./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 07:43:30,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 07:43:30,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 07:43:30,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 07:43:30,140 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 07:43:30,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 07:43:30,158 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 07:43:30,158 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 07:43:30,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 07:43:30,158 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 07:43:30,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 07:43:30,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 07:43:30,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 07:43:30,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 07:43:30,158 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 07:43:30,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 07:43:30,159 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 07:43:30,160 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:43:30,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 07:43:30,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 07:43:30,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 07:43:30,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 07:43:30,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 07:43:30,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 07:43:30,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 07:43:30,161 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2025-03-04 07:43:30,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 07:43:30,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 07:43:30,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 07:43:30,420 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 07:43:30,421 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 07:43:30,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-03-04 07:43:31,592 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f9ce608/57cd1394e1e446c499340b543197301f/FLAG6f5d66c33 [2025-03-04 07:43:31,848 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 07:43:31,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-03-04 07:43:31,865 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f9ce608/57cd1394e1e446c499340b543197301f/FLAG6f5d66c33 [2025-03-04 07:43:31,880 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61f9ce608/57cd1394e1e446c499340b543197301f [2025-03-04 07:43:31,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 07:43:31,883 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 07:43:31,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 07:43:31,884 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 07:43:31,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 07:43:31,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:43:31" (1/1) ... [2025-03-04 07:43:31,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc23b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:31, skipping insertion in model container [2025-03-04 07:43:31,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:43:31" (1/1) ... [2025-03-04 07:43:31,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:43:32,147 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:32,180 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:32,184 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:32,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:32,198 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-04 07:43:32,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71cdf160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:32, skipping insertion in model container [2025-03-04 07:43:32,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 07:43:32,199 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 07:43:32,200 INFO L158 Benchmark]: Toolchain (without parser) took 316.81ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 98.1MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 07:43:32,202 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 201.3MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 07:43:32,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.30ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 98.1MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 07:43:32,203 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 201.3MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.30ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 98.1MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 07:43:34,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 07:43:34,115 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 07:43:34,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 07:43:34,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 07:43:34,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 07:43:34,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 07:43:34,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 07:43:34,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 07:43:34,155 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 07:43:34,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 07:43:34,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 07:43:34,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 07:43:34,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 07:43:34,157 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 07:43:34,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 07:43:34,157 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 07:43:34,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 07:43:34,158 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 07:43:34,159 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 07:43:34,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:43:34,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 07:43:34,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 07:43:34,160 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 07:43:34,160 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 07:43:34,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 07:43:34,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 07:43:34,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 07:43:34,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 07:43:34,161 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2025-03-04 07:43:34,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 07:43:34,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 07:43:34,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 07:43:34,413 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 07:43:34,413 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 07:43:34,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-03-04 07:43:35,699 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dacbd8c/b25203ccac0f4eec82c8834e28a2ff23/FLAG8ed68a6d6 [2025-03-04 07:43:35,927 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 07:43:35,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2025-03-04 07:43:35,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dacbd8c/b25203ccac0f4eec82c8834e28a2ff23/FLAG8ed68a6d6 [2025-03-04 07:43:35,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7dacbd8c/b25203ccac0f4eec82c8834e28a2ff23 [2025-03-04 07:43:35,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 07:43:35,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 07:43:35,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 07:43:35,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 07:43:35,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 07:43:35,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:43:35" (1/1) ... [2025-03-04 07:43:35,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b13721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:35, skipping insertion in model container [2025-03-04 07:43:35,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:43:35" (1/1) ... [2025-03-04 07:43:35,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:43:36,227 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:36,270 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:36,273 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:36,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:36,294 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 07:43:36,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:43:36,337 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:36,353 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:36,358 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:36,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:36,372 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 07:43:36,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:36,499 INFO L204 MainTranslator]: Completed translation [2025-03-04 07:43:36,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36 WrapperNode [2025-03-04 07:43:36,500 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 07:43:36,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 07:43:36,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 07:43:36,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 07:43:36,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,542 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 73 [2025-03-04 07:43:36,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 07:43:36,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 07:43:36,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 07:43:36,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 07:43:36,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,555 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,571 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-04 07:43:36,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 07:43:36,591 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 07:43:36,591 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 07:43:36,592 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 07:43:36,592 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (1/1) ... [2025-03-04 07:43:36,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:43:36,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:36,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 07:43:36,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 07:43:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-03-04 07:43:36,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-03-04 07:43:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 07:43:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 07:43:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 07:43:36,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 07:43:36,740 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 07:43:36,742 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 07:43:36,769 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L527: havoc #t~malloc12.base, #t~malloc12.offset; [2025-03-04 07:43:36,945 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2025-03-04 07:43:36,945 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 07:43:36,953 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 07:43:36,953 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 07:43:36,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:43:36 BoogieIcfgContainer [2025-03-04 07:43:36,953 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 07:43:36,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 07:43:36,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 07:43:36,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 07:43:36,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 07:43:35" (1/3) ... [2025-03-04 07:43:36,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3da534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 07:43:36, skipping insertion in model container [2025-03-04 07:43:36,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:36" (2/3) ... [2025-03-04 07:43:36,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3da534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 07:43:36, skipping insertion in model container [2025-03-04 07:43:36,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:43:36" (3/3) ... [2025-03-04 07:43:36,960 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2025-03-04 07:43:36,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 07:43:36,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test17_2-1.i that has 2 procedures, 56 locations, 1 initial locations, 4 loop locations, and 18 error locations. [2025-03-04 07:43:37,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 07:43:37,015 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;@1a7062b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 07:43:37,016 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-04 07:43:37,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 52 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:43:37,022 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:37,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:37,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1441127009, now seen corresponding path program 1 times [2025-03-04 07:43:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:37,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932968595] [2025-03-04 07:43:37,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:37,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:37,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:37,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:37,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 07:43:37,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:43:37,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:43:37,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:37,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:37,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:43:37,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:37,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:37,158 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932968595] [2025-03-04 07:43:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932968595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:37,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:43:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700698461] [2025-03-04 07:43:37,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:37,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:43:37,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:37,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:43:37,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:37,178 INFO L87 Difference]: Start difference. First operand has 56 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 52 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:37,248 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2025-03-04 07:43:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:43:37,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-03-04 07:43:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:37,254 INFO L225 Difference]: With dead ends: 98 [2025-03-04 07:43:37,254 INFO L226 Difference]: Without dead ends: 96 [2025-03-04 07:43:37,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:37,259 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:37,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 201 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:43:37,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-04 07:43:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 58. [2025-03-04 07:43:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 53 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:43:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2025-03-04 07:43:37,292 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 11 [2025-03-04 07:43:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:37,294 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2025-03-04 07:43:37,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2025-03-04 07:43:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:43:37,295 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:37,295 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:37,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 07:43:37,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:37,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:37,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1441130498, now seen corresponding path program 1 times [2025-03-04 07:43:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735635513] [2025-03-04 07:43:37,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:37,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:37,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:37,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 07:43:37,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:43:37,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:43:37,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:37,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:37,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:43:37,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:37,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:37,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:37,604 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:37,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735635513] [2025-03-04 07:43:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735635513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:37,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 07:43:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858626107] [2025-03-04 07:43:37,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:37,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:43:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:37,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:43:37,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:37,606 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:37,749 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2025-03-04 07:43:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:43:37,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-03-04 07:43:37,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:37,751 INFO L225 Difference]: With dead ends: 89 [2025-03-04 07:43:37,751 INFO L226 Difference]: Without dead ends: 89 [2025-03-04 07:43:37,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:37,752 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 31 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:37,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 139 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-04 07:43:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2025-03-04 07:43:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 64 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:43:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2025-03-04 07:43:37,758 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 11 [2025-03-04 07:43:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:37,758 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2025-03-04 07:43:37,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2025-03-04 07:43:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:43:37,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:37,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:37,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 07:43:37,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:37,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:37,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1441130499, now seen corresponding path program 1 times [2025-03-04 07:43:37,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:37,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447078939] [2025-03-04 07:43:37,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:37,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:37,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:37,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 07:43:38,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:43:38,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:43:38,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:38,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:38,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-04 07:43:38,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:38,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:38,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:38,149 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447078939] [2025-03-04 07:43:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447078939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:38,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:38,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 07:43:38,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19695654] [2025-03-04 07:43:38,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:38,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 07:43:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:38,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 07:43:38,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 07:43:38,150 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:38,398 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2025-03-04 07:43:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 07:43:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 11 [2025-03-04 07:43:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:38,399 INFO L225 Difference]: With dead ends: 107 [2025-03-04 07:43:38,399 INFO L226 Difference]: Without dead ends: 107 [2025-03-04 07:43:38,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-04 07:43:38,399 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 70 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:38,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 397 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 07:43:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-03-04 07:43:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94. [2025-03-04 07:43:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.6666666666666667) internal successors, (120), 89 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:43:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2025-03-04 07:43:38,411 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 126 transitions. Word has length 11 [2025-03-04 07:43:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:38,412 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 126 transitions. [2025-03-04 07:43:38,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:38,412 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 126 transitions. [2025-03-04 07:43:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:43:38,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:38,412 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:38,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 07:43:38,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:38,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:38,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1966336606, now seen corresponding path program 1 times [2025-03-04 07:43:38,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:38,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524229204] [2025-03-04 07:43:38,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:38,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:38,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:38,616 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:38,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 07:43:38,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:43:38,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:43:38,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:38,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:38,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:43:38,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:38,682 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:38,682 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:38,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524229204] [2025-03-04 07:43:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524229204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 07:43:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456334843] [2025-03-04 07:43:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:38,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 07:43:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:38,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 07:43:38,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:43:38,684 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:38,759 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2025-03-04 07:43:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 07:43:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-03-04 07:43:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:38,761 INFO L225 Difference]: With dead ends: 136 [2025-03-04 07:43:38,761 INFO L226 Difference]: Without dead ends: 134 [2025-03-04 07:43:38,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:43:38,761 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:38,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 150 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-03-04 07:43:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2025-03-04 07:43:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.6527777777777777) internal successors, (119), 89 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:43:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2025-03-04 07:43:38,766 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 11 [2025-03-04 07:43:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:38,766 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2025-03-04 07:43:38,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2025-03-04 07:43:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:43:38,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:38,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:38,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 07:43:38,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:38,968 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:38,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1966333117, now seen corresponding path program 1 times [2025-03-04 07:43:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:38,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814416930] [2025-03-04 07:43:38,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:38,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:38,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:38,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:38,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 07:43:39,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:43:39,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:43:39,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:39,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:39,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 07:43:39,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:39,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:39,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:39,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814416930] [2025-03-04 07:43:39,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814416930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:39,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:39,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:43:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886093518] [2025-03-04 07:43:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:39,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:43:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:39,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:43:39,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:39,044 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:39,081 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2025-03-04 07:43:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:43:39,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2025-03-04 07:43:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:39,083 INFO L225 Difference]: With dead ends: 81 [2025-03-04 07:43:39,083 INFO L226 Difference]: Without dead ends: 79 [2025-03-04 07:43:39,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:39,084 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:39,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:43:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-03-04 07:43:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-03-04 07:43:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 75 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2025-03-04 07:43:39,091 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 11 [2025-03-04 07:43:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:39,091 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2025-03-04 07:43:39,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2025-03-04 07:43:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 07:43:39,091 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:39,091 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:39,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 07:43:39,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:39,292 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:39,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:39,292 INFO L85 PathProgramCache]: Analyzing trace with hash 225597074, now seen corresponding path program 1 times [2025-03-04 07:43:39,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:39,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898669231] [2025-03-04 07:43:39,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:39,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:39,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:39,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 07:43:39,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 07:43:39,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 07:43:39,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:39,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:39,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-04 07:43:39,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:39,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:39,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:39,913 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898669231] [2025-03-04 07:43:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898669231] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:43:39,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2025-03-04 07:43:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737152171] [2025-03-04 07:43:39,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:39,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 07:43:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:39,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 07:43:39,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-04 07:43:39,914 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:40,603 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2025-03-04 07:43:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 07:43:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2025-03-04 07:43:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:40,604 INFO L225 Difference]: With dead ends: 101 [2025-03-04 07:43:40,604 INFO L226 Difference]: Without dead ends: 101 [2025-03-04 07:43:40,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2025-03-04 07:43:40,605 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 157 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:40,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 433 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 07:43:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-04 07:43:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2025-03-04 07:43:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 84 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 112 transitions. [2025-03-04 07:43:40,608 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 112 transitions. Word has length 14 [2025-03-04 07:43:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:40,608 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 112 transitions. [2025-03-04 07:43:40,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2025-03-04 07:43:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-04 07:43:40,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:40,609 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:40,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 07:43:40,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:40,810 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:40,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash 620571458, now seen corresponding path program 1 times [2025-03-04 07:43:40,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:40,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871207997] [2025-03-04 07:43:40,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:40,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:40,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:40,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 07:43:40,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 07:43:40,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 07:43:40,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:40,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:40,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 07:43:40,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:40,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 07:43:40,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:40,910 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:40,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871207997] [2025-03-04 07:43:40,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871207997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:40,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:40,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:43:40,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134078545] [2025-03-04 07:43:40,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:40,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:43:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:40,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:43:40,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:40,911 INFO L87 Difference]: Start difference. First operand 88 states and 112 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:41,038 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2025-03-04 07:43:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:43:41,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 20 [2025-03-04 07:43:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:41,039 INFO L225 Difference]: With dead ends: 110 [2025-03-04 07:43:41,039 INFO L226 Difference]: Without dead ends: 110 [2025-03-04 07:43:41,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 07:43:41,040 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:41,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 157 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-03-04 07:43:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2025-03-04 07:43:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 88 states have internal predecessors, (114), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2025-03-04 07:43:41,044 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 20 [2025-03-04 07:43:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:41,044 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2025-03-04 07:43:41,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2025-03-04 07:43:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-04 07:43:41,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:41,045 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:41,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 07:43:41,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:41,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:41,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 620571459, now seen corresponding path program 1 times [2025-03-04 07:43:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:41,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637001713] [2025-03-04 07:43:41,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:41,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:41,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:41,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:41,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 07:43:41,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 07:43:41,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 07:43:41,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:41,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:41,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 07:43:41,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 07:43:41,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:41,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637001713] [2025-03-04 07:43:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637001713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:41,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:41,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 07:43:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648016509] [2025-03-04 07:43:41,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:41,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 07:43:41,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:41,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 07:43:41,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:43:41,311 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:41,347 INFO L93 Difference]: Finished difference Result 93 states and 116 transitions. [2025-03-04 07:43:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 07:43:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 20 [2025-03-04 07:43:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:41,348 INFO L225 Difference]: With dead ends: 93 [2025-03-04 07:43:41,348 INFO L226 Difference]: Without dead ends: 93 [2025-03-04 07:43:41,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:43:41,349 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:41,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 148 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:43:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-04 07:43:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2025-03-04 07:43:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 85 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:43:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2025-03-04 07:43:41,352 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 20 [2025-03-04 07:43:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:41,352 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2025-03-04 07:43:41,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2025-03-04 07:43:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-04 07:43:41,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:41,353 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:41,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-04 07:43:41,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:41,554 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:41,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:41,554 INFO L85 PathProgramCache]: Analyzing trace with hash -631589760, now seen corresponding path program 1 times [2025-03-04 07:43:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:41,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72157079] [2025-03-04 07:43:41,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:41,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:41,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:41,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 07:43:41,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 07:43:41,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 07:43:41,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:41,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:41,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 07:43:41,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:41,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 07:43:41,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:41,657 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72157079] [2025-03-04 07:43:41,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72157079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:41,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:41,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:43:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144374293] [2025-03-04 07:43:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:41,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:43:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:41,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:43:41,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:41,658 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:41,774 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2025-03-04 07:43:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:43:41,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 22 [2025-03-04 07:43:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:41,777 INFO L225 Difference]: With dead ends: 98 [2025-03-04 07:43:41,777 INFO L226 Difference]: Without dead ends: 98 [2025-03-04 07:43:41,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 07:43:41,777 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 26 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:41,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 161 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-04 07:43:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2025-03-04 07:43:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.536231884057971) internal successors, (106), 86 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:43:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2025-03-04 07:43:41,782 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 22 [2025-03-04 07:43:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:41,783 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2025-03-04 07:43:41,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2025-03-04 07:43:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-04 07:43:41,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:41,784 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:41,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 07:43:41,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:41,988 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:41,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash -631589759, now seen corresponding path program 1 times [2025-03-04 07:43:41,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:41,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931981066] [2025-03-04 07:43:41,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:41,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:41,990 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:41,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 07:43:42,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 07:43:42,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 07:43:42,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:42,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:42,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:43:42,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 07:43:42,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:42,092 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931981066] [2025-03-04 07:43:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931981066] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:42,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 07:43:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938586781] [2025-03-04 07:43:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:42,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 07:43:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:42,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 07:43:42,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:43:42,094 INFO L87 Difference]: Start difference. First operand 91 states and 114 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:42,131 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2025-03-04 07:43:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 07:43:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (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 22 [2025-03-04 07:43:42,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:42,133 INFO L225 Difference]: With dead ends: 78 [2025-03-04 07:43:42,133 INFO L226 Difference]: Without dead ends: 78 [2025-03-04 07:43:42,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:43:42,134 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:42,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:43:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-04 07:43:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2025-03-04 07:43:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.509433962264151) internal successors, (80), 70 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:43:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2025-03-04 07:43:42,140 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 22 [2025-03-04 07:43:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:42,140 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2025-03-04 07:43:42,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2025-03-04 07:43:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-04 07:43:42,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:42,141 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:42,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 07:43:42,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:42,341 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:42,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash 786084675, now seen corresponding path program 2 times [2025-03-04 07:43:42,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:42,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255911501] [2025-03-04 07:43:42,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 07:43:42,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:42,344 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:42,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 07:43:42,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-04 07:43:42,403 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 07:43:42,403 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 07:43:42,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:42,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:43:42,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:42,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:42,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:43,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:43,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255911501] [2025-03-04 07:43:43,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255911501] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:43:43,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:43,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2025-03-04 07:43:43,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304581999] [2025-03-04 07:43:43,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:43,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 07:43:43,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:43,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 07:43:43,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2025-03-04 07:43:43,814 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 23 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:45,107 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2025-03-04 07:43:45,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 07:43:45,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-03-04 07:43:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:45,108 INFO L225 Difference]: With dead ends: 93 [2025-03-04 07:43:45,108 INFO L226 Difference]: Without dead ends: 93 [2025-03-04 07:43:45,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2025-03-04 07:43:45,109 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 127 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:45,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 452 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-04 07:43:45,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-04 07:43:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2025-03-04 07:43:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 88 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:43:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2025-03-04 07:43:45,111 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 23 [2025-03-04 07:43:45,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:45,111 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2025-03-04 07:43:45,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:45,112 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2025-03-04 07:43:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-04 07:43:45,112 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:45,112 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:45,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 07:43:45,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:45,313 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:45,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash 713017307, now seen corresponding path program 1 times [2025-03-04 07:43:45,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389084513] [2025-03-04 07:43:45,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:45,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:45,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:45,315 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:45,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 07:43:45,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 07:43:45,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 07:43:45,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:45,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:45,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 07:43:45,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:45,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:45,482 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 07:43:45,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-04 07:43:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-04 07:43:45,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-04 07:43:49,704 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:49,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389084513] [2025-03-04 07:43:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389084513] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:43:49,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2025-03-04 07:43:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463193666] [2025-03-04 07:43:49,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:49,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 07:43:49,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:49,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 07:43:49,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-04 07:43:49,705 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:49,966 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2025-03-04 07:43:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 07:43:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-03-04 07:43:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:49,967 INFO L225 Difference]: With dead ends: 117 [2025-03-04 07:43:49,967 INFO L226 Difference]: Without dead ends: 117 [2025-03-04 07:43:49,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-04 07:43:49,967 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:49,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 221 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 07:43:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-04 07:43:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 97. [2025-03-04 07:43:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 92 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:43:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2025-03-04 07:43:49,971 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 34 [2025-03-04 07:43:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:49,975 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2025-03-04 07:43:49,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2025-03-04 07:43:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-04 07:43:49,976 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:49,976 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:49,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 07:43:50,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:50,177 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:50,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash 713017308, now seen corresponding path program 1 times [2025-03-04 07:43:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:50,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863859015] [2025-03-04 07:43:50,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:50,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:50,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:50,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:50,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 07:43:50,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 07:43:50,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 07:43:50,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:50,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:50,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 07:43:50,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:50,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:50,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-04 07:43:51,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:51,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863859015] [2025-03-04 07:43:51,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863859015] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:43:51,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:51,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2025-03-04 07:43:51,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24855267] [2025-03-04 07:43:51,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:51,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 07:43:51,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:51,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 07:43:51,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2025-03-04 07:43:51,407 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 25 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 07:43:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:52,285 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2025-03-04 07:43:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 07:43:52,286 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2025-03-04 07:43:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:52,287 INFO L225 Difference]: With dead ends: 102 [2025-03-04 07:43:52,287 INFO L226 Difference]: Without dead ends: 102 [2025-03-04 07:43:52,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2025-03-04 07:43:52,287 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 96 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:52,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 507 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 07:43:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-03-04 07:43:52,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2025-03-04 07:43:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 97 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:43:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2025-03-04 07:43:52,290 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 34 [2025-03-04 07:43:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:52,290 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2025-03-04 07:43:52,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 07:43:52,290 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2025-03-04 07:43:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-04 07:43:52,290 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:52,290 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:52,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 07:43:52,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:52,491 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:43:52,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1933049891, now seen corresponding path program 3 times [2025-03-04 07:43:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:52,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37769376] [2025-03-04 07:43:52,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 07:43:52,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:52,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:52,494 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:52,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 07:43:52,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 11 equivalence classes. [2025-03-04 07:43:57,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 41 of 41 statements. [2025-03-04 07:43:57,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-04 07:43:57,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:57,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-04 07:43:57,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:57,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:57,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:44:03,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37769376] [2025-03-04 07:44:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37769376] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:03,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2025-03-04 07:44:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601467501] [2025-03-04 07:44:03,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:03,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-04 07:44:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:03,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-04 07:44:03,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2025-03-04 07:44:03,231 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 40 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:44:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:05,498 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2025-03-04 07:44:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 07:44:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2025-03-04 07:44:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:05,499 INFO L225 Difference]: With dead ends: 97 [2025-03-04 07:44:05,499 INFO L226 Difference]: Without dead ends: 97 [2025-03-04 07:44:05,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=299, Invalid=1507, Unknown=0, NotChecked=0, Total=1806 [2025-03-04 07:44:05,500 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 96 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:05,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 776 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 07:44:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-04 07:44:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2025-03-04 07:44:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 90 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:44:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2025-03-04 07:44:05,503 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 41 [2025-03-04 07:44:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:05,503 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2025-03-04 07:44:05,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:44:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2025-03-04 07:44:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-04 07:44:05,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:05,504 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:05,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-04 07:44:05,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:05,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:05,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1841847379, now seen corresponding path program 2 times [2025-03-04 07:44:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:05,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912631304] [2025-03-04 07:44:05,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 07:44:05,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:05,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:05,707 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:05,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 07:44:05,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-03-04 07:44:05,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-04 07:44:05,794 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 07:44:05,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:05,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 07:44:05,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:05,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:05,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:06,046 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2025-03-04 07:44:06,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:44:06,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:44:06,072 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 07:44:06,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 07:44:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2025-03-04 07:44:06,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:14,266 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:14,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912631304] [2025-03-04 07:44:14,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912631304] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:14,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1310281001] [2025-03-04 07:44:14,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 07:44:14,266 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 07:44:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 07:44:14,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 07:44:14,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2025-03-04 07:44:14,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-03-04 07:44:14,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-04 07:44:14,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 07:44:14,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:14,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 07:44:14,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:14,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:14,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:14,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:44:14,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:44:14,718 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 07:44:14,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 07:44:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2025-03-04 07:44:14,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1310281001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:18,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2025-03-04 07:44:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752829516] [2025-03-04 07:44:18,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:18,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 07:44:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:18,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 07:44:18,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=107, Unknown=2, NotChecked=20, Total=156 [2025-03-04 07:44:18,891 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:44:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:19,326 INFO L93 Difference]: Finished difference Result 133 states and 153 transitions. [2025-03-04 07:44:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 07:44:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2025-03-04 07:44:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:19,327 INFO L225 Difference]: With dead ends: 133 [2025-03-04 07:44:19,327 INFO L226 Difference]: Without dead ends: 133 [2025-03-04 07:44:19,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=66, Invalid=278, Unknown=2, NotChecked=34, Total=380 [2025-03-04 07:44:19,328 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 79 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:19,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 396 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 332 Invalid, 0 Unknown, 109 Unchecked, 0.3s Time] [2025-03-04 07:44:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-03-04 07:44:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 113. [2025-03-04 07:44:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 106 states have internal predecessors, (123), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-04 07:44:19,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2025-03-04 07:44:19,331 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 49 [2025-03-04 07:44:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:19,331 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2025-03-04 07:44:19,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:44:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2025-03-04 07:44:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 07:44:19,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:19,332 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:19,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2025-03-04 07:44:19,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-04 07:44:19,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:19,733 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:19,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1621889658, now seen corresponding path program 1 times [2025-03-04 07:44:19,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:19,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234293910] [2025-03-04 07:44:19,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:19,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:19,735 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:19,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 07:44:19,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 07:44:19,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 07:44:19,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:19,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:19,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 07:44:19,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2025-03-04 07:44:19,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:44:19,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234293910] [2025-03-04 07:44:19,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234293910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:44:19,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:44:19,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 07:44:19,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322817540] [2025-03-04 07:44:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:44:19,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 07:44:19,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:19,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 07:44:19,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:44:19,840 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:44:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:19,857 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2025-03-04 07:44:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 07:44:19,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2025-03-04 07:44:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:19,858 INFO L225 Difference]: With dead ends: 115 [2025-03-04 07:44:19,858 INFO L226 Difference]: Without dead ends: 115 [2025-03-04 07:44:19,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:44:19,859 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:19,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 209 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:44:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-03-04 07:44:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2025-03-04 07:44:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.326086956521739) internal successors, (122), 105 states have internal predecessors, (122), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-04 07:44:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2025-03-04 07:44:19,861 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 53 [2025-03-04 07:44:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:19,861 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2025-03-04 07:44:19,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:44:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2025-03-04 07:44:19,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 07:44:19,861 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:19,861 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:19,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-04 07:44:20,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:20,062 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:20,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1818403163, now seen corresponding path program 1 times [2025-03-04 07:44:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:20,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100792456] [2025-03-04 07:44:20,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:20,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:20,064 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:20,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 07:44:20,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 07:44:20,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 07:44:20,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:20,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:20,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 07:44:20,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:20,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 07:44:20,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 07:44:20,351 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:20,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100792456] [2025-03-04 07:44:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100792456] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:20,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2025-03-04 07:44:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399311408] [2025-03-04 07:44:20,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:20,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 07:44:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:20,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 07:44:20,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 07:44:20,352 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:44:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:20,528 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2025-03-04 07:44:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 07:44:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2025-03-04 07:44:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:20,529 INFO L225 Difference]: With dead ends: 129 [2025-03-04 07:44:20,529 INFO L226 Difference]: Without dead ends: 129 [2025-03-04 07:44:20,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-04 07:44:20,529 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:20,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 205 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 07:44:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-03-04 07:44:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2025-03-04 07:44:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 106 states have internal predecessors, (124), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-04 07:44:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2025-03-04 07:44:20,534 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 53 [2025-03-04 07:44:20,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:20,535 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2025-03-04 07:44:20,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:44:20,535 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2025-03-04 07:44:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-03-04 07:44:20,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:20,536 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:20,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-04 07:44:20,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:20,736 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:20,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1818403162, now seen corresponding path program 1 times [2025-03-04 07:44:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601970555] [2025-03-04 07:44:20,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:20,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:20,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:20,738 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:20,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-04 07:44:20,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-04 07:44:20,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-04 07:44:20,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:20,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:20,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:44:20,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:20,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 07:44:21,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 07:44:21,570 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601970555] [2025-03-04 07:44:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601970555] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:21,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2025-03-04 07:44:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480419588] [2025-03-04 07:44:21,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:21,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 07:44:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:21,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 07:44:21,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2025-03-04 07:44:21,571 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:22,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:22,292 INFO L93 Difference]: Finished difference Result 150 states and 177 transitions. [2025-03-04 07:44:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 07:44:22,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 53 [2025-03-04 07:44:22,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:22,294 INFO L225 Difference]: With dead ends: 150 [2025-03-04 07:44:22,294 INFO L226 Difference]: Without dead ends: 150 [2025-03-04 07:44:22,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2025-03-04 07:44:22,295 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 82 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:22,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 599 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 07:44:22,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-04 07:44:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 136. [2025-03-04 07:44:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.4434782608695653) internal successors, (166), 128 states have internal predecessors, (166), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-04 07:44:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 177 transitions. [2025-03-04 07:44:22,298 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 177 transitions. Word has length 53 [2025-03-04 07:44:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 177 transitions. [2025-03-04 07:44:22,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 14 states have internal predecessors, (43), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 177 transitions. [2025-03-04 07:44:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-04 07:44:22,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:22,299 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:22,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-04 07:44:22,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:22,500 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:22,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2077364975, now seen corresponding path program 1 times [2025-03-04 07:44:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:22,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720785104] [2025-03-04 07:44:22,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:22,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:22,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:22,502 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:22,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-04 07:44:22,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-04 07:44:22,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-04 07:44:22,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:22,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:22,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 07:44:22,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-03-04 07:44:22,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-03-04 07:44:22,744 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:22,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720785104] [2025-03-04 07:44:22,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720785104] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:22,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 07:44:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706477328] [2025-03-04 07:44:22,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:22,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 07:44:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:22,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 07:44:22,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 07:44:22,745 INFO L87 Difference]: Start difference. First operand 136 states and 177 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:22,854 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2025-03-04 07:44:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:44:22,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2025-03-04 07:44:22,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:22,855 INFO L225 Difference]: With dead ends: 174 [2025-03-04 07:44:22,855 INFO L226 Difference]: Without dead ends: 174 [2025-03-04 07:44:22,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 07:44:22,856 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 70 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:22,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 207 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:44:22,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-04 07:44:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2025-03-04 07:44:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 154 states have internal predecessors, (202), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 07:44:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 225 transitions. [2025-03-04 07:44:22,860 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 225 transitions. Word has length 54 [2025-03-04 07:44:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:22,861 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 225 transitions. [2025-03-04 07:44:22,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 225 transitions. [2025-03-04 07:44:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-04 07:44:22,861 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:22,861 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:22,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-04 07:44:23,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:23,062 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:23,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:23,062 INFO L85 PathProgramCache]: Analyzing trace with hash -535923216, now seen corresponding path program 1 times [2025-03-04 07:44:23,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:23,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230413669] [2025-03-04 07:44:23,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:23,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:23,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:23,064 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:23,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-04 07:44:23,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-04 07:44:23,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-04 07:44:23,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:23,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:23,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-04 07:44:23,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:23,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:23,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 07:44:23,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 07:44:23,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 07:44:23,343 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 5 treesize of output 3 [2025-03-04 07:44:23,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-03-04 07:44:23,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:23,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-03-04 07:44:23,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:23,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-03-04 07:44:23,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:23,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 41 [2025-03-04 07:44:23,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:23,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 41 [2025-03-04 07:44:23,829 INFO L349 Elim1Store]: treesize reduction 80, result has 26.6 percent of original size [2025-03-04 07:44:23,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 50 [2025-03-04 07:44:23,944 INFO L349 Elim1Store]: treesize reduction 80, result has 26.6 percent of original size [2025-03-04 07:44:23,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 42 treesize of output 50 [2025-03-04 07:44:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 141 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 07:44:24,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:54,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 68 [2025-03-04 07:44:54,616 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 327534 treesize of output 327406 [2025-03-04 07:44:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-04 07:44:55,139 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:55,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230413669] [2025-03-04 07:44:55,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230413669] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:55,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 40 [2025-03-04 07:44:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800123133] [2025-03-04 07:44:55,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:55,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-04 07:44:55,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:55,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-04 07:44:55,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1344, Unknown=7, NotChecked=0, Total=1640 [2025-03-04 07:44:55,141 INFO L87 Difference]: Start difference. First operand 168 states and 225 transitions. Second operand has 41 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 40 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:58,752 INFO L93 Difference]: Finished difference Result 207 states and 267 transitions. [2025-03-04 07:44:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-04 07:44:58,753 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 40 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2025-03-04 07:44:58,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:58,754 INFO L225 Difference]: With dead ends: 207 [2025-03-04 07:44:58,754 INFO L226 Difference]: Without dead ends: 207 [2025-03-04 07:44:58,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=645, Invalid=3254, Unknown=7, NotChecked=0, Total=3906 [2025-03-04 07:44:58,756 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 138 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:58,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 877 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-04 07:44:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-03-04 07:44:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 178. [2025-03-04 07:44:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 151 states have (on average 1.403973509933775) internal successors, (212), 163 states have internal predecessors, (212), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-04 07:44:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 235 transitions. [2025-03-04 07:44:58,761 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 235 transitions. Word has length 54 [2025-03-04 07:44:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:58,762 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 235 transitions. [2025-03-04 07:44:58,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 40 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 235 transitions. [2025-03-04 07:44:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-04 07:44:58,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:58,763 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:58,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-04 07:44:58,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:58,964 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-03-04 07:44:58,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash 566249475, now seen corresponding path program 1 times [2025-03-04 07:44:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765543417] [2025-03-04 07:44:58,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:58,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:58,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:58,966 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:58,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-04 07:44:59,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-04 07:44:59,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-04 07:44:59,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:59,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:59,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-03-04 07:44:59,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:59,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:59,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 07:44:59,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-03-04 07:44:59,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:59,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-03-04 07:44:59,503 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 5 treesize of output 3 [2025-03-04 07:44:59,580 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:59,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2025-03-04 07:44:59,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:59,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2025-03-04 07:44:59,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:59,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2025-03-04 07:44:59,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:59,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2025-03-04 07:45:00,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:45:00,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2025-03-04 07:45:00,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:45:00,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2025-03-04 07:45:00,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:45:00,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2025-03-04 07:45:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:45:01,590 INFO L312 TraceCheckSpWp]: Computing backward predicates...