./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:42:52,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:42:52,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 00:42:52,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:42:52,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:42:52,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:42:52,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:42:52,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:42:52,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:42:52,558 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:42:52,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:42:52,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:42:52,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:42:52,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:42:52,559 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:42:52,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:42:52,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:42:52,561 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:42:52,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:42:52,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:42:52,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:42:52,562 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2025-03-09 00:42:52,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:42:52,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:42:52,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:42:52,798 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:42:52,798 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:42:52,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2025-03-09 00:42:53,945 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a850eb100/25a1603d14534f28b0fb7a2933c4417c/FLAG81bcb55fc [2025-03-09 00:42:54,300 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:42:54,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2025-03-09 00:42:54,319 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a850eb100/25a1603d14534f28b0fb7a2933c4417c/FLAG81bcb55fc [2025-03-09 00:42:54,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a850eb100/25a1603d14534f28b0fb7a2933c4417c [2025-03-09 00:42:54,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:42:54,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:42:54,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:42:54,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:42:54,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:42:54,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:42:54" (1/1) ... [2025-03-09 00:42:54,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40eb77c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:54, skipping insertion in model container [2025-03-09 00:42:54,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:42:54" (1/1) ... [2025-03-09 00:42:54,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:42:54,874 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,903 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,907 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,909 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,913 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,922 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,922 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,924 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,926 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,926 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,927 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,929 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:54,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:42:54,942 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) [2025-03-09 00:42:54,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39cb4e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:54, skipping insertion in model container [2025-03-09 00:42:54,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:42:54,943 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-09 00:42:54,944 INFO L158 Benchmark]: Toolchain (without parser) took 405.03ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 93.0MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:42:54,945 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 00:42:54,945 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.25ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 93.5MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 00:42:54,945 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.25ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 93.5MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 00:42:56,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 00:42:56,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-09 00:42:56,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 00:42:56,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 00:42:56,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 00:42:56,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 00:42:56,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 00:42:56,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 00:42:56,795 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 00:42:56,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 00:42:56,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 00:42:56,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 00:42:56,796 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 00:42:56,796 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 00:42:56,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 00:42:56,796 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 00:42:56,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 00:42:56,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 00:42:56,797 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 00:42:56,798 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 00:42:56,798 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 00:42:56,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 00:42:56,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 00:42:56,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 00:42:56,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:42:56,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 00:42:56,799 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2025-03-09 00:42:57,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 00:42:57,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 00:42:57,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 00:42:57,050 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 00:42:57,050 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 00:42:57,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2025-03-09 00:42:58,264 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9222d29/6685fda0e38f4cbc97bdc5f4e2417b08/FLAG1ca8b9996 [2025-03-09 00:42:58,474 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 00:42:58,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2025-03-09 00:42:58,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9222d29/6685fda0e38f4cbc97bdc5f4e2417b08/FLAG1ca8b9996 [2025-03-09 00:42:58,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe9222d29/6685fda0e38f4cbc97bdc5f4e2417b08 [2025-03-09 00:42:58,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 00:42:58,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 00:42:58,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 00:42:58,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 00:42:58,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 00:42:58,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:42:58" (1/1) ... [2025-03-09 00:42:58,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628fdf77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:58, skipping insertion in model container [2025-03-09 00:42:58,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 12:42:58" (1/1) ... [2025-03-09 00:42:58,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:42:58,834 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,864 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,870 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,873 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,876 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,889 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,890 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,891 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,892 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,893 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,893 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,896 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:42:58,913 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-09 00:42:58,921 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 00:42:58,952 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,971 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,974 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,978 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,985 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,995 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:58,999 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:59,003 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:59,005 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:59,006 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:59,006 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:59,008 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-09 00:42:59,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:42:59,018 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 00:42:59,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 00:42:59,120 INFO L204 MainTranslator]: Completed translation [2025-03-09 00:42:59,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59 WrapperNode [2025-03-09 00:42:59,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 00:42:59,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 00:42:59,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 00:42:59,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 00:42:59,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,171 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 774 [2025-03-09 00:42:59,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 00:42:59,172 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 00:42:59,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 00:42:59,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 00:42:59,178 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,249 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-03-09 00:42:59,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,271 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 00:42:59,290 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 00:42:59,290 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 00:42:59,290 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 00:42:59,292 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (1/1) ... [2025-03-09 00:42:59,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 00:42:59,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:42:59,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 00:42:59,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 00:42:59,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-09 00:42:59,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-09 00:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-09 00:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-09 00:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-09 00:42:59,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-09 00:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-09 00:42:59,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-09 00:42:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-09 00:42:59,334 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-09 00:42:59,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-09 00:42:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-09 00:42:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-09 00:42:59,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 00:42:59,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 00:42:59,473 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 00:42:59,474 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 00:43:01,577 INFO L? ?]: Removed 904 outVars from TransFormulas that were not future-live. [2025-03-09 00:43:01,577 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 00:43:01,593 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 00:43:01,599 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 00:43:01,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:43:01 BoogieIcfgContainer [2025-03-09 00:43:01,599 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 00:43:01,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 00:43:01,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 00:43:01,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 00:43:01,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 12:42:58" (1/3) ... [2025-03-09 00:43:01,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:43:01, skipping insertion in model container [2025-03-09 00:43:01,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 12:42:59" (2/3) ... [2025-03-09 00:43:01,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9c692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 12:43:01, skipping insertion in model container [2025-03-09 00:43:01,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 12:43:01" (3/3) ... [2025-03-09 00:43:01,605 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2025-03-09 00:43:01,614 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 00:43:01,615 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test1-2.i that has 4 procedures, 856 locations, 1 initial locations, 24 loop locations, and 425 error locations. [2025-03-09 00:43:01,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 00:43:01,659 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;@7ca28c21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 00:43:01,659 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-03-09 00:43:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 413 states have (on average 2.234866828087167) internal successors, (923), 845 states have internal predecessors, (923), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:43:01,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:01,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:43:01,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:01,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash 943127406, now seen corresponding path program 1 times [2025-03-09 00:43:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:01,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127506506] [2025-03-09 00:43:01,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:01,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:01,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:01,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:01,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 00:43:01,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:43:01,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:43:01,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:01,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:01,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 00:43:01,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:01,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:01,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:01,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127506506] [2025-03-09 00:43:01,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127506506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:01,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:01,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375024165] [2025-03-09 00:43:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:01,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:01,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:01,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:01,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:01,872 INFO L87 Difference]: Start difference. First operand has 851 states, 413 states have (on average 2.234866828087167) internal successors, (923), 845 states have internal predecessors, (923), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:02,524 INFO L93 Difference]: Finished difference Result 1148 states and 1248 transitions. [2025-03-09 00:43:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-03-09 00:43:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:02,541 INFO L225 Difference]: With dead ends: 1148 [2025-03-09 00:43:02,542 INFO L226 Difference]: Without dead ends: 1146 [2025-03-09 00:43:02,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:02,545 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 328 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:02,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 2586 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-09 00:43:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2025-03-09 00:43:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 921. [2025-03-09 00:43:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 489 states have (on average 2.087934560327198) internal successors, (1021), 915 states have internal predecessors, (1021), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1047 transitions. [2025-03-09 00:43:02,620 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1047 transitions. Word has length 5 [2025-03-09 00:43:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:02,623 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1047 transitions. [2025-03-09 00:43:02,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1047 transitions. [2025-03-09 00:43:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:43:02,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:02,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:43:02,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 00:43:02,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:02,828 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:02,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 943775834, now seen corresponding path program 1 times [2025-03-09 00:43:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:02,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776927363] [2025-03-09 00:43:02,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:02,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:02,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:02,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:02,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 00:43:02,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:43:02,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:43:02,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:02,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:02,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:02,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:02,921 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 [2025-03-09 00:43:02,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:02,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:02,932 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:02,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776927363] [2025-03-09 00:43:02,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776927363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:02,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:02,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:02,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294123872] [2025-03-09 00:43:02,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:02,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:02,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:02,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:02,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:02,934 INFO L87 Difference]: Start difference. First operand 921 states and 1047 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:03,806 INFO L93 Difference]: Finished difference Result 872 states and 993 transitions. [2025-03-09 00:43:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-03-09 00:43:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:03,809 INFO L225 Difference]: With dead ends: 872 [2025-03-09 00:43:03,810 INFO L226 Difference]: Without dead ends: 872 [2025-03-09 00:43:03,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:03,810 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 531 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:03,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 650 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-09 00:43:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2025-03-09 00:43:03,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2025-03-09 00:43:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 489 states have (on average 1.9775051124744376) internal successors, (967), 866 states have internal predecessors, (967), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 993 transitions. [2025-03-09 00:43:03,834 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 993 transitions. Word has length 5 [2025-03-09 00:43:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:03,834 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 993 transitions. [2025-03-09 00:43:03,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 993 transitions. [2025-03-09 00:43:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-09 00:43:03,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:03,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 00:43:03,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 00:43:04,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:04,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:04,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash 943775835, now seen corresponding path program 1 times [2025-03-09 00:43:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629220596] [2025-03-09 00:43:04,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:04,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:04,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:04,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 00:43:04,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 00:43:04,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 00:43:04,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:04,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:04,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:43:04,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:04,130 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 [2025-03-09 00:43:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:04,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:04,144 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:04,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629220596] [2025-03-09 00:43:04,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629220596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:04,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:04,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:04,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788021992] [2025-03-09 00:43:04,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:04,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:04,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:04,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:04,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:04,146 INFO L87 Difference]: Start difference. First operand 872 states and 993 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:05,143 INFO L93 Difference]: Finished difference Result 946 states and 1066 transitions. [2025-03-09 00:43:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-03-09 00:43:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:05,148 INFO L225 Difference]: With dead ends: 946 [2025-03-09 00:43:05,148 INFO L226 Difference]: Without dead ends: 946 [2025-03-09 00:43:05,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:05,149 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 260 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:05,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1125 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:43:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2025-03-09 00:43:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 899. [2025-03-09 00:43:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 526 states have (on average 1.950570342205323) internal successors, (1026), 893 states have internal predecessors, (1026), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1052 transitions. [2025-03-09 00:43:05,170 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1052 transitions. Word has length 5 [2025-03-09 00:43:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:05,173 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1052 transitions. [2025-03-09 00:43:05,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1052 transitions. [2025-03-09 00:43:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-09 00:43:05,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:05,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:05,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 00:43:05,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:05,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:05,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1035921072, now seen corresponding path program 1 times [2025-03-09 00:43:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:05,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141272999] [2025-03-09 00:43:05,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:05,377 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:05,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 00:43:05,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 00:43:05,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 00:43:05,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:05,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:05,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 00:43:05,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:05,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:05,464 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:05,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141272999] [2025-03-09 00:43:05,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141272999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:05,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:05,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 00:43:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968816049] [2025-03-09 00:43:05,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:05,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 00:43:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:05,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 00:43:05,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:05,465 INFO L87 Difference]: Start difference. First operand 899 states and 1052 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:06,131 INFO L93 Difference]: Finished difference Result 900 states and 1052 transitions. [2025-03-09 00:43:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 00:43:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-03-09 00:43:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:06,133 INFO L225 Difference]: With dead ends: 900 [2025-03-09 00:43:06,134 INFO L226 Difference]: Without dead ends: 895 [2025-03-09 00:43:06,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 00:43:06,134 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:06,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1303 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-09 00:43:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-03-09 00:43:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2025-03-09 00:43:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 522 states have (on average 1.9559386973180077) internal successors, (1021), 889 states have internal predecessors, (1021), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:06,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1047 transitions. [2025-03-09 00:43:06,150 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1047 transitions. Word has length 8 [2025-03-09 00:43:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:06,150 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1047 transitions. [2025-03-09 00:43:06,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1047 transitions. [2025-03-09 00:43:06,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:43:06,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:06,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:06,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 00:43:06,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:06,351 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -81503881, now seen corresponding path program 1 times [2025-03-09 00:43:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596989831] [2025-03-09 00:43:06,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:06,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:06,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:06,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 00:43:06,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:43:06,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:43:06,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:06,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:06,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:43:06,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:06,452 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 [2025-03-09 00:43:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:06,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:06,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:06,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596989831] [2025-03-09 00:43:06,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596989831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:06,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:06,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868690196] [2025-03-09 00:43:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:06,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:06,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:06,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:06,483 INFO L87 Difference]: Start difference. First operand 895 states and 1047 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:07,726 INFO L93 Difference]: Finished difference Result 880 states and 1009 transitions. [2025-03-09 00:43:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:07,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:43:07,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:07,736 INFO L225 Difference]: With dead ends: 880 [2025-03-09 00:43:07,736 INFO L226 Difference]: Without dead ends: 880 [2025-03-09 00:43:07,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:07,739 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 582 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:07,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 950 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-09 00:43:07,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2025-03-09 00:43:07,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 872. [2025-03-09 00:43:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 522 states have (on average 1.867816091954023) internal successors, (975), 866 states have internal predecessors, (975), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1001 transitions. [2025-03-09 00:43:07,754 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1001 transitions. Word has length 10 [2025-03-09 00:43:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:07,754 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1001 transitions. [2025-03-09 00:43:07,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1001 transitions. [2025-03-09 00:43:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-09 00:43:07,755 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:07,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:07,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 00:43:07,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:07,955 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:07,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:07,956 INFO L85 PathProgramCache]: Analyzing trace with hash -81503880, now seen corresponding path program 1 times [2025-03-09 00:43:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:07,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144940530] [2025-03-09 00:43:07,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:07,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:07,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:07,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 00:43:08,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 00:43:08,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 00:43:08,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:08,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:08,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 00:43:08,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:08,087 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 [2025-03-09 00:43:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:08,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:08,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144940530] [2025-03-09 00:43:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144940530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 00:43:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059332597] [2025-03-09 00:43:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:08,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:08,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:08,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:08,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:08,136 INFO L87 Difference]: Start difference. First operand 872 states and 1001 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:09,610 INFO L93 Difference]: Finished difference Result 1049 states and 1169 transitions. [2025-03-09 00:43:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-09 00:43:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:09,613 INFO L225 Difference]: With dead ends: 1049 [2025-03-09 00:43:09,613 INFO L226 Difference]: Without dead ends: 1049 [2025-03-09 00:43:09,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:09,614 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 384 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:09,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1557 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:43:09,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2025-03-09 00:43:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 986. [2025-03-09 00:43:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 636 states have (on average 1.75) internal successors, (1113), 980 states have internal predecessors, (1113), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1139 transitions. [2025-03-09 00:43:09,629 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1139 transitions. Word has length 10 [2025-03-09 00:43:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:09,629 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1139 transitions. [2025-03-09 00:43:09,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1139 transitions. [2025-03-09 00:43:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-09 00:43:09,630 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:09,630 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:09,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 00:43:09,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:09,835 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:09,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 786870366, now seen corresponding path program 1 times [2025-03-09 00:43:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68882499] [2025-03-09 00:43:09,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:09,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:09,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:09,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:09,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 00:43:09,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-09 00:43:09,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-09 00:43:09,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:09,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:09,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:43:09,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:09,982 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 [2025-03-09 00:43:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:10,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:10,440 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:10,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68882499] [2025-03-09 00:43:10,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68882499] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:43:10,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:43:10,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-09 00:43:10,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030627470] [2025-03-09 00:43:10,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:43:10,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:43:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:10,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:43:10,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:43:10,442 INFO L87 Difference]: Start difference. First operand 986 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:14,518 INFO L93 Difference]: Finished difference Result 1405 states and 1659 transitions. [2025-03-09 00:43:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:43:14,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 [2025-03-09 00:43:14,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:14,523 INFO L225 Difference]: With dead ends: 1405 [2025-03-09 00:43:14,523 INFO L226 Difference]: Without dead ends: 1405 [2025-03-09 00:43:14,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-09 00:43:14,525 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 1504 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:14,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2538 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-09 00:43:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2025-03-09 00:43:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1150. [2025-03-09 00:43:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 800 states have (on average 1.68125) internal successors, (1345), 1144 states have internal predecessors, (1345), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1371 transitions. [2025-03-09 00:43:14,557 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1371 transitions. Word has length 29 [2025-03-09 00:43:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:14,558 INFO L471 AbstractCegarLoop]: Abstraction has 1150 states and 1371 transitions. [2025-03-09 00:43:14,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1371 transitions. [2025-03-09 00:43:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-09 00:43:14,559 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:14,560 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:14,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 00:43:14,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:14,760 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:14,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1556394879, now seen corresponding path program 1 times [2025-03-09 00:43:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623394702] [2025-03-09 00:43:14,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:14,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:14,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:14,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:14,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 00:43:14,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 00:43:14,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 00:43:14,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:14,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:14,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:14,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:14,924 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:14,924 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623394702] [2025-03-09 00:43:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623394702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:14,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806448688] [2025-03-09 00:43:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:14,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:14,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:14,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:14,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:14,924 INFO L87 Difference]: Start difference. First operand 1150 states and 1371 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:14,975 INFO L93 Difference]: Finished difference Result 839 states and 935 transitions. [2025-03-09 00:43:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:43:14,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2025-03-09 00:43:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:14,981 INFO L225 Difference]: With dead ends: 839 [2025-03-09 00:43:14,981 INFO L226 Difference]: Without dead ends: 839 [2025-03-09 00:43:14,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:14,981 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 56 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:14,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2186 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:43:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2025-03-09 00:43:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2025-03-09 00:43:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 510 states have (on average 1.7784313725490195) internal successors, (907), 831 states have internal predecessors, (907), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 933 transitions. [2025-03-09 00:43:14,992 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 933 transitions. Word has length 44 [2025-03-09 00:43:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:14,992 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 933 transitions. [2025-03-09 00:43:14,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 933 transitions. [2025-03-09 00:43:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-09 00:43:14,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:14,994 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:15,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 00:43:15,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:15,195 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:15,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 591851959, now seen corresponding path program 1 times [2025-03-09 00:43:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764543800] [2025-03-09 00:43:15,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:15,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:15,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:15,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 00:43:15,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-09 00:43:15,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-09 00:43:15,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:15,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:15,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 00:43:15,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:15,357 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 [2025-03-09 00:43:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-09 00:43:15,688 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 [2025-03-09 00:43:15,704 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:43:15,705 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 [2025-03-09 00:43:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:15,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:15,710 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764543800] [2025-03-09 00:43:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764543800] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:15,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515090663] [2025-03-09 00:43:15,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:15,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:43:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:15,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:43:15,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:15,712 INFO L87 Difference]: Start difference. First operand 837 states and 933 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:16,877 INFO L93 Difference]: Finished difference Result 799 states and 895 transitions. [2025-03-09 00:43:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 00:43:16,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2025-03-09 00:43:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:16,880 INFO L225 Difference]: With dead ends: 799 [2025-03-09 00:43:16,880 INFO L226 Difference]: Without dead ends: 799 [2025-03-09 00:43:16,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:43:16,880 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 447 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:16,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 784 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-09 00:43:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-09 00:43:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 762. [2025-03-09 00:43:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 473 states have (on average 1.6807610993657505) internal successors, (795), 756 states have internal predecessors, (795), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 821 transitions. [2025-03-09 00:43:16,897 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 821 transitions. Word has length 52 [2025-03-09 00:43:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:16,897 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 821 transitions. [2025-03-09 00:43:16,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 00:43:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 821 transitions. [2025-03-09 00:43:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 00:43:16,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:16,900 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:16,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-09 00:43:17,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:17,101 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:17,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1753738290, now seen corresponding path program 1 times [2025-03-09 00:43:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:17,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839801506] [2025-03-09 00:43:17,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:17,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:17,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:17,104 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:17,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 00:43:17,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 00:43:17,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 00:43:17,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:17,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:17,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:43:17,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:17,274 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 [2025-03-09 00:43:17,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:43:17,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:43:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:17,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:17,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:17,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839801506] [2025-03-09 00:43:17,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839801506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:17,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:17,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:17,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638765958] [2025-03-09 00:43:17,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:17,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:43:17,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:17,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:43:17,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:17,310 INFO L87 Difference]: Start difference. First operand 762 states and 821 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 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) [2025-03-09 00:43:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:18,319 INFO L93 Difference]: Finished difference Result 761 states and 820 transitions. [2025-03-09 00:43:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:43:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 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 57 [2025-03-09 00:43:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:18,321 INFO L225 Difference]: With dead ends: 761 [2025-03-09 00:43:18,321 INFO L226 Difference]: Without dead ends: 761 [2025-03-09 00:43:18,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:43:18,322 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 2 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:18,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1879 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-09 00:43:18,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-03-09 00:43:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2025-03-09 00:43:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 473 states have (on average 1.6786469344608879) internal successors, (794), 755 states have internal predecessors, (794), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 820 transitions. [2025-03-09 00:43:18,333 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 820 transitions. Word has length 57 [2025-03-09 00:43:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:18,334 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 820 transitions. [2025-03-09 00:43:18,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 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) [2025-03-09 00:43:18,334 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 820 transitions. [2025-03-09 00:43:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-09 00:43:18,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:18,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:18,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 00:43:18,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:18,535 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:18,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:18,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1753738289, now seen corresponding path program 1 times [2025-03-09 00:43:18,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:18,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270040797] [2025-03-09 00:43:18,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:18,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:18,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:18,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:18,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 00:43:18,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-09 00:43:18,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-09 00:43:18,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:18,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:18,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 00:43:18,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:18,699 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 [2025-03-09 00:43:18,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:43:18,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:43:18,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-09 00:43:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:18,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:18,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270040797] [2025-03-09 00:43:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270040797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934087064] [2025-03-09 00:43:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:18,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 00:43:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:18,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 00:43:18,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 00:43:18,766 INFO L87 Difference]: Start difference. First operand 761 states and 820 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 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) [2025-03-09 00:43:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:20,233 INFO L93 Difference]: Finished difference Result 760 states and 819 transitions. [2025-03-09 00:43:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 00:43:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 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 57 [2025-03-09 00:43:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:20,236 INFO L225 Difference]: With dead ends: 760 [2025-03-09 00:43:20,236 INFO L226 Difference]: Without dead ends: 760 [2025-03-09 00:43:20,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-09 00:43:20,236 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 1 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:20,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1902 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-09 00:43:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2025-03-09 00:43:20,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2025-03-09 00:43:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 472 states have (on average 1.680084745762712) internal successors, (793), 754 states have internal predecessors, (793), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-09 00:43:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 819 transitions. [2025-03-09 00:43:20,248 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 819 transitions. Word has length 57 [2025-03-09 00:43:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:20,249 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 819 transitions. [2025-03-09 00:43:20,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 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) [2025-03-09 00:43:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 819 transitions. [2025-03-09 00:43:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:43:20,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:20,250 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:20,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-09 00:43:20,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:20,451 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:20,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash -776460821, now seen corresponding path program 1 times [2025-03-09 00:43:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:20,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458035058] [2025-03-09 00:43:20,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:20,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:20,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:20,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:20,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 00:43:20,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:43:20,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:43:20,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:20,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:20,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 00:43:20,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:20,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:43:20,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-09 00:43:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:20,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:20,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458035058] [2025-03-09 00:43:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458035058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 00:43:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957992209] [2025-03-09 00:43:20,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:20,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 00:43:20,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:20,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 00:43:20,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 00:43:20,702 INFO L87 Difference]: Start difference. First operand 760 states and 819 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:43:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:22,030 INFO L93 Difference]: Finished difference Result 772 states and 834 transitions. [2025-03-09 00:43:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 00:43:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-03-09 00:43:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:22,033 INFO L225 Difference]: With dead ends: 772 [2025-03-09 00:43:22,033 INFO L226 Difference]: Without dead ends: 772 [2025-03-09 00:43:22,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-09 00:43:22,033 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 12 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:22,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2528 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-09 00:43:22,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2025-03-09 00:43:22,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 766. [2025-03-09 00:43:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 477 states have (on average 1.6771488469601676) internal successors, (800), 759 states have internal predecessors, (800), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-03-09 00:43:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 829 transitions. [2025-03-09 00:43:22,043 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 829 transitions. Word has length 65 [2025-03-09 00:43:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:22,043 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 829 transitions. [2025-03-09 00:43:22,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:43:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 829 transitions. [2025-03-09 00:43:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-09 00:43:22,044 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:22,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:22,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 00:43:22,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:22,244 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:22,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash -776460820, now seen corresponding path program 1 times [2025-03-09 00:43:22,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:22,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827305019] [2025-03-09 00:43:22,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:22,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:22,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:22,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 00:43:22,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 00:43:22,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 00:43:22,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:22,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:22,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-09 00:43:22,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:22,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 00:43:22,454 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:22,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827305019] [2025-03-09 00:43:22,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827305019] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 00:43:22,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 00:43:22,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 00:43:22,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183564536] [2025-03-09 00:43:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 00:43:22,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 00:43:22,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:22,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 00:43:22,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:22,455 INFO L87 Difference]: Start difference. First operand 766 states and 829 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:43:22,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:22,487 INFO L93 Difference]: Finished difference Result 763 states and 823 transitions. [2025-03-09 00:43:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 00:43:22,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-03-09 00:43:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:22,489 INFO L225 Difference]: With dead ends: 763 [2025-03-09 00:43:22,490 INFO L226 Difference]: Without dead ends: 763 [2025-03-09 00:43:22,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 00:43:22,490 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 0 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:22,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2170 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-09 00:43:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-09 00:43:22,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2025-03-09 00:43:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 474 states have (on average 1.6793248945147679) internal successors, (796), 757 states have internal predecessors, (796), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-09 00:43:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 823 transitions. [2025-03-09 00:43:22,500 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 823 transitions. Word has length 65 [2025-03-09 00:43:22,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:22,501 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 823 transitions. [2025-03-09 00:43:22,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-09 00:43:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 823 transitions. [2025-03-09 00:43:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-09 00:43:22,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:22,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:22,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 00:43:22,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:22,702 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:22,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:22,703 INFO L85 PathProgramCache]: Analyzing trace with hash -181213625, now seen corresponding path program 1 times [2025-03-09 00:43:22,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:22,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695701787] [2025-03-09 00:43:22,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:22,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:22,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:22,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 00:43:22,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-09 00:43:22,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-09 00:43:22,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:22,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:22,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 00:43:22,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:22,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:22,923 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:22,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695701787] [2025-03-09 00:43:22,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695701787] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:43:22,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:43:22,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-09 00:43:22,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255161132] [2025-03-09 00:43:22,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:43:22,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 00:43:22,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:22,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 00:43:22,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-09 00:43:22,925 INFO L87 Difference]: Start difference. First operand 763 states and 823 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:43:23,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:23,012 INFO L93 Difference]: Finished difference Result 775 states and 840 transitions. [2025-03-09 00:43:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 00:43:23,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2025-03-09 00:43:23,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:23,015 INFO L225 Difference]: With dead ends: 775 [2025-03-09 00:43:23,015 INFO L226 Difference]: Without dead ends: 775 [2025-03-09 00:43:23,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-09 00:43:23,016 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 5 mSDsluCounter, 3606 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:23,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4331 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-09 00:43:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2025-03-09 00:43:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2025-03-09 00:43:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 483 states have (on average 1.679089026915114) internal successors, (811), 766 states have internal predecessors, (811), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-09 00:43:23,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 838 transitions. [2025-03-09 00:43:23,025 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 838 transitions. Word has length 66 [2025-03-09 00:43:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:23,025 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 838 transitions. [2025-03-09 00:43:23,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:43:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 838 transitions. [2025-03-09 00:43:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-09 00:43:23,026 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:23,026 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:23,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 00:43:23,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:23,230 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 982736107, now seen corresponding path program 2 times [2025-03-09 00:43:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851248414] [2025-03-09 00:43:23,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:43:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:23,234 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:23,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 00:43:23,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-09 00:43:32,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 00:43:32,380 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:43:32,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:32,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-09 00:43:32,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:32,467 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:43:32,467 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 [2025-03-09 00:43:32,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:43:32,587 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:43:32,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-09 00:43:32,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-09 00:43:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 00:43:32,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:32,677 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-09 00:43:32,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-09 00:43:32,718 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:32,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851248414] [2025-03-09 00:43:32,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851248414] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:43:32,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1202543716] [2025-03-09 00:43:32,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:43:32,718 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:43:32,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:43:32,722 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:43:32,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2025-03-09 00:43:32,895 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-09 00:43:33,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-09 00:43:33,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:43:33,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:33,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 00:43:33,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:33,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1202543716] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:43:33,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:43:33,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-09 00:43:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001820314] [2025-03-09 00:43:33,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:43:33,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 00:43:33,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:33,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 00:43:33,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=551, Unknown=8, NotChecked=0, Total=650 [2025-03-09 00:43:33,696 INFO L87 Difference]: Start difference. First operand 773 states and 838 transitions. Second operand has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:43:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:38,039 INFO L93 Difference]: Finished difference Result 789 states and 861 transitions. [2025-03-09 00:43:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-09 00:43:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2025-03-09 00:43:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:38,042 INFO L225 Difference]: With dead ends: 789 [2025-03-09 00:43:38,042 INFO L226 Difference]: Without dead ends: 785 [2025-03-09 00:43:38,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2025-03-09 00:43:38,043 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 491 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 6212 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:38,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 6212 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-09 00:43:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2025-03-09 00:43:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 781. [2025-03-09 00:43:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 492 states have (on average 1.670731707317073) internal successors, (822), 774 states have internal predecessors, (822), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-09 00:43:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 849 transitions. [2025-03-09 00:43:38,053 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 849 transitions. Word has length 69 [2025-03-09 00:43:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:38,053 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 849 transitions. [2025-03-09 00:43:38,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:43:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 849 transitions. [2025-03-09 00:43:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-09 00:43:38,053 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:38,054 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:38,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2025-03-09 00:43:38,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 00:43:38,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:38,454 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:38,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1867489132, now seen corresponding path program 1 times [2025-03-09 00:43:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109947213] [2025-03-09 00:43:38,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:43:38,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:38,457 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:38,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-09 00:43:38,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-09 00:43:38,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-09 00:43:38,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:43:38,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:38,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 00:43:38,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:38,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:39,114 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109947213] [2025-03-09 00:43:39,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109947213] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:43:39,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-09 00:43:39,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-09 00:43:39,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839999883] [2025-03-09 00:43:39,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-09 00:43:39,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 00:43:39,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:39,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 00:43:39,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-09 00:43:39,115 INFO L87 Difference]: Start difference. First operand 781 states and 849 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:43:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:43:40,237 INFO L93 Difference]: Finished difference Result 805 states and 888 transitions. [2025-03-09 00:43:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 00:43:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2025-03-09 00:43:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:43:40,240 INFO L225 Difference]: With dead ends: 805 [2025-03-09 00:43:40,240 INFO L226 Difference]: Without dead ends: 799 [2025-03-09 00:43:40,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-09 00:43:40,241 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 25 mSDsluCounter, 7944 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8669 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-09 00:43:40,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8669 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-09 00:43:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-09 00:43:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2025-03-09 00:43:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 510 states have (on average 1.6568627450980393) internal successors, (845), 792 states have internal predecessors, (845), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-09 00:43:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 872 transitions. [2025-03-09 00:43:40,250 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 872 transitions. Word has length 75 [2025-03-09 00:43:40,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:43:40,251 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 872 transitions. [2025-03-09 00:43:40,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-09 00:43:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 872 transitions. [2025-03-09 00:43:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-09 00:43:40,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:43:40,251 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:43:40,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-09 00:43:40,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:40,452 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:43:40,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:43:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash -111377300, now seen corresponding path program 2 times [2025-03-09 