a876-c7b076b9fbc3/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 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:29:11,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:29:11,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-27 23:29:11,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:29:11,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:29:11,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:29:11,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:29:11,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:29:11,376 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:29:11,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:29:11,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:29:11,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:29:11,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:29:11,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:29:11,378 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:29:11,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:29:11,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:29:11,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:29:11,378 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:29:11,378 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:29:11,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:29:11,380 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:29:11,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:11,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:11,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:11,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:11,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:29:11,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:29:11,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:29:11,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:29:11,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:11,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:29:11,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:29:11,381 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:29:11,381 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:29:11,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:29:11,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:29:11,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:29:11,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:29:11,382 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_f32a166e-742e-48ed-a876-c7b076b9fbc3/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 -> 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a [2024-11-27 23:29:11,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:29:11,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:29:11,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:29:11,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:29:11,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:29:11,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i [2024-11-27 23:29:14,915 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/6a14f46dd/2f6831f2b1d347c9a3f037deb32a391b/FLAG989187f02 [2024-11-27 23:29:15,313 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:29:15,314 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i [2024-11-27 23:29:15,361 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/6a14f46dd/2f6831f2b1d347c9a3f037deb32a391b/FLAG989187f02 [2024-11-27 23:29:15,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/data/6a14f46dd/2f6831f2b1d347c9a3f037deb32a391b [2024-11-27 23:29:15,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:29:15,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:29:15,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:15,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:29:15,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:29:15,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:15" (1/1) ... [2024-11-27 23:29:15,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58454b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:15, skipping insertion in model container [2024-11-27 23:29:15,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:29:15" (1/1) ... [2024-11-27 23:29:15,477 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:15,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:15,972 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-27 23:29:16,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:29:16,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:16,084 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:29:16,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:29:16,209 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:29:16,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16 WrapperNode [2024-11-27 23:29:16,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:29:16,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:29:16,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:29:16,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:29:16,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,273 INFO L138 Inliner]: procedures = 125, calls = 33, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 98 [2024-11-27 23:29:16,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:29:16,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:29:16,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:29:16,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:29:16,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,316 INFO L175 MemorySlicer]: Split 19 memory accesses to 1 slices as follows [19]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 11 writes are split as follows [11]. [2024-11-27 23:29:16,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,327 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:29:16,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:29:16,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:29:16,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:29:16,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (1/1) ... [2024-11-27 23:29:16,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:29:16,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:16,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:29:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:29:16,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:29:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:29:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:29:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:29:16,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-27 23:29:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:29:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:29:16,563 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:29:16,566 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:29:17,388 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-11-27 23:29:17,389 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:29:17,406 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:29:17,408 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:29:17,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:29:17 BoogieIcfgContainer [2024-11-27 23:29:17,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:29:17,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:29:17,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:29:17,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:29:17,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:29:15" (1/3) ... [2024-11-27 23:29:17,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc54c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:29:17, skipping insertion in model container [2024-11-27 23:29:17,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:29:16" (2/3) ... [2024-11-27 23:29:17,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc54c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:29:17, skipping insertion in model container [2024-11-27 23:29:17,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:29:17" (3/3) ... [2024-11-27 23:29:17,423 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-list-lst-data.i [2024-11-27 23:29:17,440 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:29:17,441 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-list-lst-data.i that has 1 procedures, 100 locations, 1 initial locations, 4 loop locations, and 45 error locations. [2024-11-27 23:29:17,483 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:29:17,496 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;@2e150beb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:29:17,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-11-27 23:29:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 99 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 23:29:17,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:17,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 23:29:17,507 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:17,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2024-11-27 23:29:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181791433] [2024-11-27 23:29:17,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:17,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:17,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:17,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:17,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:29:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:17,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:29:17,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:17,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:29:17,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:17,740 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:17,741 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:17,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181791433] [2024-11-27 23:29:17,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181791433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:17,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:17,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:29:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700686608] [2024-11-27 23:29:17,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:17,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:29:17,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:17,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:29:17,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:29:17,786 INFO L87 Difference]: Start difference. First operand has 100 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 99 states have internal predecessors, (107), 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) [2024-11-27 23:29:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:18,166 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2024-11-27 23:29:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:29:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-27 23:29:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:18,177 INFO L225 Difference]: With dead ends: 98 [2024-11-27 23:29:18,178 INFO L226 Difference]: Without dead ends: 96 [2024-11-27 23:29:18,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:29:18,187 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 28 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:18,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:29:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-27 23:29:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-27 23:29:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.849056603773585) 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) [2024-11-27 23:29:18,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 98 transitions. [2024-11-27 23:29:18,237 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 98 transitions. Word has length 3 [2024-11-27 23:29:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:18,238 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 98 transitions. [2024-11-27 23:29:18,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 98 transitions. [2024-11-27 23:29:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 23:29:18,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:18,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 23:29:18,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:29:18,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:18,440 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:18,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2024-11-27 23:29:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:18,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421631059] [2024-11-27 23:29:18,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:18,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:18,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:18,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:18,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:29:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:18,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:18,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:18,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:18,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:18,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421631059] [2024-11-27 23:29:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421631059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:29:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137770656] [2024-11-27 23:29:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:18,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:29:18,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:18,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:29:18,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:29:18,547 INFO L87 Difference]: Start difference. First operand 96 states and 98 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:18,991 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2024-11-27 23:29:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:29:18,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-27 23:29:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:18,993 INFO L225 Difference]: With dead ends: 98 [2024-11-27 23:29:18,993 INFO L226 Difference]: Without dead ends: 98 [2024-11-27 23:29:18,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:29:18,994 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:18,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:29:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-27 23:29:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-11-27 23:29:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 53 states have (on average 1.8113207547169812) 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) [2024-11-27 23:29:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2024-11-27 23:29:19,009 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 3 [2024-11-27 23:29:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:19,009 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2024-11-27 23:29:19,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2024-11-27 23:29:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:29:19,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:19,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:19,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:29:19,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:19,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:19,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash 297344495, now seen corresponding path program 1 times [2024-11-27 23:29:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429149073] [2024-11-27 23:29:19,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:19,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:19,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:29:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:19,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 23:29:19,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:19,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:29:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:19,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:19,330 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:19,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429149073] [2024-11-27 23:29:19,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429149073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:19,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:29:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638371808] [2024-11-27 23:29:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:19,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:29:19,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:19,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:29:19,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:29:19,333 INFO L87 Difference]: Start difference. First operand 94 states and 96 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) [2024-11-27 23:29:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:19,586 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-27 23:29:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:29:19,587 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 [2024-11-27 23:29:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:19,588 INFO L225 Difference]: With dead ends: 93 [2024-11-27 23:29:19,588 INFO L226 Difference]: Without dead ends: 93 [2024-11-27 23:29:19,589 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 [2024-11-27 23:29:19,589 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:19,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 140 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:29:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-27 23:29:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-27 23:29:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 53 states have (on average 1.7924528301886793) 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) [2024-11-27 23:29:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-11-27 23:29:19,597 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 9 [2024-11-27 23:29:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:19,597 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-11-27 23:29:19,597 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) [2024-11-27 23:29:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-11-27 23:29:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:29:19,598 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:19,598 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:19,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:29:19,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:19,803 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:19,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 297344496, now seen corresponding path program 1 times [2024-11-27 23:29:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:19,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634524127] [2024-11-27 23:29:19,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:19,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:19,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:19,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:29:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:19,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:19,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:19,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:19,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:19,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:19,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634524127] [2024-11-27 23:29:19,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634524127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:19,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:19,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:29:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142249281] [2024-11-27 23:29:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:19,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:29:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:19,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:29:19,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:29:19,920 INFO L87 Difference]: Start difference. First operand 93 states and 95 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) [2024-11-27 23:29:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:20,310 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2024-11-27 23:29:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:29:20,311 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 [2024-11-27 23:29:20,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:20,312 INFO L225 Difference]: With dead ends: 92 [2024-11-27 23:29:20,312 INFO L226 Difference]: Without dead ends: 92 [2024-11-27 23:29:20,312 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 [2024-11-27 23:29:20,313 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:20,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 146 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:29:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-27 23:29:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-27 23:29:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.7735849056603774) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2024-11-27 23:29:20,320 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 9 [2024-11-27 23:29:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:20,320 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2024-11-27 23:29:20,320 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) [2024-11-27 23:29:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2024-11-27 23:29:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:29:20,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:20,321 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:20,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:29:20,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:20,522 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:20,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash 627832173, now seen corresponding path program 1 times [2024-11-27 23:29:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162322461] [2024-11-27 23:29:20,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:20,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:20,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:29:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:20,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:29:20,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:20,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:20,665 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162322461] [2024-11-27 23:29:20,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162322461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:20,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787962264] [2024-11-27 23:29:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:20,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:20,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:20,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:20,666 INFO L87 Difference]: Start difference. First operand 92 states and 94 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) [2024-11-27 23:29:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:21,124 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2024-11-27 23:29:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:21,127 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 [2024-11-27 23:29:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:21,127 INFO L225 Difference]: With dead ends: 91 [2024-11-27 23:29:21,128 INFO L226 Difference]: Without dead ends: 91 [2024-11-27 23:29:21,128 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 [2024-11-27 23:29:21,129 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 30 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:21,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 187 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:29:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-27 23:29:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-27 23:29:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2024-11-27 23:29:21,135 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 10 [2024-11-27 23:29:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:21,136 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2024-11-27 23:29:21,136 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) [2024-11-27 23:29:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2024-11-27 23:29:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 23:29:21,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:21,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:21,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:29:21,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:21,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:21,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash 627832174, now seen corresponding path program 1 times [2024-11-27 23:29:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927098645] [2024-11-27 23:29:21,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:21,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:21,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:21,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:21,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:29:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:21,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:29:21,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:21,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:21,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:21,630 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927098645] [2024-11-27 23:29:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927098645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099232166] [2024-11-27 23:29:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:21,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:21,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:21,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:21,632 INFO L87 Difference]: Start difference. First operand 91 states and 93 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) [2024-11-27 23:29:22,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:22,234 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2024-11-27 23:29:22,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:22,235 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 [2024-11-27 23:29:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:22,236 INFO L225 Difference]: With dead ends: 105 [2024-11-27 23:29:22,236 INFO L226 Difference]: Without dead ends: 105 [2024-11-27 23:29:22,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:22,237 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 10 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:22,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 236 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:29:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-27 23:29:22,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-11-27 23:29:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.706896551724138) 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) [2024-11-27 23:29:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 99 transitions. [2024-11-27 23:29:22,245 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 99 transitions. Word has length 10 [2024-11-27 23:29:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:22,245 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 99 transitions. [2024-11-27 23:29:22,245 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) [2024-11-27 23:29:22,245 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 99 transitions. [2024-11-27 23:29:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:29:22,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:22,246 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:22,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:29:22,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:22,447 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:22,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2014749008, now seen corresponding path program 1 times [2024-11-27 23:29:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688441483] [2024-11-27 23:29:22,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:22,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:22,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:29:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:22,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:29:22,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:22,638 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-27 23:29:22,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 23:29:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:22,667 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:22,667 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:22,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688441483] [2024-11-27 23:29:22,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688441483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:22,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:29:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362617478] [2024-11-27 23:29:22,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:22,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:29:22,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:22,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:29:22,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:29:22,668 INFO L87 Difference]: Start difference. First operand 96 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:23,039 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-11-27 23:29:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:29:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-27 23:29:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:23,041 INFO L225 Difference]: With dead ends: 95 [2024-11-27 23:29:23,041 INFO L226 Difference]: Without dead ends: 95 [2024-11-27 23:29:23,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:23,042 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 20 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:23,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 157 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:29:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-27 23:29:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-27 23:29:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.6896551724137931) internal successors, (98), 94 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) [2024-11-27 23:29:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2024-11-27 23:29:23,048 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 11 [2024-11-27 23:29:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:23,048 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2024-11-27 23:29:23,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2024-11-27 23:29:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 23:29:23,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:23,049 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:23,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:29:23,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:23,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:23,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2014749007, now seen corresponding path program 1 times [2024-11-27 23:29:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:23,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016147533] [2024-11-27 23:29:23,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:23,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:23,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:23,255 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:23,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:29:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:23,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:29:23,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:23,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:29:23,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-27 23:29:23,558 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:23,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:29:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:23,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:23,608 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:23,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016147533] [2024-11-27 23:29:23,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016147533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:23,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388853013] [2024-11-27 23:29:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:23,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:23,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:23,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:23,610 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:24,195 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2024-11-27 23:29:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:29:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2024-11-27 23:29:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:24,197 INFO L225 Difference]: With dead ends: 94 [2024-11-27 23:29:24,197 INFO L226 Difference]: Without dead ends: 94 [2024-11-27 23:29:24,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:29:24,198 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:24,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 184 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:29:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-27 23:29:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-27 23:29:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.6724137931034482) internal successors, (97), 93 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2024-11-27 23:29:24,208 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 11 [2024-11-27 23:29:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:24,208 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2024-11-27 23:29:24,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2024-11-27 23:29:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:29:24,208 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:24,212 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:24,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:29:24,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:24,413 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:24,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash 856454065, now seen corresponding path program 1 times [2024-11-27 