./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.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/ldv-memsafety/memleaks_test19-2.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 1df2ca055a97db0a00e0c4b03f212c5ac3c2765d37b628ab5708f179a281754f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:04:40,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:04:40,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 18:04:40,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:04:40,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:04:40,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:04:40,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:04:40,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:04:40,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:04:40,922 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:04:40,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:04:40,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:04:40,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:04:40,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:04:40,926 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:04:40,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:04:40,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:04:40,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:04:40,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:04:40,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:04:40,928 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:04:40,932 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:04:40,932 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:04:40,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:04:40,932 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:04:40,933 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:04:40,933 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:04:40,933 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:04:40,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:04:40,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:04:40,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:04:40,934 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:04:40,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:04:40,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:04:40,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:04:40,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:04:40,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 18:04:40,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 18:04:40,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:04:40,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:04:40,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:04:40,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:04:40,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df2ca055a97db0a00e0c4b03f212c5ac3c2765d37b628ab5708f179a281754f [2024-10-11 18:04:41,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:04:41,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:04:41,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:04:41,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:04:41,258 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:04:41,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2024-10-11 18:04:42,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:04:43,203 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:04:43,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2024-10-11 18:04:43,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8e20cb41d/a90ea001b61447939e764a89859f3195/FLAGb0af2cf06 [2024-10-11 18:04:43,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8e20cb41d/a90ea001b61447939e764a89859f3195 [2024-10-11 18:04:43,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:04:43,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:04:43,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:04:43,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:04:43,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:04:43,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:04:43" (1/1) ... [2024-10-11 18:04:43,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c0cfb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:43, skipping insertion in model container [2024-10-11 18:04:43,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:04:43" (1/1) ... [2024-10-11 18:04:43,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:04:44,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:04:44,092 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 18:04:44,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c96637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:44, skipping insertion in model container [2024-10-11 18:04:44,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:04:44,094 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 18:04:44,096 INFO L158 Benchmark]: Toolchain (without parser) took 605.36ms. Allocated memory is still 186.6MB. Free memory was 134.3MB in the beginning and 118.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 18:04:44,097 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 76.8MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 18:04:44,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 601.49ms. Allocated memory is still 186.6MB. Free memory was 133.6MB in the beginning and 118.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 18:04:44,100 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 113.2MB. Free memory was 76.9MB in the beginning and 76.8MB in the end (delta: 69.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 601.49ms. Allocated memory is still 186.6MB. Free memory was 133.6MB in the beginning and 118.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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/ldv-memsafety/memleaks_test19-2.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 1df2ca055a97db0a00e0c4b03f212c5ac3c2765d37b628ab5708f179a281754f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:04:46,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:04:46,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 18:04:46,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:04:46,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:04:46,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:04:46,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:04:46,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:04:46,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:04:46,490 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:04:46,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:04:46,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:04:46,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:04:46,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:04:46,494 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:04:46,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:04:46,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 18:04:46,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:04:46,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 18:04:46,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:04:46,496 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:04:46,500 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:04:46,501 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:04:46,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:04:46,501 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:04:46,502 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 18:04:46,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:04:46,502 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 18:04:46,503 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:04:46,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 18:04:46,505 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:04:46,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:04:46,506 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:04:46,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:04:46,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:04:46,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:04:46,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:04:46,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:04:46,509 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 18:04:46,509 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 18:04:46,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:04:46,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:04:46,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:04:46,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:04:46,511 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 18:04:46,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df2ca055a97db0a00e0c4b03f212c5ac3c2765d37b628ab5708f179a281754f [2024-10-11 18:04:46,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:04:46,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:04:46,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:04:46,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:04:46,940 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:04:46,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2024-10-11 18:04:48,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:04:48,857 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:04:48,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2024-10-11 18:04:48,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/02a06b04c/cfa94de00dd6422682da6debdd051ccf/FLAG0ba461dab [2024-10-11 18:04:48,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/02a06b04c/cfa94de00dd6422682da6debdd051ccf [2024-10-11 18:04:48,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:04:48,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:04:48,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:04:48,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:04:48,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:04:48,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:04:48" (1/1) ... [2024-10-11 18:04:48,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a5c4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:48, skipping insertion in model container [2024-10-11 18:04:48,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:04:48" (1/1) ... [2024-10-11 18:04:48,969 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:04:49,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:04:49,480 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 18:04:49,489 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:04:49,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:04:49,567 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 18:04:49,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:04:49,660 INFO L204 MainTranslator]: Completed translation [2024-10-11 18:04:49,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49 WrapperNode [2024-10-11 18:04:49,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:04:49,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 18:04:49,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 18:04:49,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 18:04:49,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,729 INFO L138 Inliner]: procedures = 171, calls = 87, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 76 [2024-10-11 18:04:49,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 18:04:49,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 18:04:49,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 18:04:49,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 18:04:49,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,782 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 0, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-11 18:04:49,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 18:04:49,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 18:04:49,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 18:04:49,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 18:04:49,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (1/1) ... [2024-10-11 18:04:49,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:04:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:04:49,854 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 18:04:49,858 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 18:04:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure f19_undo [2024-10-11 18:04:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure f19_undo [2024-10-11 18:04:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-10-11 18:04:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-10-11 18:04:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 18:04:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 18:04:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 18:04:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 18:04:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 18:04:49,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 18:04:50,051 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 18:04:50,053 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 18:04:50,461 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-10-11 18:04:50,461 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 18:04:50,503 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 18:04:50,504 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 18:04:50,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:04:50 BoogieIcfgContainer [2024-10-11 18:04:50,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 18:04:50,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 18:04:50,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 18:04:50,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 18:04:50,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:04:48" (1/3) ... [2024-10-11 18:04:50,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6894e3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:04:50, skipping insertion in model container [2024-10-11 18:04:50,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:04:49" (2/3) ... [2024-10-11 18:04:50,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6894e3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:04:50, skipping insertion in model container [2024-10-11 18:04:50,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:04:50" (3/3) ... [2024-10-11 18:04:50,516 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test19-2.i [2024-10-11 18:04:50,537 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 18:04:50,538 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-11 18:04:50,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 18:04:50,598 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;@1a6942f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 18:04:50,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-10-11 18:04:50,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 32 states have (on average 1.9375) internal successors, (62), 57 states have internal predecessors, (62), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-11 18:04:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 18:04:50,612 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:50,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:50,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 966146119, now seen corresponding path program 1 times [2024-10-11 18:04:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:50,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378895466] [2024-10-11 18:04:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:50,636 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 18:04:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:50,640 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 18:04:50,641 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 18:04:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:50,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:04:50,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:50,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 18:04:50,875 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2024-10-11 18:04:50,924 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 18:04:50,925 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 18:04:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:50,971 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:50,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378895466] [2024-10-11 18:04:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378895466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:50,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:04:50,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895405869] [2024-10-11 18:04:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:50,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:04:50,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:04:51,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-10-11 18:04:51,024 INFO L87 Difference]: Start difference. First operand has 63 states, 32 states have (on average 1.9375) internal successors, (62), 57 states have internal predecessors, (62), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:51,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:51,277 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-10-11 18:04:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:04:51,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-10-11 18:04:51,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:51,291 INFO L225 Difference]: With dead ends: 77 [2024-10-11 18:04:51,292 INFO L226 Difference]: Without dead ends: 76 [2024-10-11 18:04:51,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-10-11 18:04:51,298 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 29 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:51,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 131 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2024-10-11 18:04:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-11 18:04:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2024-10-11 18:04:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 61 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-10-11 18:04:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2024-10-11 18:04:51,379 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 7 [2024-10-11 18:04:51,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:51,384 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2024-10-11 18:04:51,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2024-10-11 18:04:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-11 18:04:51,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:51,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:51,400 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 (2)] Forceful destruction successful, exit code 0 [2024-10-11 18:04:51,588 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 18:04:51,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:51,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash 966146120, now seen corresponding path program 1 times [2024-10-11 18:04:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:51,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463678469] [2024-10-11 18:04:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:51,595 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 18:04:51,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:51,599 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 18:04:51,601 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 18:04:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:51,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 18:04:51,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:51,705 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 18:04:51,712 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 18:04:51,802 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:04:51,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:04:51,857 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 18:04:51,877 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:04:51,878 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 18:04:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:51,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:51,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:51,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463678469] [2024-10-11 18:04:51,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463678469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:51,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:51,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 18:04:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803978503] [2024-10-11 18:04:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:51,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:04:51,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:04:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-10-11 18:04:51,902 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:52,155 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2024-10-11 18:04:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:04:52,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-10-11 18:04:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:52,157 INFO L225 Difference]: With dead ends: 76 [2024-10-11 18:04:52,157 INFO L226 Difference]: Without dead ends: 76 [2024-10-11 18:04:52,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-10-11 18:04:52,159 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 46 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:52,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 115 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 97 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2024-10-11 18:04:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-11 18:04:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2024-10-11 18:04:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 61 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 18:04:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2024-10-11 18:04:52,170 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 7 [2024-10-11 18:04:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:52,170 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2024-10-11 18:04:52,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2024-10-11 18:04:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 18:04:52,175 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:52,176 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:52,180 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 18:04:52,378 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 [2024-10-11 18:04:52,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:52,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:52,380 INFO L85 PathProgramCache]: Analyzing trace with hash -899449943, now seen corresponding path program 1 times [2024-10-11 18:04:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951446220] [2024-10-11 18:04:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:52,381 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 18:04:52,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:52,384 INFO L229 MonitoredProcess]: Starting monitored process 4 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 18:04:52,386 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 (4)] Waiting until timeout for monitored process [2024-10-11 18:04:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:52,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 18:04:52,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:52,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-11 18:04:52,541 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 20 treesize of output 8 [2024-10-11 18:04:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:52,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:52,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951446220] [2024-10-11 18:04:52,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951446220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:52,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:04:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115123584] [2024-10-11 18:04:52,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:52,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:04:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:04:52,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:04:52,558 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:52,678 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-10-11 18:04:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:04:52,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-10-11 18:04:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:52,683 INFO L225 Difference]: With dead ends: 77 [2024-10-11 18:04:52,685 INFO L226 Difference]: Without dead ends: 77 [2024-10-11 18:04:52,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:04:52,689 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 4 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:52,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 272 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:04:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-11 18:04:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 72. [2024-10-11 18:04:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 44 states have (on average 1.75) internal successors, (77), 63 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 18:04:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2024-10-11 18:04:52,705 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 13 [2024-10-11 18:04:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:52,705 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2024-10-11 18:04:52,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2024-10-11 18:04:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-11 18:04:52,706 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:52,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:52,713 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 (4)] Forceful destruction successful, exit code 0 [2024-10-11 18:04:52,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /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 18:04:52,910 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:52,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1095963448, now seen corresponding path program 1 times [2024-10-11 18:04:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:52,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695937364] [2024-10-11 18:04:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:52,912 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 18:04:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:52,915 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 18:04:52,917 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 18:04:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:52,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:04:52,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:53,008 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:53,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695937364] [2024-10-11 18:04:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695937364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:04:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577686955] [2024-10-11 18:04:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:53,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:04:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:04:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:04:53,011 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:53,068 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2024-10-11 18:04:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:04:53,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-10-11 18:04:53,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:53,069 INFO L225 Difference]: With dead ends: 75 [2024-10-11 18:04:53,070 INFO L226 Difference]: Without dead ends: 75 [2024-10-11 18:04:53,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:04:53,071 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:53,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 208 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:04:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-11 18:04:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-11 18:04:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.702127659574468) internal successors, (80), 66 states have internal predecessors, (80), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 18:04:53,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-10-11 18:04:53,078 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 13 [2024-10-11 18:04:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:53,079 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-10-11 18:04:53,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-10-11 18:04:53,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 18:04:53,080 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:53,080 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:53,084 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 (5)] Ended with exit code 0 [2024-10-11 18:04:53,283 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 18:04:53,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:53,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1489842952, now seen corresponding path program 1 times [2024-10-11 18:04:53,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:53,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842843554] [2024-10-11 18:04:53,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:53,285 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 18:04:53,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:53,289 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 18:04:53,291 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 18:04:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:53,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 18:04:53,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:53,374 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 8 treesize of output 1 [2024-10-11 18:04:53,412 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2024-10-11 18:04:53,441 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 18:04:53,441 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 18:04:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:53,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:53,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842843554] [2024-10-11 18:04:53,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842843554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:53,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:53,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:04:53,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387518636] [2024-10-11 18:04:53,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:53,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:04:53,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:04:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2024-10-11 18:04:53,464 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 18:04:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:53,678 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2024-10-11 18:04:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:04:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 15 [2024-10-11 18:04:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:53,680 INFO L225 Difference]: With dead ends: 76 [2024-10-11 18:04:53,680 INFO L226 Difference]: Without dead ends: 76 [2024-10-11 18:04:53,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-10-11 18:04:53,681 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 26 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:53,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 158 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2024-10-11 18:04:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-11 18:04:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2024-10-11 18:04:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 64 states have internal predecessors, (76), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 18:04:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-10-11 18:04:53,695 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 15 [2024-10-11 18:04:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:53,695 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-10-11 18:04:53,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 18:04:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-10-11 18:04:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 18:04:53,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:53,698 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:53,702 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 18:04:53,898 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 18:04:53,899 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:53,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1489842953, now seen corresponding path program 1 times [2024-10-11 18:04:53,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:53,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504646233] [2024-10-11 18:04:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:53,900 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 18:04:53,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:53,901 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 18:04:53,902 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 18:04:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:53,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 18:04:53,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:54,151 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:04:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:04:54,188 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 18:04:54,201 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:04:54,202 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 18:04:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:54,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:54,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:54,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504646233] [2024-10-11 18:04:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504646233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:54,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 18:04:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639873031] [2024-10-11 18:04:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:54,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:04:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:04:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2024-10-11 18:04:54,220 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 18:04:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:54,517 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-10-11 18:04:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 18:04:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 15 [2024-10-11 18:04:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:54,519 INFO L225 Difference]: With dead ends: 73 [2024-10-11 18:04:54,519 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 18:04:54,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=49, Unknown=1, NotChecked=14, Total=90 [2024-10-11 18:04:54,520 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 24 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:54,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 236 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 212 Invalid, 0 Unknown, 97 Unchecked, 0.3s Time] [2024-10-11 18:04:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 18:04:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-10-11 18:04:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 62 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 18:04:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2024-10-11 18:04:54,527 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 15 [2024-10-11 18:04:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:54,527 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2024-10-11 18:04:54,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 18:04:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2024-10-11 18:04:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 18:04:54,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:54,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:54,535 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 (7)] Forceful destruction successful, exit code 0 [2024-10-11 18:04:54,729 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 18:04:54,730 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:54,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash 384886086, now seen corresponding path program 1 times [2024-10-11 18:04:54,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:54,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193919008] [2024-10-11 18:04:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:54,731 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 18:04:54,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:54,732 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 18:04:54,737 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 18:04:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:54,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:04:54,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:54,923 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#a19~0#1.base_13| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#a19~0#1.base_13| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#a19~0#1.base_13|)))) is different from true [2024-10-11 18:04:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:54,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:54,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193919008] [2024-10-11 18:04:54,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193919008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:54,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:54,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:04:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144142916] [2024-10-11 18:04:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:54,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:04:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:54,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:04:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-10-11 18:04:54,926 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:55,075 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2024-10-11 18:04:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:04:55,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-11 18:04:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:55,077 INFO L225 Difference]: With dead ends: 99 [2024-10-11 18:04:55,077 INFO L226 Difference]: Without dead ends: 94 [2024-10-11 18:04:55,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-10-11 18:04:55,078 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 34 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:55,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 156 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2024-10-11 18:04:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-11 18:04:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2024-10-11 18:04:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 67 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:04:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2024-10-11 18:04:55,095 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 14 [2024-10-11 18:04:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:55,095 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2024-10-11 18:04:55,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 18:04:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2024-10-11 18:04:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 18:04:55,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:55,097 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:55,101 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 18:04:55,297 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 18:04:55,298 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:55,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1236752283, now seen corresponding path program 1 times [2024-10-11 18:04:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:55,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353637579] [2024-10-11 18:04:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:55,299 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 18:04:55,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:55,300 INFO L229 MonitoredProcess]: Starting monitored process 9 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 18:04:55,301 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 (9)] Waiting until timeout for monitored process [2024-10-11 18:04:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:55,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 18:04:55,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:04:55,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:55,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353637579] [2024-10-11 18:04:55,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353637579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:55,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:55,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 18:04:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318067888] [2024-10-11 18:04:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:55,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:04:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:04:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:04:55,411 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:04:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:55,453 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2024-10-11 18:04:55,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:04:55,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-10-11 18:04:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:55,455 INFO L225 Difference]: With dead ends: 94 [2024-10-11 18:04:55,455 INFO L226 Difference]: Without dead ends: 94 [2024-10-11 18:04:55,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:04:55,456 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:55,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 168 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:04:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-11 18:04:55,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2024-10-11 18:04:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 73 states have internal predecessors, (85), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:04:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-10-11 18:04:55,463 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 20 [2024-10-11 18:04:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:55,463 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-10-11 18:04:55,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:04:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-10-11 18:04:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-11 18:04:55,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:55,464 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:55,469 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 (9)] Ended with exit code 0 [2024-10-11 18:04:55,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 18:04:55,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:55,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1236692701, now seen corresponding path program 1 times [2024-10-11 18:04:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209208600] [2024-10-11 18:04:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:55,667 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 18:04:55,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:55,668 INFO L229 MonitoredProcess]: Starting monitored process 10 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 18:04:55,669 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 (10)] Waiting until timeout for monitored process [2024-10-11 18:04:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:55,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 18:04:55,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:55,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 18:04:55,801 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 16 treesize of output 8 [2024-10-11 18:04:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:04:55,810 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:04:55,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:04:55,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209208600] [2024-10-11 18:04:55,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209208600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:04:55,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:04:55,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:04:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107184618] [2024-10-11 18:04:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:04:55,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:04:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:04:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:04:55,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:04:55,812 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 18:04:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:04:55,884 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2024-10-11 18:04:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:04:55,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 20 [2024-10-11 18:04:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:04:55,885 INFO L225 Difference]: With dead ends: 81 [2024-10-11 18:04:55,885 INFO L226 Difference]: Without dead ends: 81 [2024-10-11 18:04:55,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:04:55,886 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:04:55,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:04:55,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-11 18:04:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-11 18:04:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 70 states have internal predecessors, (81), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:04:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2024-10-11 18:04:55,894 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 20 [2024-10-11 18:04:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:04:55,894 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2024-10-11 18:04:55,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 18:04:55,898 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2024-10-11 18:04:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 18:04:55,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:04:55,899 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:04:55,905 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 (10)] Ended with exit code 0 [2024-10-11 18:04:56,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 18:04:56,100 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:04:56,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:04:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash 120718463, now seen corresponding path program 1 times [2024-10-11 18:04:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:04:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169200170] [2024-10-11 18:04:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:04:56,101 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 18:04:56,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:04:56,104 INFO L229 MonitoredProcess]: Starting monitored process 11 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 18:04:56,106 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 (11)] Waiting until timeout for monitored process [2024-10-11 18:04:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:04:56,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 18:04:56,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:04:56,223 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 18:04:56,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:04:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:04:56,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:00,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169200170] [2024-10-11 18:05:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169200170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [33925540] [2024-10-11 18:05:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:00,484 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:05:00,487 INFO L229 MonitoredProcess]: Starting monitored process 12 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 18:05:00,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-10-11 18:05:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:00,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 18:05:00,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:00,664 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 18:05:00,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:00,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:04,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [33925540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:04,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:05:04,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-10-11 18:05:04,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696270127] [2024-10-11 18:05:04,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:05:04,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:05:04,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:05:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2024-10-11 18:05:04,880 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 18:05:08,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:05:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:09,062 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2024-10-11 18:05:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 18:05:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 21 [2024-10-11 18:05:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:09,063 INFO L225 Difference]: With dead ends: 87 [2024-10-11 18:05:09,064 INFO L226 Difference]: Without dead ends: 87 [2024-10-11 18:05:09,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=43, Invalid=138, Unknown=1, NotChecked=0, Total=182 [2024-10-11 18:05:09,064 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:09,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 224 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-10-11 18:05:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-11 18:05:09,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2024-10-11 18:05:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 74 states have internal predecessors, (85), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2024-10-11 18:05:09,077 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 21 [2024-10-11 18:05:09,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:09,078 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2024-10-11 18:05:09,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 18:05:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2024-10-11 18:05:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:05:09,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:09,081 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:09,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-10-11 18:05:09,285 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 (11)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:09,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,11 /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 18:05:09,482 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:09,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1797876530, now seen corresponding path program 1 times [2024-10-11 18:05:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:09,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540896441] [2024-10-11 18:05:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:09,483 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 18:05:09,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:09,485 INFO L229 MonitoredProcess]: Starting monitored process 13 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 18:05:09,485 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 (13)] Waiting until timeout for monitored process [2024-10-11 18:05:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:09,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:05:09,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:05:09,625 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:09,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:09,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540896441] [2024-10-11 18:05:09,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540896441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:09,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:09,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:05:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817982471] [2024-10-11 18:05:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:09,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:05:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:05:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:05:09,627 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:09,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:09,801 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2024-10-11 18:05:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 18:05:09,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-10-11 18:05:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:09,804 INFO L225 Difference]: With dead ends: 96 [2024-10-11 18:05:09,804 INFO L226 Difference]: Without dead ends: 96 [2024-10-11 18:05:09,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:05:09,805 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:09,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 168 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:05:09,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-11 18:05:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2024-10-11 18:05:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 75 states have internal predecessors, (88), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2024-10-11 18:05:09,816 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 23 [2024-10-11 18:05:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:09,816 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2024-10-11 18:05:09,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2024-10-11 18:05:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:05:09,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:09,817 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:09,824 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 (13)] Ended with exit code 0 [2024-10-11 18:05:10,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 18:05:10,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:10,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1797876529, now seen corresponding path program 1 times [2024-10-11 18:05:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:10,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592099380] [2024-10-11 18:05:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:10,019 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 18:05:10,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:10,020 INFO L229 MonitoredProcess]: Starting monitored process 14 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 18:05:10,022 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 (14)] Waiting until timeout for monitored process [2024-10-11 18:05:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:10,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:05:10,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:05:10,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:10,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592099380] [2024-10-11 18:05:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592099380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:10,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:10,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:05:10,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664527301] [2024-10-11 