00:43:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:43:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041379259] [2025-03-09 00:43:40,453 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:43:40,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:43:40,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:43:40,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:43:40,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-09 00:43:40,603 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-09 00:43:55,797 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:43:55,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:43:55,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:55,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-09 00:43:55,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:55,885 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:43:55,886 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 [2025-03-09 00:43:55,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-09 00:43:55,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:43:55,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:43:55,989 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 22 treesize of output 10 [2025-03-09 00:43:55,992 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 9 treesize of output 3 [2025-03-09 00:43:56,290 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:43:56,291 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 62 treesize of output 57 [2025-03-09 00:43:56,299 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 30 treesize of output 13 [2025-03-09 00:43:56,323 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 31 treesize of output 13 [2025-03-09 00:43:56,326 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 9 treesize of output 3 [2025-03-09 00:43:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-09 00:43:56,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:56,640 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1425 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1426 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1426) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2025-03-09 00:43:56,645 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:43:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041379259] [2025-03-09 00:43:56,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041379259] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:43:56,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974154271] [2025-03-09 00:43:56,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 00:43:56,645 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:43:56,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:43:56,647 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:43:56,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-03-09 00:43:56,859 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-09 00:43:57,464 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-09 00:43:57,464 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 00:43:57,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:43:57,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-09 00:43:57,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:43:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:58,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:43:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 00:43:59,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [974154271] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 00:43:59,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 00:43:59,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-09 00:43:59,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299888208] [2025-03-09 00:43:59,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 00:43:59,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-09 00:43:59,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-09 00:43:59,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-09 00:43:59,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-03-09 00:43:59,816 INFO L87 Difference]: Start difference. First operand 799 states and 872 transitions. Second operand has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:44:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 00:44:18,995 INFO L93 Difference]: Finished difference Result 844 states and 948 transitions. [2025-03-09 00:44:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-03-09 00:44:18,996 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2025-03-09 00:44:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-09 00:44:18,998 INFO L225 Difference]: With dead ends: 844 [2025-03-09 00:44:18,998 INFO L226 Difference]: Without dead ends: 834 [2025-03-09 00:44:19,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3205, Invalid=15430, Unknown=1, NotChecked=270, Total=18906 [2025-03-09 00:44:19,001 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 517 mSDsluCounter, 15997 mSDsCounter, 0 mSdLazyCounter, 12281 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 16491 SdHoareTripleChecker+Invalid, 12338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 12281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2025-03-09 00:44:19,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 16491 Invalid, 12338 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 12281 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2025-03-09 00:44:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2025-03-09 00:44:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2025-03-09 00:44:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 546 states have (on average 1.6263736263736264) internal successors, (888), 827 states have internal predecessors, (888), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-09 00:44:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 915 transitions. [2025-03-09 00:44:19,009 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 915 transitions. Word has length 87 [2025-03-09 00:44:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-09 00:44:19,010 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 915 transitions. [2025-03-09 00:44:19,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-09 00:44:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 915 transitions. [2025-03-09 00:44:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-09 00:44:19,010 INFO L210 NwaCegarLoop]: Found error trace [2025-03-09 00:44:19,010 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 00:44:19,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2025-03-09 00:44:19,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-09 00:44:19,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:19,411 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr323REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-09 00:44:19,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 00:44:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash 661329097, now seen corresponding path program 1 times [2025-03-09 00:44:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-09 00:44:19,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184699201] [2025-03-09 00:44:19,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 00:44:19,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 00:44:19,414 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 00:44:19,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-09 00:44:19,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-09 00:44:19,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-09 00:44:19,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 00:44:19,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 00:44:19,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 111 conjuncts are in the unsatisfiable core [2025-03-09 00:44:19,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 00:44:19,759 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 [2025-03-09 00:44:19,811 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 [2025-03-09 00:44:19,820 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-09 00:44:19,820 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 [2025-03-09 00:44:19,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-09 00:44:19,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-09 00:44:19,892 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 22 treesize of output 10 [2025-03-09 00:44:19,895 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 9 treesize of output 3 [2025-03-09 00:44:20,347 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:44:20,348 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 62 treesize of output 57 [2025-03-09 00:44:20,354 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 30 treesize of output 13 [2025-03-09 00:44:20,423 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-09 00:44:20,424 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 62 treesize of output 57 [2025-03-09 00:44:20,433 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 30 treesize of output 13 [2025-03-09 00:44:20,455 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 31 treesize of output 13 [2025-03-09 00:44:20,461 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 9 treesize of output 3 [2025-03-09 00:44:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-03-09 00:44:20,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 00:44:20,553 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2098) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-09 00:44:20,578 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2098) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))))) is different from false [2025-03-09 00:44:21,382 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2190 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2191 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2191) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2190) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2190 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2191 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2190))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2191) .cse2 v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2098) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2025-03-09 00:44:21,393 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-09 00:44:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184699201] [2025-03-09 00:44:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184699201] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 00:44:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729036046] [2025-03-09 00:44:21,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 00:44:21,393 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-09 00:44:21,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-09 00:44:21,395 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-09 00:44:21,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-03-09 00:44:21,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes.