./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.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/uthash-2.0.2/uthash_SFH_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:37:49,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:37:49,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:37:49,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:37:49,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:37:49,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:37:49,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:37:49,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:37:49,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:37:49,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:37:49,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:37:49,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:37:49,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:37:49,081 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:37:49,081 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:37:49,082 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:37:49,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:37:49,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:37:49,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:37:49,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:37:49,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:37:49,084 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 -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2025-03-04 09:37:49,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:37:49,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:37:49,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:37:49,336 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:37:49,337 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:37:49,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2025-03-04 09:37:50,473 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d82a3886/791469517e8544969fe1464bf47f80e4/FLAG1a7e32944 [2025-03-04 09:37:50,775 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:37:50,775 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2025-03-04 09:37:50,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d82a3886/791469517e8544969fe1464bf47f80e4/FLAG1a7e32944 [2025-03-04 09:37:50,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d82a3886/791469517e8544969fe1464bf47f80e4 [2025-03-04 09:37:50,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:37:50,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:37:50,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:50,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:37:50,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:37:50,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:50" (1/1) ... [2025-03-04 09:37:50,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a421380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:50, skipping insertion in model container [2025-03-04 09:37:50,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:50" (1/1) ... [2025-03-04 09:37:50,837 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:37:51,117 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 09:37:51,144 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 09:37:51,147 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 09:37:51,150 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 09:37:51,156 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 09:37:51,166 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 09:37:51,167 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 09:37:51,169 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 09:37:51,175 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 09:37:51,175 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 09:37:51,176 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 09:37:51,178 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 09:37:51,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:51,195 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 09:37:51,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77b2c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:51, skipping insertion in model container [2025-03-04 09:37:51,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:51,196 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:37:51,197 INFO L158 Benchmark]: Toolchain (without parser) took 396.99ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 104.0MB in the end (delta: 17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:37:51,197 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:37:51,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.35ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 104.0MB in the end (delta: 17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:37:51,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.35ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 104.0MB in the end (delta: 17.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:37:52,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:37:52,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:37:52,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:37:52,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:37:52,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:37:52,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:37:52,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:37:52,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:37:52,988 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:37:52,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:37:52,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:37:52,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:37:52,989 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:37:52,990 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:37:52,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:37:52,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:37:52,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:37:52,991 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 -> 1447114af8a4b489e3ec713f117f7a92d9cc93e5175903910b61bfe512c41aed [2025-03-04 09:37:53,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:37:53,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:37:53,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:37:53,237 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:37:53,238 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:37:53,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2025-03-04 09:37:54,412 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e65e6c51/6b892dba7a5b49bb92a17535ca1255bb/FLAG03a6268f7 [2025-03-04 09:37:54,694 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:37:54,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-2.i [2025-03-04 09:37:54,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e65e6c51/6b892dba7a5b49bb92a17535ca1255bb/FLAG03a6268f7 [2025-03-04 09:37:54,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e65e6c51/6b892dba7a5b49bb92a17535ca1255bb [2025-03-04 09:37:54,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:37:54,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:37:54,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:54,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:37:54,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:37:54,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:54" (1/1) ... [2025-03-04 09:37:54,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66de47cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:54, skipping insertion in model container [2025-03-04 09:37:54,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:37:54" (1/1) ... [2025-03-04 09:37:55,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:37:55,261 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 09:37:55,294 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 09:37:55,297 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 09:37:55,301 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 09:37:55,306 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 09:37:55,315 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 09:37:55,316 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 09:37:55,318 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 09:37:55,319 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 09:37:55,320 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 09:37:55,320 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 09:37:55,328 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 09:37:55,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:55,353 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:37:55,364 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:37:55,399 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 09:37:55,416 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 09:37:55,422 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 09:37:55,427 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 09:37:55,430 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 09:37:55,445 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 09:37:55,446 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 09:37:55,449 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 09:37:55,450 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 09:37:55,450 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 09:37:55,451 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 09:37:55,453 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 09:37:55,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:55,461 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:37:55,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:37:55,569 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:37:55,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55 WrapperNode [2025-03-04 09:37:55,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:37:55,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:37:55,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:37:55,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:37:55,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,625 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 774 [2025-03-04 09:37:55,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:37:55,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:37:55,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:37:55,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:37:55,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,632 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,690 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2025-03-04 09:37:55,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,716 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:37:55,738 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:37:55,738 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:37:55,738 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:37:55,738 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (1/1) ... [2025-03-04 09:37:55,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:37:55,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:55,763 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 09:37:55,766 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 09:37:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:37:55,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:37:55,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:37:55,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:37:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:37:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:37:55,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:37:55,922 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:37:55,923 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:37:57,977 INFO L? ?]: Removed 904 outVars from TransFormulas that were not future-live. [2025-03-04 09:37:57,977 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:37:57,999 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:37:58,003 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:37:58,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:37:58 BoogieIcfgContainer [2025-03-04 09:37:58,004 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:37:58,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:37:58,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:37:58,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:37:58,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:37:54" (1/3) ... [2025-03-04 09:37:58,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191b493e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:37:58, skipping insertion in model container [2025-03-04 09:37:58,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:37:55" (2/3) ... [2025-03-04 09:37:58,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191b493e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:37:58, skipping insertion in model container [2025-03-04 09:37:58,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:37:58" (3/3) ... [2025-03-04 09:37:58,012 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-2.i [2025-03-04 09:37:58,022 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:37:58,023 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test1-2.i that has 4 procedures, 856 locations, 1 initial locations, 24 loop locations, and 425 error locations. [2025-03-04 09:37:58,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:37:58,079 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;@54f7ae3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:37:58,079 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-03-04 09:37:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 851 states, 413 states have (on average 2.234866828087167) internal successors, (923), 845 states have internal predecessors, (923), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:37:58,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:37:58,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:58,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:37:58,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr110REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:37:58,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash 943127406, now seen corresponding path program 1 times [2025-03-04 09:37:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213439456] [2025-03-04 09:37:58,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:58,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:58,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:58,101 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 09:37:58,103 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 09:37:58,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:37:58,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:37:58,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:58,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:58,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:37:58,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:58,252 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 09:37:58,252 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:58,252 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:58,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213439456] [2025-03-04 09:37:58,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213439456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:58,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:58,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:37:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418259357] [2025-03-04 09:37:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:58,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:37:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:58,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:37:58,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:37:58,273 INFO L87 Difference]: Start difference. First operand has 851 states, 413 states have (on average 2.234866828087167) internal successors, (923), 845 states have internal predecessors, (923), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:37:58,913 INFO L93 Difference]: Finished difference Result 1148 states and 1248 transitions. [2025-03-04 09:37:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:37:58,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-04 09:37:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:37:58,931 INFO L225 Difference]: With dead ends: 1148 [2025-03-04 09:37:58,933 INFO L226 Difference]: Without dead ends: 1146 [2025-03-04 09:37:58,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:37:58,938 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 328 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:37:58,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 2586 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-04 09:37:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2025-03-04 09:37:58,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 921. [2025-03-04 09:37:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 489 states have (on average 2.087934560327198) internal successors, (1021), 915 states have internal predecessors, (1021), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:37:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1047 transitions. [2025-03-04 09:37:58,994 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1047 transitions. Word has length 5 [2025-03-04 09:37:58,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:37:58,994 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1047 transitions. [2025-03-04 09:37:58,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:37:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1047 transitions. [2025-03-04 09:37:58,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:37:58,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:37:58,995 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:37:59,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 09:37:59,199 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 09:37:59,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr422REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:37:59,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:37:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 943775834, now seen corresponding path program 1 times [2025-03-04 09:37:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:37:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593867728] [2025-03-04 09:37:59,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:37:59,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:37:59,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:37:59,202 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 09:37:59,203 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 09:37:59,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:37:59,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:37:59,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:37:59,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:37:59,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:37:59,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:37:59,308 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 7 [2025-03-04 09:37:59,317 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 09:37:59,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:37:59,318 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:37:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593867728] [2025-03-04 