18:05:10,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:10,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:05:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:05:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:05:10,245 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:10,432 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2024-10-11 18:05:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:05:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-10-11 18:05:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:10,433 INFO L225 Difference]: With dead ends: 96 [2024-10-11 18:05:10,433 INFO L226 Difference]: Without dead ends: 96 [2024-10-11 18:05:10,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 18:05:10,434 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 15 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:10,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 219 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:05:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-11 18:05:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2024-10-11 18:05:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 79 states have internal predecessors, (93), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2024-10-11 18:05:10,439 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 23 [2024-10-11 18:05:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:10,439 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2024-10-11 18:05:10,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2024-10-11 18:05:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 18:05:10,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:10,441 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:10,445 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 (14)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:10,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 18:05:10,645 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:10,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash -552694844, now seen corresponding path program 1 times [2024-10-11 18:05:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:10,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124064565] [2024-10-11 18:05:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:10,646 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 18:05:10,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:10,647 INFO L229 MonitoredProcess]: Starting monitored process 15 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 18:05:10,648 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 (15)] Waiting until timeout for monitored process [2024-10-11 18:05:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:10,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 18:05:10,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:10,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 18:05:11,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-10-11 18:05:11,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:11,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:11,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124064565] [2024-10-11 18:05:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124064565] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [464214091] [2024-10-11 18:05:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:11,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:11,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:05:11,296 INFO L229 MonitoredProcess]: Starting monitored process 16 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 18:05:11,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-10-11 18:05:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:11,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 18:05:11,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:11,529 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 18:05:15,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:15,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 18:05:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:15,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [464214091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:15,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:05:15,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-11 18:05:15,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008680545] [2024-10-11 18:05:15,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:05:15,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 18:05:15,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:15,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 18:05:15,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=256, Unknown=1, NotChecked=0, Total=342 [2024-10-11 18:05:15,916 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (4), 4 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 18:05:19,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:05:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:21,100 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2024-10-11 18:05:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 18:05:21,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (4), 4 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 22 [2024-10-11 18:05:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:21,102 INFO L225 Difference]: With dead ends: 150 [2024-10-11 18:05:21,103 INFO L226 Difference]: Without dead ends: 150 [2024-10-11 18:05:21,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=147, Invalid=554, Unknown=1, NotChecked=0, Total=702 [2024-10-11 18:05:21,104 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 134 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:21,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 222 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 215 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2024-10-11 18:05:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-10-11 18:05:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2024-10-11 18:05:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.4057971014492754) internal successors, (97), 83 states have internal predecessors, (97), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2024-10-11 18:05:21,109 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 22 [2024-10-11 18:05:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:21,110 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2024-10-11 18:05:21,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (4), 4 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 18:05:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2024-10-11 18:05:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:05:21,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:21,111 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:21,117 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 (15)] Ended with exit code 0 [2024-10-11 18:05:21,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:21,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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=3,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:21,516 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:21,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 100402391, now seen corresponding path program 1 times [2024-10-11 18:05:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:21,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084490733] [2024-10-11 18:05:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:21,517 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 18:05:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:21,519 INFO L229 MonitoredProcess]: Starting monitored process 17 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 18:05:21,521 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 (17)] Waiting until timeout for monitored process [2024-10-11 18:05:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:21,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 18:05:21,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:21,698 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 18:05:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:05:21,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:21,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:21,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084490733] [2024-10-11 18:05:21,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084490733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:21,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:21,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 18:05:21,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821851410] [2024-10-11 18:05:21,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:21,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:05:21,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:05:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 18:05:21,789 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:22,059 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2024-10-11 18:05:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 18:05:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-10-11 18:05:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:22,060 INFO L225 Difference]: With dead ends: 100 [2024-10-11 18:05:22,060 INFO L226 Difference]: Without dead ends: 100 [2024-10-11 18:05:22,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:05:22,061 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:22,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 279 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 18:05:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-10-11 18:05:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2024-10-11 18:05:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.391304347826087) internal successors, (96), 83 states have internal predecessors, (96), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2024-10-11 18:05:22,068 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2024-10-11 18:05:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:22,068 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2024-10-11 18:05:22,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2024-10-11 18:05:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:05:22,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:22,074 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:22,079 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 (17)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:22,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 18:05:22,275 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1797843282, now seen corresponding path program 1 times [2024-10-11 18:05:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041004199] [2024-10-11 18:05:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:22,277 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 18:05:22,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:22,280 INFO L229 MonitoredProcess]: Starting monitored process 18 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 18:05:22,281 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 (18)] Waiting until timeout for monitored process [2024-10-11 18:05:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:22,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 18:05:22,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:05:22,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:22,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:22,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041004199] [2024-10-11 18:05:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041004199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:22,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:22,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 18:05:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030563587] [2024-10-11 18:05:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:22,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:05:22,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:05:22,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:05:22,447 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 18:05:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:22,814 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2024-10-11 18:05:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 18:05:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) Word has length 23 [2024-10-11 18:05:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:22,816 INFO L225 Difference]: With dead ends: 108 [2024-10-11 18:05:22,816 INFO L226 Difference]: Without dead ends: 108 [2024-10-11 18:05:22,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-11 18:05:22,817 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:22,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 148 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:05:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-11 18:05:22,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2024-10-11 18:05:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 86 states have internal predecessors, (101), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2024-10-11 18:05:22,826 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 23 [2024-10-11 18:05:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:22,828 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2024-10-11 18:05:22,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 18:05:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2024-10-11 18:05:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:05:22,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:22,830 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:22,837 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 (18)] Ended with exit code 0 [2024-10-11 18:05:23,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 18:05:23,031 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:23,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1797843281, now seen corresponding path program 1 times [2024-10-11 18:05:23,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:23,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438288735] [2024-10-11 18:05:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:23,032 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 18:05:23,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:23,035 INFO L229 MonitoredProcess]: Starting monitored process 19 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 18:05:23,036 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 (19)] Waiting until timeout for monitored process [2024-10-11 18:05:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:23,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 18:05:23,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:23,267 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:05:23,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 18:05:23,307 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 18:05:23,322 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 18:05:23,323 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 18:05:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:23,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:23,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:23,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438288735] [2024-10-11 18:05:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438288735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:23,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 18:05:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106982863] [2024-10-11 18:05:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:23,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 18:05:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 18:05:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2024-10-11 18:05:23,409 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 18:05:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:23,741 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2024-10-11 18:05:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 18:05:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 23 [2024-10-11 18:05:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:23,743 INFO L225 Difference]: With dead ends: 107 [2024-10-11 18:05:23,743 INFO L226 Difference]: Without dead ends: 107 [2024-10-11 18:05:23,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2024-10-11 18:05:23,743 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:23,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 125 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 95 Unchecked, 0.3s Time] [2024-10-11 18:05:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-11 18:05:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2024-10-11 18:05:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.375) internal successors, (99), 85 states have internal predecessors, (99), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2024-10-11 18:05:23,750 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 23 [2024-10-11 18:05:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:23,750 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2024-10-11 18:05:23,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 18:05:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2024-10-11 18:05:23,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:05:23,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:23,751 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:23,755 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 (19)] Ended with exit code 0 [2024-10-11 18:05:23,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 18:05:23,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:23,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash 46329121, now seen corresponding path program 1 times [2024-10-11 18:05:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859424312] [2024-10-11 18:05:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:23,952 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 18:05:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:23,954 INFO L229 MonitoredProcess]: Starting monitored process 20 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 18:05:23,955 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 (20)] Waiting until timeout for monitored process [2024-10-11 18:05:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:24,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 18:05:24,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:24,060 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 18:05:24,102 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 18:05:24,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-10-11 18:05:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-11 18:05:24,258 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 18:05:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:24,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:28,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859424312] [2024-10-11 18:05:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859424312] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1743024696] [2024-10-11 18:05:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:28,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:28,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:05:28,468 INFO L229 MonitoredProcess]: Starting monitored process 21 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 18:05:28,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-10-11 18:05:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:28,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 18:05:28,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:28,620 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 18:05:28,671 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 18:05:28,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-10-11 18:05:28,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-11 18:05:28,896 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 18:05:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:28,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:29,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1743024696] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:29,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:05:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-10-11 18:05:29,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345712697] [2024-10-11 18:05:29,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:05:29,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:05:29,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:05:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2024-10-11 18:05:29,065 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 18:05:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:29,863 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2024-10-11 18:05:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 18:05:29,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 23 [2024-10-11 18:05:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:29,864 INFO L225 Difference]: With dead ends: 105 [2024-10-11 18:05:29,864 INFO L226 Difference]: Without dead ends: 105 [2024-10-11 18:05:29,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2024-10-11 18:05:29,865 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:29,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 239 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 18:05:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-11 18:05:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-10-11 18:05:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 76 states have (on average 1.355263157894737) internal successors, (103), 89 states have internal predecessors, (103), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-10-11 18:05:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-10-11 18:05:29,872 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 23 [2024-10-11 18:05:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:29,873 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-10-11 18:05:29,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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 18:05:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-10-11 18:05:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-11 18:05:29,873 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:29,874 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:29,881 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 (20)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:30,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:30,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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=3,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:30,275 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:30,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:30,275 INFO L85 PathProgramCache]: Analyzing trace with hash -362495104, now seen corresponding path program 1 times [2024-10-11 18:05:30,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:30,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878961356] [2024-10-11 18:05:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:30,275 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 18:05:30,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:30,277 INFO L229 MonitoredProcess]: Starting monitored process 22 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 18:05:30,278 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 (22)] Waiting until timeout for monitored process [2024-10-11 18:05:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:30,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:05:30,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:30,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 18:05:30,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-11 18:05:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:30,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:30,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:30,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878961356] [2024-10-11 18:05:30,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878961356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:30,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:30,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:05:30,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931618125] [2024-10-11 18:05:30,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:30,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:05:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:30,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:05:30,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:05:30,557 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 18:05:30,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:30,819 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2024-10-11 18:05:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:05:30,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 23 [2024-10-11 18:05:30,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:30,821 INFO L225 Difference]: With dead ends: 85 [2024-10-11 18:05:30,821 INFO L226 Difference]: Without dead ends: 80 [2024-10-11 18:05:30,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:05:30,821 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 1 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:30,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 253 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 18:05:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-11 18:05:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-11 18:05:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 69 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:05:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2024-10-11 18:05:30,826 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 23 [2024-10-11 18:05:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:30,826 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2024-10-11 18:05:30,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 18:05:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2024-10-11 18:05:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 18:05:30,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:30,827 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:30,832 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 (22)] Ended with exit code 0 [2024-10-11 18:05:31,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 18:05:31,028 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:31,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1182493138, now seen corresponding path program 1 times [2024-10-11 18:05:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:31,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144145126] [2024-10-11 18:05:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:31,029 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 18:05:31,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:31,030 INFO L229 MonitoredProcess]: Starting monitored process 23 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 18:05:31,031 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 (23)] Waiting until timeout for monitored process [2024-10-11 18:05:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:31,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 18:05:31,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:31,752 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 18:05:32,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 18:05:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:32,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:32,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:32,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144145126] [2024-10-11 18:05:32,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144145126] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:32,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:32,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 18:05:32,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318709379] [2024-10-11 18:05:32,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:32,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 18:05:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:32,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 18:05:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 18:05:32,924 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:35,173 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2024-10-11 18:05:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 18:05:35,174 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-10-11 18:05:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:35,175 INFO L225 Difference]: With dead ends: 81 [2024-10-11 18:05:35,175 INFO L226 Difference]: Without dead ends: 81 [2024-10-11 18:05:35,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 18:05:35,175 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:35,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 196 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-11 18:05:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-11 18:05:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-10-11 18:05:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.368421052631579) internal successors, (78), 69 states have internal predecessors, (78), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:05:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-10-11 18:05:35,179 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 25 [2024-10-11 18:05:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:35,179 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-10-11 18:05:35,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-10-11 18:05:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:05:35,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:35,179 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:35,185 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 (23)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:35,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 18:05:35,380 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:35,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash 101447712, now seen corresponding path program 1 times [2024-10-11 18:05:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:35,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184071557] [2024-10-11 18:05:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:35,381 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 18:05:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:35,383 INFO L229 MonitoredProcess]: Starting monitored process 24 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 18:05:35,383 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 (24)] Waiting until timeout for monitored process [2024-10-11 18:05:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:35,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 18:05:35,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:05:35,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:35,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184071557] [2024-10-11 18:05:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184071557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:35,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 18:05:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41228496] [2024-10-11 18:05:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:35,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:05:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:05:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:05:35,550 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:05:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:35,674 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-10-11 18:05:35,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:05:35,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-10-11 18:05:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:35,676 INFO L225 Difference]: With dead ends: 80 [2024-10-11 18:05:35,676 INFO L226 Difference]: Without dead ends: 80 [2024-10-11 18:05:35,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:05:35,677 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:35,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:05:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-11 18:05:35,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-11 18:05:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 69 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:05:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2024-10-11 18:05:35,680 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 24 [2024-10-11 18:05:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:35,681 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2024-10-11 18:05:35,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:05:35,682 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2024-10-11 18:05:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 18:05:35,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:35,682 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:35,687 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 (24)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:35,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 18:05:35,886 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:35,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash 101433157, now seen corresponding path program 1 times [2024-10-11 18:05:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884384811] [2024-10-11 18:05:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:35,887 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 18:05:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:35,889 INFO L229 MonitoredProcess]: Starting monitored process 25 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 18:05:35,890 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 (25)] Waiting until timeout for monitored process [2024-10-11 18:05:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:36,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 18:05:36,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:36,307 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 18:05:36,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:37,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:41,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:41,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884384811] [2024-10-11 18:05:41,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884384811] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:41,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1098520500] [2024-10-11 18:05:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:41,628 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:41,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:05:41,630 INFO L229 MonitoredProcess]: Starting monitored process 26 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 18:05:41,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-10-11 18:05:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:41,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 18:05:41,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:41,920 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 18:05:42,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:42,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:46,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1098520500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:46,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:05:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-10-11 18:05:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257623723] [2024-10-11 18:05:46,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:05:46,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 18:05:46,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 18:05:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2024-10-11 18:05:46,650 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 18:05:50,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:05:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:51,472 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-10-11 18:05:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 18:05:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 24 [2024-10-11 18:05:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:51,473 INFO L225 Difference]: With dead ends: 80 [2024-10-11 18:05:51,473 INFO L226 Difference]: Without dead ends: 80 [2024-10-11 18:05:51,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=58, Invalid=213, Unknown=1, NotChecked=0, Total=272 [2024-10-11 18:05:51,474 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 50 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:51,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 249 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-10-11 18:05:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-11 18:05:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-10-11 18:05:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 68 states have internal predecessors, (76), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:05:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2024-10-11 18:05:51,478 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 24 [2024-10-11 18:05:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:51,479 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2024-10-11 18:05:51,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 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 18:05:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2024-10-11 18:05:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 18:05:51,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:51,479 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:51,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:51,684 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 (25)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:51,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,25 /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 18:05:51,880 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f19_undoErr4ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:51,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1997418425, now seen corresponding path program 1 times [2024-10-11 18:05:51,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:51,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308124429] [2024-10-11 18:05:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:51,881 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 18:05:51,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:51,883 INFO L229 MonitoredProcess]: Starting monitored process 27 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 18:05:51,884 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 (27)] Waiting until timeout for monitored process [2024-10-11 18:05:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:51,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 18:05:51,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:52,021 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 18:05:52,161 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 18:05:52,380 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 18:05:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:05:52,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:05:52,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308124429] [2024-10-11 18:05:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308124429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:05:52,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:05:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 18:05:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436871830] [2024-10-11 18:05:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:05:52,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 18:05:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:05:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 18:05:52,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 18:05:52,466 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:05:53,457 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-10-11 18:05:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 18:05:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-10-11 18:05:53,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:05:53,459 INFO L225 Difference]: With dead ends: 85 [2024-10-11 18:05:53,459 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 18:05:53,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:05:53,460 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 18:05:53,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 249 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 18:05:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 18:05:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-10-11 18:05:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 72 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:05:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2024-10-11 18:05:53,464 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 26 [2024-10-11 18:05:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:05:53,464 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2024-10-11 18:05:53,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 18:05:53,465 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2024-10-11 18:05:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 18:05:53,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:05:53,465 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:05:53,471 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 (27)] Forceful destruction successful, exit code 0 [2024-10-11 18:05:53,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 18:05:53,666 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:05:53,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:05:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1150539314, now seen corresponding path program 1 times [2024-10-11 18:05:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:05:53,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036986985] [2024-10-11 18:05:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:53,667 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 18:05:53,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:05:53,668 INFO L229 MonitoredProcess]: Starting monitored process 28 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 18:05:53,669 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 (28)] Waiting until timeout for monitored process [2024-10-11 18:05:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:53,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 18:05:53,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:53,978 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 18:05:54,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:54,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 18:05:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:05:54,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:05:59,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:05:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036986985] [2024-10-11 18:05:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036986985] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:05:59,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031774587] [2024-10-11 18:05:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:05:59,279 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-10-11 18:05:59,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 [2024-10-11 18:05:59,280 INFO L229 MonitoredProcess]: Starting monitored process 29 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 18:05:59,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-10-11 18:05:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:05:59,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 18:05:59,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:05:59,552 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 18:05:59,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-11 18:05:59,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 18:06:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:06:00,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:06:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2031774587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:06:00,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 18:06:00,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-10-11 18:06:00,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8634004] [2024-10-11 18:06:00,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 18:06:00,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 18:06:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:06:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 18:06:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2024-10-11 18:06:00,179 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 18:06:04,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:06:08,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 18:06:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:06:09,311 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2024-10-11 18:06:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 18:06:09,312 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 25 [2024-10-11 18:06:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:06:09,313 INFO L225 Difference]: With dead ends: 84 [2024-10-11 18:06:09,313 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 18:06:09,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=58, Invalid=213, Unknown=1, NotChecked=0, Total=272 [2024-10-11 18:06:09,313 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-10-11 18:06:09,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 159 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2024-10-11 18:06:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 18:06:09,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2024-10-11 18:06:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 71 states have internal predecessors, (80), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:06:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-10-11 18:06:09,316 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 25 [2024-10-11 18:06:09,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:06:09,316 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-10-11 18:06:09,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 18:06:09,316 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-10-11 18:06:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 18:06:09,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:06:09,316 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:06:09,323 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 (28)] Ended with exit code 0 [2024-10-11 18:06:09,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-10-11 18:06:09,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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=3,29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-10-11 18:06:09,717 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting f19_undoErr4ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:06:09,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:06:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash -789997062, now seen corresponding path program 1 times [2024-10-11 18:06:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:06:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71106981] [2024-10-11 18:06:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:06:09,718 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 18:06:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:06:09,720 INFO L229 MonitoredProcess]: Starting monitored process 30 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 18:06:09,721 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 (30)] Waiting until timeout for monitored process [2024-10-11 18:06:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:06:09,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:06:09,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:06:09,905 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 18:06:09,922 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 18:06:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 18:06:10,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:06:10,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:06:10,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71106981] [2024-10-11 18:06:10,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71106981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:06:10,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:06:10,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 18:06:10,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772621361] [2024-10-11 18:06:10,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:06:10,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 18:06:10,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:06:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 18:06:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:06:10,039 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:06:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:06:10,295 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2024-10-11 18:06:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:06:10,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-10-11 18:06:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:06:10,296 INFO L225 Difference]: With dead ends: 81 [2024-10-11 18:06:10,296 INFO L226 Difference]: Without dead ends: 81 [2024-10-11 18:06:10,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:06:10,297 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:06:10,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 18:06:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-11 18:06:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-11 18:06:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 69 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-11 18:06:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2024-10-11 18:06:10,300 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 26 [2024-10-11 18:06:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:06:10,300 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2024-10-11 18:06:10,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:06:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2024-10-11 18:06:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 18:06:10,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:06:10,301 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:06:10,306 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 (30)] Ended with exit code 0 [2024-10-11 18:06:10,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 18:06:10,502 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting f19_undoErr4ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:06:10,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:06:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1183024072, now seen corresponding path program 1 times [2024-10-11 18:06:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:06:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585104524] [2024-10-11 18:06:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:06:10,503 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 18:06:10,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:06:10,504 INFO L229 MonitoredProcess]: Starting monitored process 31 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 18:06:10,505 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 (31)] Waiting until timeout for monitored process [2024-10-11 18:06:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:06:10,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 18:06:10,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:06:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 18:06:10,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:06:10,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 18:06:10,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585104524] [2024-10-11 18:06:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585104524] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:06:10,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:06:10,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 18:06:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494081039] [2024-10-11 18:06:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:06:10,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:06:10,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 18:06:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:06:10,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 18:06:10,640 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:06:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:06:10,770 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2024-10-11 18:06:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:06:10,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-10-11 18:06:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:06:10,771 INFO L225 Difference]: With dead ends: 74 [2024-10-11 18:06:10,771 INFO L226 Difference]: Without dead ends: 74 [2024-10-11 18:06:10,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:06:10,772 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 12 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:06:10,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:06:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-11 18:06:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-10-11 18:06:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 63 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-11 18:06:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2024-10-11 18:06:10,777 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 26 [2024-10-11 18:06:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:06:10,777 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2024-10-11 18:06:10,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 18:06:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2024-10-11 18:06:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-11 18:06:10,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:06:10,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:06:10,783 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 (31)] Ended with exit code 0 [2024-10-11 18:06:10,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 18:06:10,979 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [f19_undoErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE (and 21 more)] === [2024-10-11 18:06:10,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:06:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1306980249, now seen corresponding path program 1 times [2024-10-11 18:06:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 18:06:10,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321423171] [2024-10-11 18:06:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:06:10,980 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 18:06:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 18:06:10,981 INFO L229 MonitoredProcess]: Starting monitored process 32 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 18:06:10,982 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 (32)] Waiting until timeout for monitored process [2024-10-11 18:06:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:06:11,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 18:06:11,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:06:11,153 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 18:06:11,311 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 18:06:11,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-10-11 18:06:11,627 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-10-11 18:06:11,811 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-10-11 18:06:11,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-10-11 18:06:11,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-11 18:06:12,171 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 18:06:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-10-11 18:06:12,255 INFO L311 TraceCheckSpWp]: Computing backward predicates...