23:29:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623302436] [2024-11-27 23:29:24,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:24,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:24,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:24,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:24,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:29:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:24,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:24,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:24,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:24,545 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623302436] [2024-11-27 23:29:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623302436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:24,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:24,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:29:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365692124] [2024-11-27 23:29:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:24,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:29:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:24,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:29:24,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:29:24,548 INFO L87 Difference]: Start difference. First operand 94 states and 97 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:24,882 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2024-11-27 23:29:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:29:24,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 23:29:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:24,883 INFO L225 Difference]: With dead ends: 93 [2024-11-27 23:29:24,883 INFO L226 Difference]: Without dead ends: 93 [2024-11-27 23:29:24,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:29:24,884 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 3 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 177 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 [2024-11-27 23:29:24,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 177 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:29:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-27 23:29:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-27 23:29:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 92 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) [2024-11-27 23:29:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2024-11-27 23:29:24,889 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 13 [2024-11-27 23:29:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:24,890 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2024-11-27 23:29:24,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2024-11-27 23:29:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-27 23:29:24,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:24,891 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:24,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:29:25,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:25,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:25,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 856454066, now seen corresponding path program 1 times [2024-11-27 23:29:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:25,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734390225] [2024-11-27 23:29:25,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:25,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:25,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:25,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:29:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:25,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:29:25,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:25,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:25,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734390225] [2024-11-27 23:29:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734390225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:25,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:29:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765205290] [2024-11-27 23:29:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:25,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:29:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:25,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:29:25,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:29:25,313 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:25,743 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2024-11-27 23:29:25,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:29:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-27 23:29:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:25,744 INFO L225 Difference]: With dead ends: 92 [2024-11-27 23:29:25,744 INFO L226 Difference]: Without dead ends: 92 [2024-11-27 23:29:25,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:29:25,745 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 19 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:25,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 271 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:29:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-27 23:29:25,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-27 23:29:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 58 states have (on average 1.6379310344827587) internal successors, (95), 91 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) [2024-11-27 23:29:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-11-27 23:29:25,750 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 13 [2024-11-27 23:29:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:25,751 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-11-27 23:29:25,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-11-27 23:29:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:29:25,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:25,752 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:25,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:25,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:25,956 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:25,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 780272251, now seen corresponding path program 1 times [2024-11-27 23:29:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613776766] [2024-11-27 23:29:25,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:25,960 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:25,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:29:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:26,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:29:26,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:26,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:26,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:26,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613776766] [2024-11-27 23:29:26,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613776766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:26,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:26,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849001809] [2024-11-27 23:29:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:26,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:26,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:26,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:26,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:26,137 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2024-11-27 23:29:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:26,639 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-11-27 23:29:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 [2024-11-27 23:29:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:26,640 INFO L225 Difference]: With dead ends: 90 [2024-11-27 23:29:26,640 INFO L226 Difference]: Without dead ends: 90 [2024-11-27 23:29:26,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:26,641 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:26,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 206 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:29:26,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-27 23:29:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-27 23:29:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.603448275862069) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-27 23:29:26,653 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 14 [2024-11-27 23:29:26,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:26,653 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-27 23:29:26,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2024-11-27 23:29:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-27 23:29:26,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:29:26,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:26,654 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:26,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:29:26,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:26,855 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:26,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash 780272252, now seen corresponding path program 1 times [2024-11-27 23:29:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:26,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573502049] [2024-11-27 23:29:26,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:26,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:26,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:26,858 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:26,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:29:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:26,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:29:27,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:27,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:27,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:27,134 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573502049] [2024-11-27 23:29:27,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573502049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:27,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:27,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:29:27,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398920404] [2024-11-27 23:29:27,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:27,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:29:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:27,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:29:27,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:27,136 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2024-11-27 23:29:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:27,627 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2024-11-27 23:29:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:27,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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 [2024-11-27 23:29:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:27,628 INFO L225 Difference]: With dead ends: 88 [2024-11-27 23:29:27,628 INFO L226 Difference]: Without dead ends: 88 [2024-11-27 23:29:27,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:27,629 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:27,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 221 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:29:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-27 23:29:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-27 23:29:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 87 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2024-11-27 23:29:27,633 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 14 [2024-11-27 23:29:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:27,634 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2024-11-27 23:29:27,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 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) [2024-11-27 23:29:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2024-11-27 23:29:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:29:27,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:27,635 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:27,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:29:27,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:27,835 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:27,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -92696586, now seen corresponding path program 1 times [2024-11-27 23:29:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:27,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262636934] [2024-11-27 23:29:27,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:27,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:27,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:27,841 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:27,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:29:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:27,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:29:27,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:28,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:28,038 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:28,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262636934] [2024-11-27 23:29:28,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262636934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:28,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:28,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:29:28,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298501522] [2024-11-27 23:29:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:28,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:29:28,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:28,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:29:28,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:29:28,039 INFO L87 Difference]: Start difference. First operand 88 states and 91 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) [2024-11-27 23:29:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:28,788 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2024-11-27 23:29:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:29:28,789 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 [2024-11-27 23:29:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:28,790 INFO L225 Difference]: With dead ends: 120 [2024-11-27 23:29:28,790 INFO L226 Difference]: Without dead ends: 120 [2024-11-27 23:29:28,790 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 [2024-11-27 23:29:28,791 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 59 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:28,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 176 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:29:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-27 23:29:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2024-11-27 23:29:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.564516129032258) internal successors, (97), 90 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2024-11-27 23:29:28,796 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 14 [2024-11-27 23:29:28,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:28,796 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2024-11-27 23:29:28,796 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) [2024-11-27 23:29:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2024-11-27 23:29:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-27 23:29:28,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:28,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:28,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:29:28,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:28,998 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:28,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -92696585, now seen corresponding path program 1 times [2024-11-27 23:29:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250110182] [2024-11-27 23:29:28,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:28,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:28,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:29,001 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:29:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:29,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:29:29,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:29,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:29,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:29,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:29,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250110182] [2024-11-27 23:29:29,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250110182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:29,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:29,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:29:29,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942920174] [2024-11-27 23:29:29,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:29,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:29:29,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:29,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:29:29,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:29:29,303 INFO L87 Difference]: Start difference. First operand 91 states and 97 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) [2024-11-27 23:29:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:30,132 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2024-11-27 23:29:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:29:30,133 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 [2024-11-27 23:29:30,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:30,134 INFO L225 Difference]: With dead ends: 143 [2024-11-27 23:29:30,134 INFO L226 Difference]: Without dead ends: 143 [2024-11-27 23:29:30,134 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 [2024-11-27 23:29:30,135 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 48 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:30,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 227 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:29:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-27 23:29:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 121. [2024-11-27 23:29:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.641304347826087) internal successors, (151), 120 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2024-11-27 23:29:30,140 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 14 [2024-11-27 23:29:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:30,140 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2024-11-27 23:29:30,140 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) [2024-11-27 23:29:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2024-11-27 23:29:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 23:29:30,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:30,141 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:30,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:29:30,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:30,342 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:30,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1421303706, now seen corresponding path program 1 times [2024-11-27 23:29:30,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:30,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907473943] [2024-11-27 23:29:30,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:30,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:30,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:30,345 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:30,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:29:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:30,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:29:30,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:30,463 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 [2024-11-27 23:29:30,500 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 [2024-11-27 23:29:30,628 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 [2024-11-27 23:29:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:30,681 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:30,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:30,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907473943] [2024-11-27 23:29:30,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907473943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:30,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:30,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:29:30,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228235756] [2024-11-27 23:29:30,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:30,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:29:30,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:30,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:29:30,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:29:30,683 INFO L87 Difference]: Start difference. First operand 121 states and 151 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) [2024-11-27 23:29:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:31,638 INFO L93 Difference]: Finished difference Result 129 states and 159 transitions. [2024-11-27 23:29:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:29:31,638 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 [2024-11-27 23:29:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:31,639 INFO L225 Difference]: With dead ends: 129 [2024-11-27 23:29:31,639 INFO L226 Difference]: Without dead ends: 129 [2024-11-27 23:29:31,640 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 [2024-11-27 23:29:31,640 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 15 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:31,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 267 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:29:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-27 23:29:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2024-11-27 23:29:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.6354166666666667) internal successors, (157), 124 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) [2024-11-27 23:29:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 157 transitions. [2024-11-27 23:29:31,646 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 157 transitions. Word has length 15 [2024-11-27 23:29:31,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:31,646 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 157 transitions. [2024-11-27 23:29:31,646 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) [2024-11-27 23:29:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 157 transitions. [2024-11-27 23:29:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 23:29:31,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:31,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:31,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:29:31,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:31,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:31,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1421303707, now seen corresponding path program 1 times [2024-11-27 23:29:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:31,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45246020] [2024-11-27 23:29:31,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:31,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:31,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:31,852 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:31,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:29:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:31,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 23:29:31,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:31,982 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 [2024-11-27 23:29:31,994 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 [2024-11-27 23:29:32,032 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 [2024-11-27 23:29:32,067 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 [2024-11-27 23:29:32,303 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 [2024-11-27 23:29:32,316 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 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-27 23:29:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:32,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:32,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45246020] [2024-11-27 23:29:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45246020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:32,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:32,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:29:32,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990709112] [2024-11-27 23:29:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:32,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:29:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:32,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:29:32,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:29:32,414 INFO L87 Difference]: Start difference. First operand 125 states and 157 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) [2024-11-27 23:29:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:33,085 INFO L93 Difference]: Finished difference Result 119 states and 146 transitions. [2024-11-27 23:29:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:29:33,086 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 [2024-11-27 23:29:33,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:33,087 INFO L225 Difference]: With dead ends: 119 [2024-11-27 23:29:33,087 INFO L226 Difference]: Without dead ends: 119 [2024-11-27 23:29:33,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:29:33,087 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:33,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 399 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:29:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-27 23:29:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2024-11-27 23:29:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.6363636363636365) internal successors, (144), 116 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2024-11-27 23:29:33,092 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 15 [2024-11-27 23:29:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:33,092 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2024-11-27 23:29:33,092 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) [2024-11-27 23:29:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2024-11-27 23:29:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 23:29:33,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:33,093 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:33,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 23:29:33,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:33,296 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:33,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1777643106, now seen corresponding path program 1 times [2024-11-27 23:29:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664055320] [2024-11-27 23:29:33,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:33,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:33,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:33,299 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:33,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:29:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:33,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:29:33,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:33,497 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 [2024-11-27 23:29:33,617 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:33,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:29:33,671 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 [2024-11-27 23:29:33,753 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 [2024-11-27 23:29:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:33,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:33,821 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664055320] [2024-11-27 23:29:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664055320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:29:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947185426] [2024-11-27 23:29:33,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:33,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:29:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:33,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:29:33,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:29:33,823 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2024-11-27 23:29:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:34,680 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-27 23:29:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:29:34,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 [2024-11-27 23:29:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:34,682 INFO L225 Difference]: With dead ends: 126 [2024-11-27 23:29:34,682 INFO L226 Difference]: Without dead ends: 126 [2024-11-27 23:29:34,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:29:34,683 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 54 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:34,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 283 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:29:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-27 23:29:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-27 23:29:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 97 states have (on average 1.5876288659793814) internal successors, (154), 125 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2024-11-27 23:29:34,689 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 16 [2024-11-27 23:29:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:34,690 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2024-11-27 23:29:34,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2024-11-27 23:29:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2024-11-27 23:29:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 23:29:34,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:34,690 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:34,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:29:34,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:34,891 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:34,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1777643105, now seen corresponding path program 1 times [2024-11-27 23:29:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584918886] [2024-11-27 23:29:34,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:34,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:34,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:34,896 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:34,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:29:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:35,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:29:35,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:35,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:35,155 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 [2024-11-27 23:29:35,174 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 [2024-11-27 23:29:35,345 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:35,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:29:35,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-27 23:29:35,452 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 [2024-11-27 23:29:35,462 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 [2024-11-27 23:29:35,592 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 [2024-11-27 23:29:35,601 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 [2024-11-27 23:29:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:35,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:35,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584918886] [2024-11-27 23:29:35,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584918886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:35,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:35,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:29:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107445825] [2024-11-27 23:29:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:35,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:29:35,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:35,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:29:35,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:29:35,710 INFO L87 Difference]: Start difference. First operand 126 states and 154 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2024-11-27 23:29:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:37,004 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2024-11-27 23:29:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:29:37,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 [2024-11-27 23:29:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:37,005 INFO L225 Difference]: With dead ends: 126 [2024-11-27 23:29:37,005 INFO L226 Difference]: Without dead ends: 126 [2024-11-27 23:29:37,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:29:37,006 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 33 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:37,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 322 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:29:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-27 23:29:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-27 23:29:37,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 97 states have (on average 1.577319587628866) internal successors, (153), 125 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2024-11-27 23:29:37,012 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 16 [2024-11-27 23:29:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:37,012 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2024-11-27 23:29:37,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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) [2024-11-27 23:29:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2024-11-27 23:29:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 23:29:37,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:37,013 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:37,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:37,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:37,214 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:37,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:37,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1112895927, now seen corresponding path program 1 times [2024-11-27 23:29:37,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:37,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146280200] [2024-11-27 23:29:37,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:37,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:37,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:37,219 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:37,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:29:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:37,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:29:37,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:37,357 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 [2024-11-27 23:29:37,595 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 [2024-11-27 23:29:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:37,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:37,649 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:37,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146280200] [2024-11-27 23:29:37,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146280200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:37,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:37,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:29:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520304498] [2024-11-27 23:29:37,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:37,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:29:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:37,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:29:37,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:29:37,651 INFO L87 Difference]: Start difference. First operand 126 states and 153 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) [2024-11-27 23:29:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:39,398 INFO L93 Difference]: Finished difference Result 188 states and 235 transitions. [2024-11-27 23:29:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:29:39,399 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 [2024-11-27 23:29:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:39,401 INFO L225 Difference]: With dead ends: 188 [2024-11-27 23:29:39,401 INFO L226 Difference]: Without dead ends: 188 [2024-11-27 23:29:39,401 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 [2024-11-27 23:29:39,402 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 89 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:39,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 268 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:29:39,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-27 23:29:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 157. [2024-11-27 23:29:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 128 states have (on average 1.671875) internal successors, (214), 156 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2024-11-27 23:29:39,409 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 16 [2024-11-27 23:29:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:39,409 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2024-11-27 23:29:39,409 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) [2024-11-27 23:29:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2024-11-27 23:29:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 23:29:39,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:39,412 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:39,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:39,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,613 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:39,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1112895928, now seen corresponding path program 1 times [2024-11-27 23:29:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:39,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420313397] [2024-11-27 23:29:39,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:39,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:39,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:39,616 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:39,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:29:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:39,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 23:29:39,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:39,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:39,777 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 [2024-11-27 23:29:39,785 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 [2024-11-27 23:29:40,172 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 [2024-11-27 23:29:40,177 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 [2024-11-27 23:29:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:40,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:40,269 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420313397] [2024-11-27 23:29:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420313397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:40,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:29:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926044952] [2024-11-27 23:29:40,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:40,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:29:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:40,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:29:40,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:29:40,271 INFO L87 Difference]: Start difference. First operand 157 states and 214 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) [2024-11-27 23:29:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:41,875 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2024-11-27 23:29:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:29:41,876 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 [2024-11-27 23:29:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:41,877 INFO L225 Difference]: With dead ends: 150 [2024-11-27 23:29:41,877 INFO L226 Difference]: Without dead ends: 150 [2024-11-27 23:29:41,877 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 [2024-11-27 23:29:41,877 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 42 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:41,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 357 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:29:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-27 23:29:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 138. [2024-11-27 23:29:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 109 states have (on average 1.5963302752293578) internal successors, (174), 137 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 174 transitions. [2024-11-27 23:29:41,883 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 174 transitions. Word has length 16 [2024-11-27 23:29:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:41,883 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 174 transitions. [2024-11-27 23:29:41,883 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) [2024-11-27 23:29:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 174 transitions. [2024-11-27 23:29:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:29:41,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:41,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:41,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:29:42,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:42,085 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:42,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1382348158, now seen corresponding path program 1 times [2024-11-27 23:29:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683806021] [2024-11-27 23:29:42,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:42,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:42,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:42,087 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:42,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:29:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:42,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:29:42,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:42,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:42,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683806021] [2024-11-27 23:29:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683806021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:42,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:42,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:29:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163188869] [2024-11-27 23:29:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:42,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:29:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:42,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:29:42,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:29:42,229 INFO L87 Difference]: Start difference. First operand 138 states and 174 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:42,691 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2024-11-27 23:29:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:29:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 23:29:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:42,693 INFO L225 Difference]: With dead ends: 144 [2024-11-27 23:29:42,693 INFO L226 Difference]: Without dead ends: 144 [2024-11-27 23:29:42,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:29:42,694 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 42 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:42,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 130 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:29:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-27 23:29:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 135. [2024-11-27 23:29:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 109 states have (on average 1.4954128440366972) internal successors, (163), 134 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) [2024-11-27 23:29:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 163 transitions. [2024-11-27 23:29:42,700 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 163 transitions. Word has length 20 [2024-11-27 23:29:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:42,700 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 163 transitions. [2024-11-27 23:29:42,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 163 transitions. [2024-11-27 23:29:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:29:42,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:42,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:42,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:42,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:42,902 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:42,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1382348159, now seen corresponding path program 1 times [2024-11-27 23:29:42,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:42,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073888038] [2024-11-27 23:29:42,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:42,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:42,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:42,904 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:42,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:29:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:43,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 23:29:43,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:43,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:29:43,077 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 [2024-11-27 23:29:43,088 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 [2024-11-27 23:29:43,509 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 [2024-11-27 23:29:43,518 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 [2024-11-27 23:29:43,655 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 [2024-11-27 23:29:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:43,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:43,728 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:43,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073888038] [2024-11-27 23:29:43,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073888038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:43,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:43,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 23:29:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973890897] [2024-11-27 23:29:43,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:43,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:29:43,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:43,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:29:43,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:29:43,729 INFO L87 Difference]: Start difference. First operand 135 states and 163 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) [2024-11-27 23:29:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:44,831 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2024-11-27 23:29:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:29:44,831 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 [2024-11-27 23:29:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:44,832 INFO L225 Difference]: With dead ends: 124 [2024-11-27 23:29:44,832 INFO L226 Difference]: Without dead ends: 124 [2024-11-27 23:29:44,832 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 [2024-11-27 23:29:44,834 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 8 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:44,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 342 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:29:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-27 23:29:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-27 23:29:44,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 123 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2024-11-27 23:29:44,839 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 20 [2024-11-27 23:29:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:44,839 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2024-11-27 23:29:44,839 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) [2024-11-27 23:29:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2024-11-27 23:29:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 23:29:44,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:44,840 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:44,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:29:45,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:45,046 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:45,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1382351295, now seen corresponding path program 1 times [2024-11-27 23:29:45,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:45,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131265259] [2024-11-27 23:29:45,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:45,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:45,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:45,048 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:45,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:29:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:45,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:29:45,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:45,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:45,321 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131265259] [2024-11-27 23:29:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131265259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:45,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:29:45,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843730722] [2024-11-27 23:29:45,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:45,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:29:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:45,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:29:45,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:29:45,323 INFO L87 Difference]: Start difference. First operand 124 states and 143 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) [2024-11-27 23:29:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:45,543 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2024-11-27 23:29:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:29:45,544 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 [2024-11-27 23:29:45,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:45,545 INFO L225 Difference]: With dead ends: 123 [2024-11-27 23:29:45,545 INFO L226 Difference]: Without dead ends: 123 [2024-11-27 23:29:45,545 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 [2024-11-27 23:29:45,549 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 56 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 251 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 [2024-11-27 23:29:45,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 251 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:29:45,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-27 23:29:45,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-27 23:29:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 122 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2024-11-27 23:29:45,557 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 20 [2024-11-27 23:29:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:45,557 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2024-11-27 23:29:45,557 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) [2024-11-27 23:29:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2024-11-27 23:29:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:29:45,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:45,558 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] [2024-11-27 23:29:45,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:45,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:45,758 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:45,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:45,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1474591047, now seen corresponding path program 1 times [2024-11-27 23:29:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:45,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422599025] [2024-11-27 23:29:45,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:45,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:45,761 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:45,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:29:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:45,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:29:45,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:46,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:46,141 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:46,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422599025] [2024-11-27 23:29:46,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422599025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:46,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:46,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:29:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64441830] [2024-11-27 23:29:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:46,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:29:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:46,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:29:46,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:29:46,142 INFO L87 Difference]: Start difference. First operand 123 states and 141 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) [2024-11-27 23:29:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:46,643 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2024-11-27 23:29:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:29:46,644 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 [2024-11-27 23:29:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:46,644 INFO L225 Difference]: With dead ends: 122 [2024-11-27 23:29:46,644 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 23:29:46,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:29:46,645 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 20 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:46,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 194 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:29:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 23:29:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-27 23:29:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.4285714285714286) internal successors, (140), 121 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) [2024-11-27 23:29:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2024-11-27 23:29:46,649 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 23 [2024-11-27 23:29:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:46,649 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2024-11-27 23:29:46,649 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) [2024-11-27 23:29:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2024-11-27 23:29:46,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:29:46,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:46,650 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] [2024-11-27 23:29:46,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:29:46,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:46,850 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:46,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:46,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1481168146, now seen corresponding path program 1 times [2024-11-27 23:29:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:46,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334789005] [2024-11-27 23:29:46,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:46,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:46,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:46,853 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:46,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:29:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:46,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:29:46,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:47,159 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 [2024-11-27 23:29:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:47,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:47,174 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334789005] [2024-11-27 23:29:47,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334789005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:47,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:47,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:29:47,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800233371] [2024-11-27 23:29:47,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:47,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:29:47,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:47,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:29:47,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-27 23:29:47,176 INFO L87 Difference]: Start difference. First operand 122 states and 140 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) [2024-11-27 23:29:47,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:47,781 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2024-11-27 23:29:47,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:29:47,781 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 [2024-11-27 23:29:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:47,782 INFO L225 Difference]: With dead ends: 126 [2024-11-27 23:29:47,782 INFO L226 Difference]: Without dead ends: 110 [2024-11-27 23:29:47,782 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 [2024-11-27 23:29:47,783 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 1 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:47,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 222 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 100 Unchecked, 0.6s Time] [2024-11-27 23:29:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-27 23:29:47,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-27 23:29:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 109 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) [2024-11-27 23:29:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2024-11-27 23:29:47,787 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 23 [2024-11-27 23:29:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:47,787 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2024-11-27 23:29:47,787 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) [2024-11-27 23:29:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2024-11-27 23:29:47,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-27 23:29:47,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:47,788 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] [2024-11-27 23:29:47,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 23:29:47,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:47,988 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:47,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1927707710, now seen corresponding path program 1 times [2024-11-27 23:29:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:47,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345755742] [2024-11-27 23:29:47,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:47,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:47,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:47,991 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:47,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:29:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:48,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:29:48,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:48,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:29:48,391 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345755742] [2024-11-27 23:29:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345755742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:29:48,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:29:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:29:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837332428] [2024-11-27 23:29:48,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:29:48,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:29:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:48,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:29:48,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:29:48,393 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:49,208 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2024-11-27 23:29:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:29:49,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 27 [2024-11-27 23:29:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:49,209 INFO L225 Difference]: With dead ends: 108 [2024-11-27 23:29:49,209 INFO L226 Difference]: Without dead ends: 108 [2024-11-27 23:29:49,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:29:49,210 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 53 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:49,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 192 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:29:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-27 23:29:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-27 23:29:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.430232558139535) internal successors, (123), 107 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2024-11-27 23:29:49,214 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 27 [2024-11-27 23:29:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:49,214 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2024-11-27 23:29:49,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2024-11-27 23:29:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:29:49,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:49,215 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] [2024-11-27 23:29:49,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-27 23:29:49,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:49,415 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:29:49,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash 370533679, now seen corresponding path program 1 times [2024-11-27 23:29:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:29:49,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82197634] [2024-11-27 23:29:49,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:49,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:49,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:49,418 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:49,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-27 23:29:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:49,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 23:29:49,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:49,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-27 23:29:49,632 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 [2024-11-27 23:29:49,647 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 [2024-11-27 23:29:49,750 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:29:49,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:29:49,802 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 [2024-11-27 23:29:49,816 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 [2024-11-27 23:29:49,946 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 [2024-11-27 23:29:49,963 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 [2024-11-27 23:29:50,147 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 [2024-11-27 23:29:50,349 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 [2024-11-27 23:29:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:50,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:50,648 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 [2024-11-27 23:29:51,328 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-27 23:29:51,329 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 [2024-11-27 23:29:51,349 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_710 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_create_~head~0#1.offset| (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_710) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))) (forall ((v_ArrVal_711 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_create_~head~0#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_711) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))))) is different from false [2024-11-27 23:29:55,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:29:55,695 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 [2024-11-27 23:29:55,703 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 [2024-11-27 23:29:55,712 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 [2024-11-27 23:29:55,722 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-27 23:29:55,722 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 [2024-11-27 23:29:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:59,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:29:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82197634] [2024-11-27 23:29:59,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82197634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:59,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:29:59,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2024-11-27 23:29:59,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003584727] [2024-11-27 23:29:59,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:59,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:29:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:29:59,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:29:59,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=440, Unknown=13, NotChecked=42, Total=552 [2024-11-27 23:29:59,815 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:03,454 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2024-11-27 23:30:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:30:03,455 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 24 states have internal predecessors, (50), 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 28 [2024-11-27 23:30:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:03,456 INFO L225 Difference]: With dead ends: 129 [2024-11-27 23:30:03,456 INFO L226 Difference]: Without dead ends: 129 [2024-11-27 23:30:03,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=144, Invalid=902, Unknown=14, NotChecked=62, Total=1122 [2024-11-27 23:30:03,457 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 68 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:03,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 659 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 712 Invalid, 0 Unknown, 68 Unchecked, 2.7s Time] [2024-11-27 23:30:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-27 23:30:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2024-11-27 23:30:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4081632653061225) internal successors, (138), 119 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2024-11-27 23:30:03,461 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 28 [2024-11-27 23:30:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:03,461 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2024-11-27 23:30:03,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 24 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2024-11-27 23:30:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:30:03,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:03,462 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] [2024-11-27 23:30:03,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-27 23:30:03,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:03,663 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:30:03,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:03,663 INFO L85 PathProgramCache]: Analyzing trace with hash 370533680, now seen corresponding path program 1 times [2024-11-27 23:30:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:30:03,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370697780] [2024-11-27 23:30:03,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:03,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:03,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:03,666 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:03,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-27 23:30:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:03,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 23:30:03,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:03,870 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 [2024-11-27 23:30:03,885 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 [2024-11-27 23:30:03,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:30:04,019 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:30:04,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:30:04,090 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 [2024-11-27 23:30:04,110 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 [2024-11-27 23:30:04,280 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 [2024-11-27 23:30:04,297 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 [2024-11-27 23:30:04,556 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 [2024-11-27 23:30:04,576 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 [2024-11-27 23:30:04,859 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 [2024-11-27 23:30:04,866 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 [2024-11-27 23:30:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:04,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:05,958 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 [2024-11-27 23:30:05,963 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 [2024-11-27 23:30:06,074 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 [2024-11-27 23:30:16,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:30:16,203 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 [2024-11-27 23:30:16,208 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 [2024-11-27 23:30:16,211 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 [2024-11-27 23:30:16,225 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-27 23:30:16,225 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 [2024-11-27 23:30:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:20,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:30:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370697780] [2024-11-27 23:30:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370697780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:30:20,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:30:20,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2024-11-27 23:30:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272222854] [2024-11-27 23:30:20,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:30:20,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 23:30:20,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:30:20,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 23:30:20,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=574, Unknown=6, NotChecked=0, Total=650 [2024-11-27 23:30:20,346 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand has 26 states, 25 states have (on average 2.2) internal successors, (55), 26 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:27,241 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2024-11-27 23:30:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:30:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 26 states have internal predecessors, (55), 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 28 [2024-11-27 23:30:27,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:27,242 INFO L225 Difference]: With dead ends: 129 [2024-11-27 23:30:27,242 INFO L226 Difference]: Without dead ends: 129 [2024-11-27 23:30:27,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=153, Invalid=1101, Unknown=6, NotChecked=0, Total=1260 [2024-11-27 23:30:27,243 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 72 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:27,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 643 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-27 23:30:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-27 23:30:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2024-11-27 23:30:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 119 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2024-11-27 23:30:27,252 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 28 [2024-11-27 23:30:27,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:27,252 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2024-11-27 23:30:27,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 26 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:30:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2024-11-27 23:30:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:30:27,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:27,253 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:27,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-27 23:30:27,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:27,454 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:30:27,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 8224425, now seen corresponding path program 1 times [2024-11-27 23:30:27,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:30:27,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970534232] [2024-11-27 23:30:27,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:27,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:30:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:27,457 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:30:27,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-27 23:30:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:27,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-27 23:30:27,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:30:27,722 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 [2024-11-27 23:30:27,732 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 [2024-11-27 23:30:27,865 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-27 23:30:27,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 23:30:27,939 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 16 treesize of output 11 [2024-11-27 23:30:27,967 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 [2024-11-27 23:30:28,135 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 [2024-11-27 23:30:28,387 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 [2024-11-27 23:30:28,507 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 [2024-11-27 23:30:28,667 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:30:28,667 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 [2024-11-27 23:30:28,750 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 [2024-11-27 23:30:28,987 INFO L349 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2024-11-27 23:30:28,987 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 [2024-11-27 23:30:29,115 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 [2024-11-27 23:30:29,275 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 35 treesize of output 19 [2024-11-27 23:30:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:29,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:30:31,492 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_876 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_880 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_877 (_ BitVec 64)) (|v_ULTIMATE.start_create_~ptr~0#1.base_22| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_22|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_22| (_ bv1 1)) (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_876))) (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_877))) |v_ULTIMATE.start_create_~ptr~0#1.base_22| v_ArrVal_880) |c_ULTIMATE.start_create_~head~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))))))) is different from false [2024-11-27 23:30:44,002 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_876 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_880 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_24| (_ BitVec 64)) (v_ArrVal_873 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_877 (_ BitVec 64)) (|v_ULTIMATE.start_create_~ptr~0#1.base_22| (_ BitVec 64)) (v_ArrVal_872 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_24| (_ bv1 1)))) (or (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_22|))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_22| (_ bv1 1)) (let ((.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (select (select (store (let ((.cse4 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_24| v_ArrVal_873) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse4 .cse3 |v_ULTIMATE.start_create_~ptr~0#1.base_24|)) |v_ULTIMATE.start_create_~ptr~0#1.base_24| v_ArrVal_876)) (.cse2 (select .cse4 .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_24| v_ArrVal_872) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3) v_ArrVal_877)))) |v_ULTIMATE.start_create_~ptr~0#1.base_22| v_ArrVal_880) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_24|)))))) is different from false [2024-11-27 23:30:44,855 INFO L349 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2024-11-27 23:30:44,856 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 5662 treesize of output 4449 [2024-11-27 23:30:44,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:30:44,966 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 345 treesize of output 316 [2024-11-27 23:30:45,012 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 460 treesize of output 430 [2024-11-27 23:30:45,083 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 257 treesize of output 249 [2024-11-27 23:30:45,112 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 504 treesize of output 488 [2024-11-27 23:30:45,139 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 488 treesize of output 456 [2024-11-27 23:30:45,362 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2024-11-27 23:30:45,362 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 673 treesize of output 663 [2024-11-27 23:30:45,400 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 364 treesize of output 328 [2024-11-27 23:31:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-27 23:31:02,298 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:31:02,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970534232] [2024-11-27 23:31:02,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970534232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:02,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:31:02,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2024-11-27 23:31:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867716939] [2024-11-27 23:31:02,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:02,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 23:31:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:31:02,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 23:31:02,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=874, Unknown=31, NotChecked=126, Total=1190 [2024-11-27 23:31:02,301 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:12,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:31:18,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:31:22,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:31:28,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:31:32,665 WARN L539 Checker$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] [2024-11-27 23:31:52,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:31:56,558 WARN L539 Checker$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] [2024-11-27 23:32:00,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:32:04,807 WARN L539 Checker$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] [2024-11-27 23:32:24,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:32:26,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:32:30,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-27 23:32:32,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:32:50,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:33:05,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:33:20,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:33:24,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:33:49,352 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] [2024-11-27 23:33:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:55,118 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2024-11-27 23:33:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 23:33:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 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 [2024-11-27 23:33:55,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:55,119 INFO L225 Difference]: With dead ends: 144 [2024-11-27 23:33:55,119 INFO L226 Difference]: Without dead ends: 144 [2024-11-27 23:33:55,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 123.9s TimeCoverageRelationStatistics Valid=381, Invalid=1914, Unknown=65, NotChecked=190, Total=2550 [2024-11-27 23:33:55,121 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 63 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 10 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 78.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:55,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 891 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 874 Invalid, 41 Unknown, 170 Unchecked, 78.9s Time] [2024-11-27 23:33:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-27 23:33:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2024-11-27 23:33:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.3416666666666666) internal successors, (161), 141 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:55,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 161 transitions. [2024-11-27 23:33:55,125 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 161 transitions. Word has length 29 [2024-11-27 23:33:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:55,125 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 161 transitions. [2024-11-27 23:33:55,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:33:55,126 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 161 transitions. [2024-11-27 23:33:55,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:33:55,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:55,127 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:55,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-27 23:33:55,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:55,327 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:33:55,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash 8224426, now seen corresponding path program 1 times [2024-11-27 23:33:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:33:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588152992] [2024-11-27 23:33:55,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:55,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:33:55,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:33:55,330 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:33:55,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-27 23:33:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:55,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 23:33:55,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:33:55,626 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 [2024-11-27 23:33:55,657 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 [2024-11-27 23:33:55,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:33:55,975 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-27 23:33:55,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-27 23:33:56,138 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 [2024-11-27 23:33:56,160 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 [2024-11-27 23:33:57,418 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 [2024-11-27 23:33:57,462 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 [2024-11-27 23:33:57,734 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 [2024-11-27 23:33:57,759 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 [2024-11-27 23:33:57,865 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-27 23:33:57,865 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 [2024-11-27 23:33:57,900 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 [2024-11-27 23:33:58,190 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 [2024-11-27 23:33:58,220 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 [2024-11-27 23:33:58,824 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-27 23:33:58,825 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 [2024-11-27 23:33:58,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-27 23:33:59,079 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 [2024-11-27 23:33:59,112 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 [2024-11-27 23:33:59,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:33:59,502 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 [2024-11-27 23:33:59,510 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 [2024-11-27 23:33:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:33:59,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:34:01,301 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_989) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0)))) (forall ((v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv8 64) .cse1)))))) is different from false [2024-11-27 23:34:12,550 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (bvadd (_ bv8 64) |c_ULTIMATE.start___list_add_~next#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start___list_add_~next#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start___list_add_~next#1.base|) .cse6 |c_ULTIMATE.start___list_add_~new#1.offset|))) (.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse1 (store .cse2 |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_983))) (store .cse1 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse1 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| |c_ULTIMATE.start___list_add_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_987 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))) (forall ((v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_988 (_ BitVec 64))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse4 (store .cse2 |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_983))) (store .cse4 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse4 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| |c_ULTIMATE.start___list_add_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_988) (select (select (store (let ((.cse5 (store (store |c_#memory_$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|) .cse6 |c_ULTIMATE.start___list_add_~new#1.base|)) |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_984))) (store .cse5 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse5 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| v_ArrVal_987))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_989) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3))))))))) is different from false [2024-11-27 23:34:13,404 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_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_990 (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_983))) (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_26| v_ArrVal_990) |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_26|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_987 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))) (forall ((v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_988 (_ BitVec 64))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse4 (store .cse2 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_983))) (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_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_988) (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_984))) (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_987))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_989) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3))))))))) is different from false [2024-11-27 23:34:14,298 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$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store .cse10 .cse9 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) (.cse2 (select .cse8 .cse9)) (.cse3 (select .cse10 .cse9)) (.cse5 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse1 (store .cse4 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_983))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse5))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_987 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))) (forall ((v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_988 (_ BitVec 64))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse6 (store .cse4 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_983))) (store .cse6 .cse2 (store (select .cse6 .cse2) .cse3 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse5)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_988) (select (select (store (let ((.cse7 (store (store |c_#memory_$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_984))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse3 v_ArrVal_987))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_989) |c_ULTIMATE.start_create_~head~0#1.base|) .cse5))))))))) is different from false [2024-11-27 23:34:15,042 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$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse10 .cse6 .cse4))) (.cse2 (select .cse9 .cse6)) (.cse3 (select .cse10 .cse6))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64)))) (or (forall ((v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse1 (store .cse5 |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_983))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 .cse4))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse6))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_26| (_ BitVec 64)) (v_ArrVal_984 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_983 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_987 (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_26|))) (forall ((v_ArrVal_989 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_990 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_988 (_ BitVec 64))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse7 (store .cse5 |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_983))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse3 .cse4))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_990) |c_ULTIMATE.start_create_~head~0#1.base|) .cse6)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_988) (select (select (store (let ((.cse8 (store (store |c_#memory_$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_984))) (store .cse8 .cse2 (store (select .cse8 .cse2) .cse3 v_ArrVal_987))) |v_ULTIMATE.start_create_~ptr~0#1.base_26| v_ArrVal_989) |c_ULTIMATE.start_create_~head~0#1.base|) .cse6))))))))) is different from false [2024-11-27 23:34:19,663 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 [2024-11-27 23:34:44,783 INFO L349 Elim1Store]: treesize reduction 53, result has 62.4 percent of original size [2024-11-27 23:34:44,784 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 13656 treesize of output 11151 [2024-11-27 23:34:45,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:34:45,133 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 764 treesize of output 744 [2024-11-27 23:34:45,165 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 463 treesize of output 431 [2024-11-27 23:34:45,189 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 377 treesize of output 373 [2024-11-27 23:34:45,212 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 [2024-11-27 23:34:45,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:34:45,289 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 [2024-11-27 23:34:45,307 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 [2024-11-27 23:34:45,342 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 [2024-11-27 23:34:46,408 INFO L349 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2024-11-27 23:34:46,409 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 5015 treesize of output 3694 [2024-11-27 23:34:47,252 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2024-11-27 23:34:47,253 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 [2024-11-27 23:34:47,729 INFO L349 Elim1Store]: treesize reduction 23, result has 65.2 percent of original size [2024-11-27 23:34:47,730 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 4658 treesize of output 4176 [2024-11-27 23:34:47,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:34:47,898 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 [2024-11-27 23:34:47,951 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 356 [2024-11-27 23:34:47,996 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 213 treesize of output 201 [2024-11-27 23:34:48,043 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 201 treesize of output 181 [2024-11-27 23:34:48,070 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 431 treesize of output 359 [2024-11-27 23:34:48,121 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 [2024-11-27 23:34:48,153 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 [2024-11-27 23:34:49,318 INFO L349 Elim1Store]: treesize reduction 53, result has 62.4 percent of original size [2024-11-27 23:34:49,319 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 2710 treesize of output 2473 [2024-11-27 23:34:49,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:34:49,490 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 [2024-11-27 23:34:49,535 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 [2024-11-27 23:34:49,559 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 [2024-11-27 23:34:49,582 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 [2024-11-27 23:34:49,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:34:49,619 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 [2024-11-27 23:34:49,637 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 [2024-11-27 23:34:49,670 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 [2024-11-27 23:34:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 3 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-27 23:34:51,312 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:34:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588152992] [2024-11-27 23:34:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588152992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:34:51,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:34:51,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2024-11-27 23:34:51,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896417947] [2024-11-27 23:34:51,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:34:51,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 23:34:51,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:34:51,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 23:34:51,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=624, Unknown=22, NotChecked=280, Total=1056 [2024-11-27 23:34:51,314 INFO L87 Difference]: Start difference. First operand 142 states and 161 transitions. Second operand has 33 states, 32 states have (on average 1.78125) internal successors, (57), 33 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:53,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:20,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:21,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:23,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:48,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:52,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:53,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:35:55,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:36:14,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:36:31,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:36:51,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:36:57,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:36:59,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:03,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:19,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:23,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:26,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:30,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:33,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:35,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:37,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:37:58,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:01,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:05,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:09,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:14,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:29,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:31,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:32,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:34,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:52,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:38:53,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:39:18,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:39:23,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:39:40,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:39:44,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:39:48,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:39:55,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:01,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:02,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:04,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:08,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:12,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:16,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:24,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:28,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-27 23:40:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:28,108 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2024-11-27 23:40:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:40:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.78125) internal successors, (57), 33 states have internal predecessors, (57), 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 [2024-11-27 23:40:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:28,116 INFO L225 Difference]: With dead ends: 143 [2024-11-27 23:40:28,116 INFO L226 Difference]: Without dead ends: 143 [2024-11-27 23:40:28,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 204.0s TimeCoverageRelationStatistics Valid=396, Invalid=1918, Unknown=58, NotChecked=490, Total=2862 [2024-11-27 23:40:28,117 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 100 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 23 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 172.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:28,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 761 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 660 Invalid, 26 Unknown, 452 Unchecked, 172.4s Time] [2024-11-27 23:40:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-27 23:40:28,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2024-11-27 23:40:28,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.325) internal successors, (159), 141 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) [2024-11-27 23:40:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2024-11-27 23:40:28,122 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 29 [2024-11-27 23:40:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:28,124 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 159 transitions. [2024-11-27 23:40:28,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.78125) internal successors, (57), 33 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 159 transitions. [2024-11-27 23:40:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-27 23:40:28,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:28,125 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] [2024-11-27 23:40:28,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-27 23:40:28,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:28,327 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-27 23:40:28,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:28,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2015858392, now seen corresponding path program 1 times [2024-11-27 23:40:28,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:40:28,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131615124] [2024-11-27 23:40:28,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:40:28,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:28,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:28,331 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:28,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a166e-742e-48ed-a876-c7b076b9fbc3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-27 23:40:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:28,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-27 23:40:28,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:29,150 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 [2024-11-27 23:40:29,326 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 [2024-11-27 23:40:30,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 23:40:31,002 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-27 23:40:31,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-27 23:40:31,835 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 [2024-11-27 23:40:31,966 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 [2024-11-27 23:40:33,717 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 [2024-11-27 23:40:33,899 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 [2024-11-27 23:40:37,034 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 [2024-11-27 23:40:38,451 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 11 [2024-11-27 23:40:38,601 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 [2024-11-27 23:40:38,829 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 27 treesize of output 15 [2024-11-27 23:40:43,631 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 [2024-11-27 23:40:47,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:40:47,033 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2024-11-27 23:40:47,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-27 23:40:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:40:48,777 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:57,260 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 184 treesize of output 168 [2024-11-27 23:41:10,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:41:10,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 23:41:11,759 INFO L224 Elim1Store]: Index analysis took 232 ms [2024-11-27 23:41:25,812 WARN L286 SmtUtils]: Spent 13.92s on a formula simplification. DAG size of input: 139 DAG size of output: 103 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-27 23:41:25,812 INFO L349 Elim1Store]: treesize reduction 132, result has 62.2 percent of original size [2024-11-27 23:41:25,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 7958 treesize of output 7686