09:37:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593867728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:37:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:37:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:37:59,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854212902] [2025-03-04 09:37:59,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:37:59,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:37:59,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:37:59,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:37:59,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:37:59,319 INFO L87 Difference]: Start difference. First operand 921 states and 1047 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:00,180 INFO L93 Difference]: Finished difference Result 872 states and 993 transitions. [2025-03-04 09:38:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-04 09:38:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:00,183 INFO L225 Difference]: With dead ends: 872 [2025-03-04 09:38:00,183 INFO L226 Difference]: Without dead ends: 872 [2025-03-04 09:38:00,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:00,184 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 531 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:00,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 650 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-04 09:38:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2025-03-04 09:38:00,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2025-03-04 09:38:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 489 states have (on average 1.9775051124744376) internal successors, (967), 866 states have internal predecessors, (967), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 993 transitions. [2025-03-04 09:38:00,200 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 993 transitions. Word has length 5 [2025-03-04 09:38:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:00,201 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 993 transitions. [2025-03-04 09:38:00,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 993 transitions. [2025-03-04 09:38:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:38:00,201 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:00,202 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:38:00,207 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 09:38:00,402 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 09:38:00,402 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr423REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:00,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:00,403 INFO L85 PathProgramCache]: Analyzing trace with hash 943775835, now seen corresponding path program 1 times [2025-03-04 09:38:00,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:00,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159735233] [2025-03-04 09:38:00,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:00,406 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 09:38:00,407 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 09:38:00,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:38:00,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:38:00,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:00,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:00,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:38:00,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:00,479 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 09:38:00,495 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 09:38:00,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:00,496 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:00,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159735233] [2025-03-04 09:38:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159735233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:00,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:38:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123733251] [2025-03-04 09:38:00,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:38:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:00,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:38:00,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:00,497 INFO L87 Difference]: Start difference. First operand 872 states and 993 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:01,566 INFO L93 Difference]: Finished difference Result 946 states and 1066 transitions. [2025-03-04 09:38:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:01,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-04 09:38:01,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:01,569 INFO L225 Difference]: With dead ends: 946 [2025-03-04 09:38:01,569 INFO L226 Difference]: Without dead ends: 946 [2025-03-04 09:38:01,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:01,570 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 260 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:01,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1125 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:38:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2025-03-04 09:38:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 899. [2025-03-04 09:38:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 526 states have (on average 1.950570342205323) internal successors, (1026), 893 states have internal predecessors, (1026), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1052 transitions. [2025-03-04 09:38:01,583 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1052 transitions. Word has length 5 [2025-03-04 09:38:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:01,583 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1052 transitions. [2025-03-04 09:38:01,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:01,583 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1052 transitions. [2025-03-04 09:38:01,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:38:01,583 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:01,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:01,589 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 09:38:01,784 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 09:38:01,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:01,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:01,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1035921072, now seen corresponding path program 1 times [2025-03-04 09:38:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342970688] [2025-03-04 09:38:01,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:01,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:01,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:01,787 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 09:38:01,788 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 09:38:01,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:38:01,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:38:01,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:01,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:01,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 09:38:01,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:01,862 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 09:38:01,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:01,862 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:01,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342970688] [2025-03-04 09:38:01,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342970688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:01,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:01,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:38:01,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6235602] [2025-03-04 09:38:01,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:01,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:38:01,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:01,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:38:01,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:01,864 INFO L87 Difference]: Start difference. First operand 899 states and 1052 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:02,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:02,534 INFO L93 Difference]: Finished difference Result 900 states and 1052 transitions. [2025-03-04 09:38:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:38:02,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-04 09:38:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:02,537 INFO L225 Difference]: With dead ends: 900 [2025-03-04 09:38:02,537 INFO L226 Difference]: Without dead ends: 895 [2025-03-04 09:38:02,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:38:02,537 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:02,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1303 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 09:38:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-03-04 09:38:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2025-03-04 09:38:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 522 states have (on average 1.9559386973180077) internal successors, (1021), 889 states have internal predecessors, (1021), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1047 transitions. [2025-03-04 09:38:02,549 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1047 transitions. Word has length 8 [2025-03-04 09:38:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:02,552 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1047 transitions. [2025-03-04 09:38:02,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1047 transitions. [2025-03-04 09:38:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:38:02,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:02,552 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:02,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 09:38:02,753 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 