./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:20:27,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:20:27,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 18:20:27,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:20:27,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:20:28,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:20:28,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:20:28,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:20:28,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:20:28,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:20:28,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:20:28,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:20:28,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:20:28,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:20:28,031 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:20:28,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:20:28,032 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:20:28,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:20:28,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:20:28,036 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:20:28,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:20:28,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:20:28,046 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:20:28,046 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:20:28,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:20:28,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:20:28,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:20:28,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:20:28,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:20:28,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:20:28,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 18:20:28,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 18:20:28,047 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:20:28,047 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:20:28,047 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:20:28,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:20:28,049 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2024-10-11 18:20:28,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:20:28,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:20:28,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:20:28,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:20:28,419 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:20:28,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2024-10-11 18:20:29,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:20:30,043 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:20:30,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2024-10-11 18:20:30,056 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/07a63ca3e/1e453912009d4ada891e753cf49fe667/FLAGfb295f7d3 [2024-10-11 18:20:30,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/07a63ca3e/1e453912009d4ada891e753cf49fe667 [2024-10-11 18:20:30,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:20:30,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:20:30,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:20:30,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:20:30,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:20:30,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:20:30" (1/1) ... [2024-10-11 18:20:30,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66951913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:30, skipping insertion in model container [2024-10-11 18:20:30,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:20:30" (1/1) ... [2024-10-11 18:20:30,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:20:30,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:20:30,365 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 18:20:30,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20390a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:30, skipping insertion in model container [2024-10-11 18:20:30,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:20:30,366 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 18:20:30,367 INFO L158 Benchmark]: Toolchain (without parser) took 292.52ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 86.3MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 18:20:30,368 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:20:30,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.04ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 86.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 18:20:30,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 94.4MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.04ms. Allocated memory is still 144.7MB. Free memory was 98.8MB in the beginning and 86.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: 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/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:20:32,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:20:32,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 18:20:32,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:20:32,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:20:32,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:20:32,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:20:32,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:20:32,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:20:32,477 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:20:32,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:20:32,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:20:32,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:20:32,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:20:32,479 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:20:32,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:20:32,481 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:20:32,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:20:32,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:20:32,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:20:32,482 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:20:32,485 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:20:32,485 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:20:32,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:20:32,485 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:20:32,486 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 18:20:32,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:20:32,486 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 18:20:32,486 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:20:32,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:20:32,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:20:32,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:20:32,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:20:32,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:20:32,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:20:32,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:20:32,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:20:32,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:20:32,490 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 18:20:32,490 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 18:20:32,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:20:32,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:20:32,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:20:32,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:20:32,491 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 18:20:32,491 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2024-10-11 18:20:32,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:20:32,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:20:32,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:20:32,857 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:20:32,858 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:20:32,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2024-10-11 18:20:34,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:20:34,628 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:20:34,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2024-10-11 18:20:34,646 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/da58a7fe3/a50942a41ded4e00bdf2b21391d6bf66/FLAG6ab6ebbe7 [2024-10-11 18:20:34,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/da58a7fe3/a50942a41ded4e00bdf2b21391d6bf66 [2024-10-11 18:20:34,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:20:34,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:20:34,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:20:34,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:20:34,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:20:34,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:20:34" (1/1) ... [2024-10-11 18:20:34,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b35aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:34, skipping insertion in model container [2024-10-11 18:20:34,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:20:34" (1/1) ... [2024-10-11 18:20:35,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:20:35,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:20:35,315 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 18:20:35,321 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:20:35,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:20:35,374 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 18:20:35,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:20:35,434 INFO L204 MainTranslator]: Completed translation [2024-10-11 18:20:35,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35 WrapperNode [2024-10-11 18:20:35,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:20:35,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 18:20:35,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 18:20:35,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 18:20:35,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,468 INFO L138 Inliner]: procedures = 115, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2024-10-11 18:20:35,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 18:20:35,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 18:20:35,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 18:20:35,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 18:20:35,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,483 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,499 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-10-11 18:20:35,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 18:20:35,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 18:20:35,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 18:20:35,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 18:20:35,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (1/1) ... [2024-10-11 18:20:35,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:20:35,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:20:35,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 18:20:35,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 18:20:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2024-10-11 18:20:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2024-10-11 18:20:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 18:20:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 18:20:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 18:20:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 18:20:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 18:20:35,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 18:20:35,704 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 18:20:35,706 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 18:20:35,904 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-10-11 18:20:35,904 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 18:20:35,943 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 18:20:35,944 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 18:20:35,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:20:35 BoogieIcfgContainer [2024-10-11 18:20:35,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 18:20:35,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 18:20:35,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 18:20:35,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 18:20:35,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:20:34" (1/3) ... [2024-10-11 18:20:35,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bccf8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:20:35, skipping insertion in model container [2024-10-11 18:20:35,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:20:35" (2/3) ... [2024-10-11 18:20:35,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bccf8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:20:35, skipping insertion in model container [2024-10-11 18:20:35,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:20:35" (3/3) ... [2024-10-11 18:20:35,968 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2024-10-11 18:20:35,983 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 18:20:35,984 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 18:20:36,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 18:20:36,066 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;@301019c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 18:20:36,067 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-11 18:20:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 13 states have (on average 2.0) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 18:20:36,084 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:20:36,085 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:20:36,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:20:36,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:20:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1234311600, now seen corresponding path program 1 times [2024-10-11 18:20:36,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:20:36,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439293646] [2024-10-11 18:20:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:36,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:20:36,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 18:20:36,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 18:20:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:20:36,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 18:20:36,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:20:36,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 18:20:36,325 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |alloc_node_~temp~0#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2024-10-11 18:20:36,357 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 18:20:36,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 18:20:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:20:36,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:20:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:20:36,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:20:36,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439293646] [2024-10-11 18:20:36,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439293646] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:20:36,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:20:36,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2024-10-11 18:20:36,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615772178] [2024-10-11 18:20:36,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:20:36,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:20:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:20:36,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:20:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2024-10-11 18:20:36,618 INFO L87 Difference]: Start difference. First operand has 29 states, 13 states have (on average 2.0) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 18:20:36,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:20:36,836 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-10-11 18:20:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:20:36,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 11 [2024-10-11 18:20:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:20:36,845 INFO L225 Difference]: With dead ends: 25 [2024-10-11 18:20:36,845 INFO L226 Difference]: Without dead ends: 23 [2024-10-11 18:20:36,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-10-11 18:20:36,848 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:20:36,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2024-10-11 18:20:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-11 18:20:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-11 18:20:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2024-10-11 18:20:36,896 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2024-10-11 18:20:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:20:36,897 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2024-10-11 18:20:36,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 18:20:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2024-10-11 18:20:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 18:20:36,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:20:36,898 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:20:36,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 18:20:37,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:37,101 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:20:37,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:20:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1234311601, now seen corresponding path program 1 times [2024-10-11 18:20:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:20:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19608488] [2024-10-11 18:20:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:37,103 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:37,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:20:37,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 18:20:37,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 18:20:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:20:37,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 18:20:37,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:20:37,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 18:20:37,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 18:20:37,278 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (= (store |c_old(#length)| |alloc_node_~temp~0#1.base| (select |c_#length| |alloc_node_~temp~0#1.base|)) |c_#length|))) is different from true [2024-10-11 18:20:37,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:20:37,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:20:37,311 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:20:37,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 18:20:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:20:37,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:20:37,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:20:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19608488] [2024-10-11 18:20:37,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19608488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:20:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879819677] [2024-10-11 18:20:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:37,467 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:20:37,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:20:37,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-10-11 18:20:37,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-10-11 18:20:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:20:37,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 18:20:37,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:20:37,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 18:20:37,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 18:20:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:20:37,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 18:20:37,657 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:20:37,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 18:20:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:20:37,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:20:37,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1879819677] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:20:37,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:20:37,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-10-11 18:20:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851659612] [2024-10-11 18:20:37,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:20:37,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:20:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:20:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:20:37,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-10-11 18:20:37,795 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:37,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:20:37,982 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-10-11 18:20:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:20:37,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2024-10-11 18:20:37,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:20:37,984 INFO L225 Difference]: With dead ends: 19 [2024-10-11 18:20:37,985 INFO L226 Difference]: Without dead ends: 19 [2024-10-11 18:20:37,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2024-10-11 18:20:37,986 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:20:37,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 20 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2024-10-11 18:20:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-11 18:20:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-11 18:20:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-10-11 18:20:37,992 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 11 [2024-10-11 18:20:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:20:37,992 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-10-11 18:20:37,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-10-11 18:20:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 18:20:37,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:20:37,994 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:20:38,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 18:20:38,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-10-11 18:20:38,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-11 18:20:38,397 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:20:38,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:20:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash 762510746, now seen corresponding path program 1 times [2024-10-11 18:20:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:20:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458296953] [2024-10-11 18:20:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:38,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:38,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:20:38,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 18:20:38,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 18:20:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:20:38,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:20:38,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:20:38,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 18:20:38,474 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 15 treesize of output 1 [2024-10-11 18:20:38,490 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 19 treesize of output 11 [2024-10-11 18:20:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:20:38,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:20:38,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:20:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458296953] [2024-10-11 18:20:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458296953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:20:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:20:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:20:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857398081] [2024-10-11 18:20:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:20:38,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:20:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:20:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:20:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:20:38,500 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:20:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:20:38,601 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-10-11 18:20:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:20:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-10-11 18:20:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:20:38,602 INFO L225 Difference]: With dead ends: 18 [2024-10-11 18:20:38,602 INFO L226 Difference]: Without dead ends: 18 [2024-10-11 18:20:38,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:20:38,603 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:20:38,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:20:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-11 18:20:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-10-11 18:20:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-10-11 18:20:38,608 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2024-10-11 18:20:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:20:38,608 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-10-11 18:20:38,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:20:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-10-11 18:20:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 18:20:38,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:20:38,609 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:20:38,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-11 18:20:38,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:38,810 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:20:38,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:20:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash 762510747, now seen corresponding path program 1 times [2024-10-11 18:20:38,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:20:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812645780] [2024-10-11 18:20:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:38,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:20:38,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 18:20:38,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 18:20:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:20:38,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 18:20:38,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:20:38,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 18:20:38,907 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 15 treesize of output 1 [2024-10-11 18:20:38,909 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 11 treesize of output 7 [2024-10-11 18:20:38,942 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 17 treesize of output 9 [2024-10-11 18:20:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:20:38,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:20:38,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:20:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812645780] [2024-10-11 18:20:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812645780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:20:38,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:20:38,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:20:38,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148731902] [2024-10-11 18:20:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:20:38,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:20:38,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:20:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:20:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:20:38,960 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:20:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:20:39,045 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-10-11 18:20:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:20:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-10-11 18:20:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:20:39,048 INFO L225 Difference]: With dead ends: 17 [2024-10-11 18:20:39,048 INFO L226 Difference]: Without dead ends: 17 [2024-10-11 18:20:39,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:20:39,048 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:20:39,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:20:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-11 18:20:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-11 18:20:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-10-11 18:20:39,052 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2024-10-11 18:20:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:20:39,053 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2024-10-11 18:20:39,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:20:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-10-11 18:20:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 18:20:39,053 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:20:39,053 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:20:39,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 18:20:39,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:39,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:20:39,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:20:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash -124377448, now seen corresponding path program 1 times [2024-10-11 18:20:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:20:39,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110911425] [2024-10-11 18:20:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:39,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:20:39,261 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 18:20:39,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 18:20:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:20:39,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:20:39,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:20:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:20:39,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:20:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 18:20:39,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:20:39,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110911425] [2024-10-11 18:20:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110911425] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:20:39,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:20:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2024-10-11 18:20:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161555958] [2024-10-11 18:20:39,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:20:39,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 18:20:39,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:20:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 18:20:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:20:39,586 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:20:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:20:39,667 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2024-10-11 18:20:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:20:39,668 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2024-10-11 18:20:39,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:20:39,669 INFO L225 Difference]: With dead ends: 17 [2024-10-11 18:20:39,669 INFO L226 Difference]: Without dead ends: 17 [2024-10-11 18:20:39,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:20:39,670 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:20:39,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:20:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-11 18:20:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-10-11 18:20:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:20:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-10-11 18:20:39,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 16 [2024-10-11 18:20:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:20:39,676 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-10-11 18:20:39,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:20:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-10-11 18:20:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 18:20:39,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:20:39,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:20:39,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 18:20:39,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:39,880 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:20:39,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:20:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash 732358523, now seen corresponding path program 1 times [2024-10-11 18:20:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:20:39,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203689974] [2024-10-11 18:20:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:20:39,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:39,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:20:39,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 18:20:39,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 18:20:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 18:20:39,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 18:20:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 18:20:39,971 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-11 18:20:39,971 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 18:20:39,972 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2024-10-11 18:20:39,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2024-10-11 18:20:39,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2024-10-11 18:20:39,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 18:20:40,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 18:20:40,180 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-11 18:20:40,197 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 18:20:40,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:20:40 BoogieIcfgContainer [2024-10-11 18:20:40,200 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 18:20:40,201 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 18:20:40,201 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 18:20:40,201 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 18:20:40,201 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:20:35" (3/4) ... [2024-10-11 18:20:40,203 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-11 18:20:40,204 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 18:20:40,204 INFO L158 Benchmark]: Toolchain (without parser) took 5244.52ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 48.1MB in the beginning and 41.1MB in the end (delta: 7.0MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,204 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory is still 24.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:20:40,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.49ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 49.2MB in the end (delta: -1.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.42ms. Allocated memory is still 75.5MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,208 INFO L158 Benchmark]: Boogie Preprocessor took 45.81ms. Allocated memory is still 75.5MB. Free memory was 47.2MB in the beginning and 45.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,208 INFO L158 Benchmark]: RCFGBuilder took 429.71ms. Allocated memory is still 75.5MB. Free memory was 45.0MB in the beginning and 30.1MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,209 INFO L158 Benchmark]: TraceAbstraction took 4241.33ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 52.5MB in the beginning and 42.3MB in the end (delta: 10.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,209 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 102.8MB. Free memory was 42.1MB in the beginning and 41.1MB in the end (delta: 952.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 18:20:40,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 46.1MB. Free memory is still 24.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 472.49ms. Allocated memory is still 75.5MB. Free memory was 47.8MB in the beginning and 49.2MB in the end (delta: -1.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.42ms. Allocated memory is still 75.5MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.81ms. Allocated memory is still 75.5MB. Free memory was 47.2MB in the beginning and 45.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.71ms. Allocated memory is still 75.5MB. Free memory was 45.0MB in the beginning and 30.1MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4241.33ms. Allocated memory was 75.5MB in the beginning and 102.8MB in the end (delta: 27.3MB). Free memory was 52.5MB in the beginning and 42.3MB in the end (delta: 10.3MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 102.8MB. Free memory was 42.1MB in the beginning and 41.1MB in the end (delta: 952.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L569] RET, EXPR alloc_node() [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L570] RET, EXPR alloc_node() VAL [s={1:0}] [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 155 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 41 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 400 IncrementalHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 43 mSDtfsCounter, 400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 12 QuantifiedInterpolants, 620 SizeOfPredicates, 10 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-11 18:20:40,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample