./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 201afb0304f75aafd17af3d762c0926f4ea0271883b75624cd621490900e7673 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:24:57,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:24:57,651 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-10-24 18:24:57,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:24:57,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:24:57,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:24:57,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:24:57,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:24:57,688 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:24:57,689 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:24:57,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:24:57,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:24:57,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:24:57,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:24:57,691 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:24:57,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:24:57,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:24:57,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:24:57,695 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:24:57,695 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:24:57,696 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:24:57,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:24:57,701 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:24:57,701 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:24:57,701 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:24:57,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:24:57,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:24:57,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:24:57,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:24:57,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:24:57,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:24:57,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:24:57,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:24:57,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 18:24:57,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 18:24:57,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:24:57,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:24:57,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:24:57,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:24:57,706 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 201afb0304f75aafd17af3d762c0926f4ea0271883b75624cd621490900e7673 [2024-10-24 18:24:57,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:24:57,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:24:57,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:24:57,977 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:24:57,977 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:24:57,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2024-10-24 18:24:59,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:24:59,868 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:24:59,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2024-10-24 18:24:59,904 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f19522f5/a704ed69540c467397b100e3e7054a17/FLAGd74273a56 [2024-10-24 18:24:59,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f19522f5/a704ed69540c467397b100e3e7054a17 [2024-10-24 18:24:59,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:24:59,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:24:59,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:24:59,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:24:59,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:24:59,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:24:59" (1/1) ... [2024-10-24 18:24:59,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777f97d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:24:59, skipping insertion in model container [2024-10-24 18:24:59,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:24:59" (1/1) ... [2024-10-24 18:25:00,062 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:25:00,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:25:00,905 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) [2024-10-24 18:25:00,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e15b07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:00, skipping insertion in model container [2024-10-24 18:25:00,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:25:00,907 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 18:25:00,908 INFO L158 Benchmark]: Toolchain (without parser) took 968.73ms. Allocated memory is still 192.9MB. Free memory was 159.6MB in the beginning and 126.9MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-10-24 18:25:00,909 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory was 104.2MB in the beginning and 104.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 18:25:00,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 966.95ms. Allocated memory is still 192.9MB. Free memory was 159.6MB in the beginning and 126.9MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-10-24 18:25:00,910 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory was 104.2MB in the beginning and 104.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 966.95ms. Allocated memory is still 192.9MB. Free memory was 159.6MB in the beginning and 126.9MB in the end (delta: 32.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2646]: 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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 201afb0304f75aafd17af3d762c0926f4ea0271883b75624cd621490900e7673 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 18:25:02,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 18:25:02,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-10-24 18:25:02,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 18:25:02,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 18:25:03,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 18:25:03,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 18:25:03,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 18:25:03,012 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 18:25:03,012 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 18:25:03,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 18:25:03,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 18:25:03,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 18:25:03,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 18:25:03,015 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 18:25:03,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 18:25:03,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 18:25:03,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 18:25:03,016 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 18:25:03,016 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 18:25:03,016 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 18:25:03,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 18:25:03,020 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 18:25:03,020 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 18:25:03,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 18:25:03,020 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 18:25:03,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 18:25:03,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 18:25:03,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 18:25:03,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 18:25:03,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 18:25:03,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 18:25:03,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:25:03,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 18:25:03,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 18:25:03,023 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 18:25:03,024 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 201afb0304f75aafd17af3d762c0926f4ea0271883b75624cd621490900e7673 [2024-10-24 18:25:03,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 18:25:03,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 18:25:03,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 18:25:03,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 18:25:03,366 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 18:25:03,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2024-10-24 18:25:04,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 18:25:05,240 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 18:25:05,243 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/sleep-1.i [2024-10-24 18:25:05,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7108646/d2af5e5d20e6402f8cacdea81ac9633b/FLAG26eaaabc5 [2024-10-24 18:25:05,289 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7108646/d2af5e5d20e6402f8cacdea81ac9633b [2024-10-24 18:25:05,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 18:25:05,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 18:25:05,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 18:25:05,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 18:25:05,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 18:25:05,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:05" (1/1) ... [2024-10-24 18:25:05,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eef61e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05, skipping insertion in model container [2024-10-24 18:25:05,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:05" (1/1) ... [2024-10-24 18:25:05,359 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:25:06,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:25:06,490 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 18:25:06,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 18:25:06,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:25:06,629 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 18:25:06,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 18:25:07,116 INFO L204 MainTranslator]: Completed translation [2024-10-24 18:25:07,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07 WrapperNode [2024-10-24 18:25:07,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 18:25:07,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 18:25:07,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 18:25:07,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 18:25:07,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,348 INFO L138 Inliner]: procedures = 647, calls = 234, calls flagged for inlining = 18, calls inlined = 16, statements flattened = 746 [2024-10-24 18:25:07,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 18:25:07,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 18:25:07,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 18:25:07,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 18:25:07,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,440 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-10-24 18:25:07,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 18:25:07,603 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 18:25:07,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 18:25:07,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 18:25:07,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2024-10-24 18:25:07,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 18:25:07,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 18:25:07,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 18:25:07,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 18:25:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 18:25:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-10-24 18:25:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-10-24 18:25:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2024-10-24 18:25:07,717 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2024-10-24 18:25:07,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 18:25:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 18:25:07,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-24 18:25:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2024-10-24 18:25:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2024-10-24 18:25:07,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2024-10-24 18:25:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2024-10-24 18:25:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 18:25:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 18:25:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-10-24 18:25:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2024-10-24 18:25:07,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2024-10-24 18:25:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2024-10-24 18:25:07,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-10-24 18:25:07,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-10-24 18:25:07,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-10-24 18:25:07,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 18:25:07,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 18:25:07,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 18:25:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-24 18:25:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2024-10-24 18:25:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2024-10-24 18:25:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-10-24 18:25:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2024-10-24 18:25:07,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2024-10-24 18:25:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2024-10-24 18:25:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2024-10-24 18:25:07,723 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2024-10-24 18:25:07,723 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2024-10-24 18:25:08,137 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 18:25:08,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 18:25:15,761 INFO L? ?]: Removed 606 outVars from TransFormulas that were not future-live. [2024-10-24 18:25:15,761 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 18:25:15,833 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 18:25:15,833 INFO L314 CfgBuilder]: Removed 13 assume(true) statements. [2024-10-24 18:25:15,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:15 BoogieIcfgContainer [2024-10-24 18:25:15,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 18:25:15,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 18:25:15,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 18:25:15,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 18:25:15,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:25:05" (1/3) ... [2024-10-24 18:25:15,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b968f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:15, skipping insertion in model container [2024-10-24 18:25:15,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (2/3) ... [2024-10-24 18:25:15,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b968f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:15, skipping insertion in model container [2024-10-24 18:25:15,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:15" (3/3) ... [2024-10-24 18:25:15,840 INFO L112 eAbstractionObserver]: Analyzing ICFG sleep-1.i [2024-10-24 18:25:15,852 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 18:25:15,853 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 232 error locations. [2024-10-24 18:25:15,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 18:25:15,920 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;@46545f1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 18:25:15,921 INFO L334 AbstractCegarLoop]: Starting to check reachability of 232 error locations. [2024-10-24 18:25:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 489 states, 238 states have (on average 2.2521008403361344) internal successors, (536), 470 states have internal predecessors, (536), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:25:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-24 18:25:15,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:15,932 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-24 18:25:15,932 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:15,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 31109, now seen corresponding path program 1 times [2024-10-24 18:25:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737334658] [2024-10-24 18:25:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:25:15,948 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 [2024-10-24 18:25:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:15,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/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) [2024-10-24 18:25:15,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:25:16,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 18:25:16,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:16,407 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 [2024-10-24 18:25:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:16,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:25:16,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:16,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737334658] [2024-10-24 18:25:16,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737334658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:25:16,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:25:16,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 18:25:16,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255095463] [2024-10-24 18:25:16,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:25:16,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:25:16,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:16,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:25:16,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:25:16,526 INFO L87 Difference]: Start difference. First operand has 489 states, 238 states have (on average 2.2521008403361344) internal successors, (536), 470 states have internal predecessors, (536), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:25:19,415 INFO L93 Difference]: Finished difference Result 507 states and 563 transitions. [2024-10-24 18:25:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:25:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-24 18:25:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:25:19,443 INFO L225 Difference]: With dead ends: 507 [2024-10-24 18:25:19,444 INFO L226 Difference]: Without dead ends: 506 [2024-10-24 18:25:19,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:25:19,453 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 81 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-24 18:25:19,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 674 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-24 18:25:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-10-24 18:25:19,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 465. [2024-10-24 18:25:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 224 states have (on average 2.1964285714285716) internal successors, (492), 449 states have internal predecessors, (492), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 18:25:19,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 516 transitions. [2024-10-24 18:25:19,546 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 516 transitions. Word has length 2 [2024-10-24 18:25:19,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:25:19,547 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 516 transitions. [2024-10-24 18:25:19,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 516 transitions. [2024-10-24 18:25:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-24 18:25:19,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:19,547 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-24 18:25:19,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 18:25:19,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/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 [2024-10-24 18:25:19,749 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:19,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash 31110, now seen corresponding path program 1 times [2024-10-24 18:25:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428363702] [2024-10-24 18:25:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:25:19,753 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 [2024-10-24 18:25:19,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:19,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/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) [2024-10-24 18:25:19,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:25:19,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:25:19,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:19,976 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 [2024-10-24 18:25:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:20,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:25:20,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428363702] [2024-10-24 18:25:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428363702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:25:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:25:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 18:25:20,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298058822] [2024-10-24 18:25:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:25:20,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:25:20,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:20,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:25:20,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:25:20,017 INFO L87 Difference]: Start difference. First operand 465 states and 516 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:25:22,934 INFO L93 Difference]: Finished difference Result 464 states and 515 transitions. [2024-10-24 18:25:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:25:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-24 18:25:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:25:22,937 INFO L225 Difference]: With dead ends: 464 [2024-10-24 18:25:22,938 INFO L226 Difference]: Without dead ends: 464 [2024-10-24 18:25:22,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:25:22,939 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 8 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 18:25:22,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 737 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 18:25:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-10-24 18:25:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2024-10-24 18:25:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 224 states have (on average 2.1919642857142856) internal successors, (491), 448 states have internal predecessors, (491), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 18:25:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 515 transitions. [2024-10-24 18:25:22,954 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 515 transitions. Word has length 2 [2024-10-24 18:25:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:25:22,954 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 515 transitions. [2024-10-24 18:25:22,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 515 transitions. [2024-10-24 18:25:22,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-24 18:25:22,955 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:22,955 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-24 18:25:22,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:23,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/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 [2024-10-24 18:25:23,156 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:23,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash 30437038, now seen corresponding path program 1 times [2024-10-24 18:25:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593005042] [2024-10-24 18:25:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:25:23,161 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 [2024-10-24 18:25:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:23,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/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) [2024-10-24 18:25:23,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:25:23,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:25:23,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:23,411 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 [2024-10-24 18:25:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:23,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:25:23,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593005042] [2024-10-24 18:25:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593005042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:25:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:25:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:25:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745722593] [2024-10-24 18:25:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:25:23,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:25:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:25:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:25:23,568 INFO L87 Difference]: Start difference. First operand 464 states and 515 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:25:26,514 INFO L93 Difference]: Finished difference Result 466 states and 517 transitions. [2024-10-24 18:25:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 18:25:26,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-24 18:25:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:25:26,518 INFO L225 Difference]: With dead ends: 466 [2024-10-24 18:25:26,518 INFO L226 Difference]: Without dead ends: 466 [2024-10-24 18:25:26,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:25:26,521 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 8 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 18:25:26,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 737 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 18:25:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-10-24 18:25:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2024-10-24 18:25:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 226 states have (on average 2.1814159292035398) internal successors, (493), 450 states have internal predecessors, (493), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 18:25:26,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 517 transitions. [2024-10-24 18:25:26,549 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 517 transitions. Word has length 4 [2024-10-24 18:25:26,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:25:26,549 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 517 transitions. [2024-10-24 18:25:26,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 517 transitions. [2024-10-24 18:25:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-24 18:25:26,552 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:26,552 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 18:25:26,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:26,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/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 [2024-10-24 18:25:26,753 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:26,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash -814242031, now seen corresponding path program 1 times [2024-10-24 18:25:26,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:26,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799646764] [2024-10-24 18:25:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:25:26,756 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 [2024-10-24 18:25:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:26,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/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) [2024-10-24 18:25:26,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:25:26,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:25:26,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:26,937 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 [2024-10-24 18:25:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:27,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:25:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:27,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799646764] [2024-10-24 18:25:27,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799646764] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:25:27,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:25:27,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 18:25:27,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224572992] [2024-10-24 18:25:27,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:25:27,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 18:25:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 18:25:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 18:25:27,700 INFO L87 Difference]: Start difference. First operand 466 states and 517 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:25:40,995 INFO L93 Difference]: Finished difference Result 468 states and 519 transitions. [2024-10-24 18:25:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 18:25:40,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-24 18:25:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:25:41,000 INFO L225 Difference]: With dead ends: 468 [2024-10-24 18:25:41,001 INFO L226 Difference]: Without dead ends: 468 [2024-10-24 18:25:41,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-10-24 18:25:41,002 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 9 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-10-24 18:25:41,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1568 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-10-24 18:25:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-10-24 18:25:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2024-10-24 18:25:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 229 states have (on average 2.1615720524017465) internal successors, (495), 452 states have internal predecessors, (495), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 18:25:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 519 transitions. [2024-10-24 18:25:41,016 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 519 transitions. Word has length 6 [2024-10-24 18:25:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:25:41,016 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 519 transitions. [2024-10-24 18:25:41,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 519 transitions. [2024-10-24 18:25:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 18:25:41,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:41,017 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2024-10-24 18:25:41,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-24 18:25:41,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/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 [2024-10-24 18:25:41,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:41,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash 287542298, now seen corresponding path program 1 times [2024-10-24 18:25:41,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:41,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921318849] [2024-10-24 18:25:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:25:41,219 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 [2024-10-24 18:25:41,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:41,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/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) [2024-10-24 18:25:41,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:25:41,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:25:41,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:41,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:25:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:41,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:41,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921318849] [2024-10-24 18:25:41,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921318849] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:25:41,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:25:41,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-10-24 18:25:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493573022] [2024-10-24 18:25:41,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:25:41,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 18:25:41,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 18:25:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-24 18:25:41,910 INFO L87 Difference]: Start difference. First operand 468 states and 519 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:45,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:25:45,287 INFO L93 Difference]: Finished difference Result 478 states and 529 transitions. [2024-10-24 18:25:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 18:25:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-24 18:25:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:25:45,291 INFO L225 Difference]: With dead ends: 478 [2024-10-24 18:25:45,291 INFO L226 Difference]: Without dead ends: 478 [2024-10-24 18:25:45,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-10-24 18:25:45,291 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 5 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-24 18:25:45,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2302 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-24 18:25:45,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-10-24 18:25:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2024-10-24 18:25:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 239 states have (on average 2.1129707112970713) internal successors, (505), 462 states have internal predecessors, (505), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-24 18:25:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 529 transitions. [2024-10-24 18:25:45,302 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 529 transitions. Word has length 11 [2024-10-24 18:25:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:25:45,302 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 529 transitions. [2024-10-24 18:25:45,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 529 transitions. [2024-10-24 18:25:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 18:25:45,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:45,303 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2024-10-24 18:25:45,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:45,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/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 [2024-10-24 18:25:45,504 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:45,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1924941515, now seen corresponding path program 2 times [2024-10-24 18:25:45,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:45,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989567333] [2024-10-24 18:25:45,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 18:25:45,506 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 [2024-10-24 18:25:45,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:45,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/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) [2024-10-24 18:25:45,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:45,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 18:25:45,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 18:25:45,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 18:25:45,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:45,871 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 18:25:45,871 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 [2024-10-24 18:25:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 18:25:46,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:25:46,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989567333] [2024-10-24 18:25:46,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989567333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:25:46,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:25:46,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 18:25:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859197230] [2024-10-24 18:25:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:25:46,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:25:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:46,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:25:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:25:46,674 INFO L87 Difference]: Start difference. First operand 478 states and 529 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:25:52,343 INFO L93 Difference]: Finished difference Result 779 states and 868 transitions. [2024-10-24 18:25:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:25:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-24 18:25:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:25:52,347 INFO L225 Difference]: With dead ends: 779 [2024-10-24 18:25:52,347 INFO L226 Difference]: Without dead ends: 779 [2024-10-24 18:25:52,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:25:52,348 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 361 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:25:52,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 604 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-10-24 18:25:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-10-24 18:25:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 562. [2024-10-24 18:25:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 318 states have (on average 2.150943396226415) internal successors, (684), 543 states have internal predecessors, (684), 18 states have call successors, (18), 7 states have call predecessors, (18), 4 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:25:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 716 transitions. [2024-10-24 18:25:52,361 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 716 transitions. Word has length 21 [2024-10-24 18:25:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:25:52,361 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 716 transitions. [2024-10-24 18:25:52,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:25:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 716 transitions. [2024-10-24 18:25:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 18:25:52,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:25:52,362 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2024-10-24 18:25:52,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 18:25:52,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/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 [2024-10-24 18:25:52,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:25:52,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:25:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1924941516, now seen corresponding path program 1 times [2024-10-24 18:25:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:25:52,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173658984] [2024-10-24 18:25:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:25:52,565 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 [2024-10-24 18:25:52,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:25:52,568 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/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) [2024-10-24 18:25:52,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:25:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:25:52,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 18:25:52,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:25:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:53,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 18:25:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 18:25:54,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:25:54,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173658984] [2024-10-24 18:25:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173658984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 18:25:54,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 18:25:54,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-10-24 18:25:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534764877] [2024-10-24 18:25:54,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 18:25:54,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-24 18:25:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:25:54,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-24 18:25:54,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-10-24 18:25:54,016 INFO L87 Difference]: Start difference. First operand 562 states and 716 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:26:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:26:00,685 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2024-10-24 18:26:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 18:26:00,691 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-24 18:26:00,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:26:00,693 INFO L225 Difference]: With dead ends: 566 [2024-10-24 18:26:00,693 INFO L226 Difference]: Without dead ends: 566 [2024-10-24 18:26:00,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-10-24 18:26:00,694 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 3 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-10-24 18:26:00,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5510 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-10-24 18:26:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-10-24 18:26:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-10-24 18:26:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 322 states have (on average 2.1366459627329193) internal successors, (688), 547 states have internal predecessors, (688), 18 states have call successors, (18), 7 states have call predecessors, (18), 4 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:26:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 720 transitions. [2024-10-24 18:26:00,712 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 720 transitions. Word has length 21 [2024-10-24 18:26:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:26:00,713 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 720 transitions. [2024-10-24 18:26:00,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:26:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 720 transitions. [2024-10-24 18:26:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 18:26:00,713 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:26:00,714 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-10-24 18:26:00,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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)] Forceful destruction successful, exit code 0 [2024-10-24 18:26:00,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/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 [2024-10-24 18:26:00,916 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:26:00,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:26:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1689636986, now seen corresponding path program 2 times [2024-10-24 18:26:00,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:26:00,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895400284] [2024-10-24 18:26:00,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 18:26:00,918 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 [2024-10-24 18:26:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:26:00,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/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) [2024-10-24 18:26:00,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:26:01,142 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 18:26:01,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 18:26:01,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 18:26:01,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:26:01,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 18:26:01,191 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 [2024-10-24 18:26:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 18:26:01,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:26:01,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:26:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895400284] [2024-10-24 18:26:01,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895400284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:26:01,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:26:01,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 18:26:01,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499249494] [2024-10-24 18:26:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:26:01,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:26:01,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:26:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:26:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:26:01,957 INFO L87 Difference]: Start difference. First operand 566 states and 720 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:26:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:26:04,914 INFO L93 Difference]: Finished difference Result 569 states and 722 transitions. [2024-10-24 18:26:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:26:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-24 18:26:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:26:04,918 INFO L225 Difference]: With dead ends: 569 [2024-10-24 18:26:04,918 INFO L226 Difference]: Without dead ends: 569 [2024-10-24 18:26:04,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:26:04,919 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 6 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-24 18:26:04,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 743 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-24 18:26:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-10-24 18:26:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2024-10-24 18:26:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 325 states have (on average 2.123076923076923) internal successors, (690), 549 states have internal predecessors, (690), 18 states have call successors, (18), 8 states have call predecessors, (18), 5 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:26:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 722 transitions. [2024-10-24 18:26:04,930 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 722 transitions. Word has length 25 [2024-10-24 18:26:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:26:04,930 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 722 transitions. [2024-10-24 18:26:04,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 18:26:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 722 transitions. [2024-10-24 18:26:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 18:26:04,931 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:26:04,931 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:26:04,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:26:05,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/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 [2024-10-24 18:26:05,136 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:26:05,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:26:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1650113547, now seen corresponding path program 1 times [2024-10-24 18:26:05,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:26:05,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357711295] [2024-10-24 18:26:05,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:26:05,137 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 [2024-10-24 18:26:05,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:26:05,140 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/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) [2024-10-24 18:26:05,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:26:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:26:05,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 18:26:05,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:26:06,054 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-24 18:26:06,054 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 1 case distinctions, treesize of input 19 treesize of output 21 [2024-10-24 18:26:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 18:26:06,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:26:06,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:26:06,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357711295] [2024-10-24 18:26:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357711295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:26:06,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:26:06,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 18:26:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215907347] [2024-10-24 18:26:06,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:26:06,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 18:26:06,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:26:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 18:26:06,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:26:06,208 INFO L87 Difference]: Start difference. First operand 569 states and 722 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2024-10-24 18:26:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:26:14,176 INFO L93 Difference]: Finished difference Result 570 states and 724 transitions. [2024-10-24 18:26:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 18:26:14,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 32 [2024-10-24 18:26:14,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:26:14,180 INFO L225 Difference]: With dead ends: 570 [2024-10-24 18:26:14,181 INFO L226 Difference]: Without dead ends: 570 [2024-10-24 18:26:14,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 18:26:14,181 INFO L432 NwaCegarLoop]: 447 mSDtfsCounter, 173 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-10-24 18:26:14,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1898 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-10-24 18:26:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-10-24 18:26:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 568. [2024-10-24 18:26:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 325 states have (on average 2.12) internal successors, (689), 548 states have internal predecessors, (689), 18 states have call successors, (18), 8 states have call predecessors, (18), 5 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:26:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 721 transitions. [2024-10-24 18:26:14,192 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 721 transitions. Word has length 32 [2024-10-24 18:26:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:26:14,192 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 721 transitions. [2024-10-24 18:26:14,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2024-10-24 18:26:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 721 transitions. [2024-10-24 18:26:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 18:26:14,193 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:26:14,193 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:26:14,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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)] Forceful destruction successful, exit code 0 [2024-10-24 18:26:14,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/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 [2024-10-24 18:26:14,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:26:14,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:26:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1650113546, now seen corresponding path program 1 times [2024-10-24 18:26:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:26:14,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443346597] [2024-10-24 18:26:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:26:14,403 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 [2024-10-24 18:26:14,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:26:14,406 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/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) [2024-10-24 18:26:14,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:26:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:26:15,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 18:26:15,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:26:15,216 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 18:26:15,217 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 1 case distinctions, treesize of input 9 treesize of output 15 [2024-10-24 18:26:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 18:26:15,270 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:26:15,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:26:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443346597] [2024-10-24 18:26:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443346597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:26:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:26:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 18:26:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490625911] [2024-10-24 18:26:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:26:15,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 18:26:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:26:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 18:26:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:26:15,271 INFO L87 Difference]: Start difference. First operand 568 states and 721 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-10-24 18:26:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:26:20,355 INFO L93 Difference]: Finished difference Result 585 states and 716 transitions. [2024-10-24 18:26:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 18:26:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 32 [2024-10-24 18:26:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:26:20,359 INFO L225 Difference]: With dead ends: 585 [2024-10-24 18:26:20,359 INFO L226 Difference]: Without dead ends: 585 [2024-10-24 18:26:20,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 18:26:20,360 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 63 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-10-24 18:26:20,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 677 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-10-24 18:26:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-10-24 18:26:20,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 563. [2024-10-24 18:26:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 325 states have (on average 2.1046153846153848) internal successors, (684), 543 states have internal predecessors, (684), 18 states have call successors, (18), 8 states have call predecessors, (18), 5 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:26:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 716 transitions. [2024-10-24 18:26:20,371 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 716 transitions. Word has length 32 [2024-10-24 18:26:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:26:20,371 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 716 transitions. [2024-10-24 18:26:20,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-10-24 18:26:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 716 transitions. [2024-10-24 18:26:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 18:26:20,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:26:20,372 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:26:20,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:26:20,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/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 [2024-10-24 18:26:20,573 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:26:20,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:26:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 916718986, now seen corresponding path program 1 times [2024-10-24 18:26:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:26:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435088393] [2024-10-24 18:26:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:26:20,575 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 [2024-10-24 18:26:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:26:20,578 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/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) [2024-10-24 18:26:20,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 (12)] Waiting until timeout for monitored process [2024-10-24 18:26:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:26:21,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 18:26:21,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:26:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 18:26:21,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-10-24 18:26:21,365 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 10 treesize of output 8 [2024-10-24 18:26:21,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 18:26:21,776 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 19 treesize of output 14 [2024-10-24 18:26:21,859 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-24 18:26:21,860 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 [2024-10-24 18:26:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 18:26:22,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:26:22,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:26:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435088393] [2024-10-24 18:26:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435088393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:26:22,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:26:22,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 18:26:22,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314905072] [2024-10-24 18:26:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:26:22,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 18:26:22,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:26:22,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 18:26:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 18:26:22,039 INFO L87 Difference]: Start difference. First operand 563 states and 716 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-10-24 18:26:33,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 18:26:33,711 INFO L93 Difference]: Finished difference Result 614 states and 773 transitions. [2024-10-24 18:26:33,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 18:26:33,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 34 [2024-10-24 18:26:33,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 18:26:33,714 INFO L225 Difference]: With dead ends: 614 [2024-10-24 18:26:33,715 INFO L226 Difference]: Without dead ends: 614 [2024-10-24 18:26:33,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-24 18:26:33,715 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 276 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-10-24 18:26:33,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 2100 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-10-24 18:26:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-10-24 18:26:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 588. [2024-10-24 18:26:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 350 states have (on average 2.0828571428571427) internal successors, (729), 568 states have internal predecessors, (729), 18 states have call successors, (18), 8 states have call predecessors, (18), 5 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-24 18:26:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 761 transitions. [2024-10-24 18:26:33,725 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 761 transitions. Word has length 34 [2024-10-24 18:26:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 18:26:33,726 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 761 transitions. [2024-10-24 18:26:33,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2024-10-24 18:26:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 761 transitions. [2024-10-24 18:26:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-24 18:26:33,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 18:26:33,727 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 18:26:33,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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 (12)] Ended with exit code 0 [2024-10-24 18:26:33,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/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 [2024-10-24 18:26:33,928 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 229 more)] === [2024-10-24 18:26:33,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 18:26:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash 499176804, now seen corresponding path program 1 times [2024-10-24 18:26:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 18:26:33,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100560902] [2024-10-24 18:26:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 18:26:33,930 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 [2024-10-24 18:26:33,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 18:26:33,932 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/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) [2024-10-24 18:26:33,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/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 [2024-10-24 18:26:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 18:26:34,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 18:26:34,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 18:26:34,655 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 [2024-10-24 18:26:34,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 18:26:34,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-10-24 18:26:34,760 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 18:26:34,760 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 [2024-10-24 18:26:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-24 18:26:34,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 18:26:34,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 18:26:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100560902] [2024-10-24 18:26:34,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100560902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 18:26:34,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 18:26:34,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 18:26:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928194349] [2024-10-24 18:26:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 18:26:34,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 18:26:34,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 18:26:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 18:26:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 18:26:34,853 INFO L87 Difference]: Start difference. First operand 588 states and 761 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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)