09:38:02,753 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr418REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:02,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:02,753 INFO L85 PathProgramCache]: Analyzing trace with hash -81503881, now seen corresponding path program 1 times [2025-03-04 09:38:02,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595510605] [2025-03-04 09:38:02,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:02,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:02,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:02,755 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 09:38:02,760 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 09:38:02,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:38:02,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:38:02,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:02,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:02,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:38:02,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:02,849 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 09:38:02,869 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 09:38:02,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:02,869 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595510605] [2025-03-04 09:38:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595510605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735626664] [2025-03-04 09:38:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:02,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:02,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:02,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:02,870 INFO L87 Difference]: Start difference. First operand 895 states and 1047 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:04,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:04,053 INFO L93 Difference]: Finished difference Result 880 states and 1009 transitions. [2025-03-04 09:38:04,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:04,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:38:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:04,056 INFO L225 Difference]: With dead ends: 880 [2025-03-04 09:38:04,056 INFO L226 Difference]: Without dead ends: 880 [2025-03-04 09:38:04,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:04,057 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 582 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:04,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 950 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:38:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2025-03-04 09:38:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 872. [2025-03-04 09:38:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 522 states have (on average 1.867816091954023) internal successors, (975), 866 states have internal predecessors, (975), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1001 transitions. [2025-03-04 09:38:04,068 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1001 transitions. Word has length 10 [2025-03-04 09:38:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:04,068 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1001 transitions. [2025-03-04 09:38:04,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1001 transitions. [2025-03-04 09:38:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:38:04,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:04,069 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:04,076 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 09:38:04,273 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 09:38:04,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:04,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -81503880, now seen corresponding path program 1 times [2025-03-04 09:38:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:04,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178109389] [2025-03-04 09:38:04,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:04,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:04,276 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 09:38:04,277 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 09:38:04,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:38:04,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:38:04,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:04,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:04,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:38:04,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:04,379 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 09:38:04,450 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 09:38:04,450 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:04,450 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:04,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178109389] [2025-03-04 09:38:04,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178109389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:04,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:04,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:38:04,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090115765] [2025-03-04 09:38:04,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:04,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:04,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:04,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:04,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:04,452 INFO L87 Difference]: Start difference. First operand 872 states and 1001 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:05,892 INFO L93 Difference]: Finished difference Result 1049 states and 1169 transitions. [2025-03-04 09:38:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:05,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:38:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:05,895 INFO L225 Difference]: With dead ends: 1049 [2025-03-04 09:38:05,895 INFO L226 Difference]: Without dead ends: 1049 [2025-03-04 09:38:05,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:05,896 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 384 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:05,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1557 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:38:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2025-03-04 09:38:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 986. [2025-03-04 09:38:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 636 states have (on average 1.75) internal successors, (1113), 980 states have internal predecessors, (1113), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1139 transitions. [2025-03-04 09:38:05,908 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1139 transitions. Word has length 10 [2025-03-04 09:38:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:05,908 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1139 transitions. [2025-03-04 09:38:05,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1139 transitions. [2025-03-04 09:38:05,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-04 09:38:05,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:05,909 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:05,915 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 09:38:06,109 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 09:38:06,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:06,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 786870366, now seen corresponding path program 1 times [2025-03-04 09:38:06,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142872061] [2025-03-04 09:38:06,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:06,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:06,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:06,112 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 09:38:06,113 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 09:38:06,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-04 09:38:06,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 09:38:06,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:06,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:06,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:38:06,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:06,236 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 09:38:06,359 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 09:38:06,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:06,662 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 09:38:06,662 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142872061] [2025-03-04 09:38:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142872061] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:06,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:38:06,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:38:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155246873] [2025-03-04 09:38:06,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:06,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:38:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:06,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:38:06,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:38:06,663 INFO L87 Difference]: Start difference. First operand 986 states and 1139 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:10,922 INFO L93 Difference]: Finished difference Result 1405 states and 1659 transitions. [2025-03-04 09:38:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:38:10,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-03-04 09:38:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:10,926 INFO L225 Difference]: With dead ends: 1405 [2025-03-04 09:38:10,926 INFO L226 Difference]: Without dead ends: 1405 [2025-03-04 09:38:10,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:38:10,926 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 1504 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:10,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2538 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-04 09:38:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2025-03-04 09:38:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1150. [2025-03-04 09:38:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 800 states have (on average 1.68125) internal successors, (1345), 1144 states have internal predecessors, (1345), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1371 transitions. [2025-03-04 09:38:10,945 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1371 transitions. Word has length 29 [2025-03-04 09:38:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:10,945 INFO L471 AbstractCegarLoop]: Abstraction has 1150 states and 1371 transitions. [2025-03-04 09:38:10,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:10,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1371 transitions. [2025-03-04 09:38:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-04 09:38:10,947 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:10,947 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:10,958 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 09:38:11,148 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 09:38:11,148 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:11,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:11,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1556394879, now seen corresponding path program 1 times [2025-03-04 09:38:11,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:11,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760348074] [2025-03-04 09:38:11,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:11,151 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 09:38:11,151 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 09:38:11,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 09:38:11,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 09:38:11,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:11,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:11,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:11,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:11,314 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 09:38:11,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:11,314 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760348074] [2025-03-04 09:38:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760348074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:11,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:38:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582849877] [2025-03-04 09:38:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:11,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:11,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:11,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:11,315 INFO L87 Difference]: Start difference. First operand 1150 states and 1371 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:11,385 INFO L93 Difference]: Finished difference Result 839 states and 935 transitions. [2025-03-04 09:38:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:38:11,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-03-04 09:38:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:11,392 INFO L225 Difference]: With dead ends: 839 [2025-03-04 09:38:11,392 INFO L226 Difference]: Without dead ends: 839 [2025-03-04 09:38:11,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:11,393 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 56 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:11,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2186 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:38:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2025-03-04 09:38:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2025-03-04 09:38:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 510 states have (on average 1.7784313725490195) internal successors, (907), 831 states have internal predecessors, (907), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 933 transitions. [2025-03-04 09:38:11,406 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 933 transitions. Word has length 44 [2025-03-04 09:38:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:11,406 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 933 transitions. [2025-03-04 09:38:11,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:11,406 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 933 transitions. [2025-03-04 09:38:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-04 09:38:11,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:11,409 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:11,418 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 09:38:11,610 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 09:38:11,610 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr337REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:11,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:11,610 INFO L85 PathProgramCache]: Analyzing trace with hash 591851959, now seen corresponding path program 1 times [2025-03-04 09:38:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691025313] [2025-03-04 09:38:11,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:11,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:11,612 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 09:38:11,613 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 09:38:11,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 09:38:11,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 09:38:11,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:11,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:11,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:38:11,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:11,775 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 09:38:12,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:38:12,097 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 09:38:12,117 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:38:12,118 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 09:38:12,123 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 09:38:12,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:12,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:12,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691025313] [2025-03-04 09:38:12,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691025313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:12,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:12,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:38:12,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999284861] [2025-03-04 09:38:12,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:12,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:38:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:12,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:38:12,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:12,125 INFO L87 Difference]: Start difference. First operand 837 states and 933 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:13,267 INFO L93 Difference]: Finished difference Result 799 states and 895 transitions. [2025-03-04 09:38:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:38:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-03-04 09:38:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:13,271 INFO L225 Difference]: With dead ends: 799 [2025-03-04 09:38:13,271 INFO L226 Difference]: Without dead ends: 799 [2025-03-04 09:38:13,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:38:13,271 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 447 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:13,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 784 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:38:13,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-04 09:38:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 762. [2025-03-04 09:38:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 473 states have (on average 1.6807610993657505) internal successors, (795), 756 states have internal predecessors, (795), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 821 transitions. [2025-03-04 09:38:13,281 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 821 transitions. Word has length 52 [2025-03-04 09:38:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:13,281 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 821 transitions. [2025-03-04 09:38:13,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 821 transitions. [2025-03-04 09:38:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-04 09:38:13,283 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:13,283 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:13,293 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 09:38:13,483 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 09:38:13,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:13,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1753738290, now seen corresponding path program 1 times [2025-03-04 09:38:13,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:13,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000637195] [2025-03-04 09:38:13,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:13,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:13,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:13,487 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 09:38:13,488 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 09:38:13,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-04 09:38:13,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-04 09:38:13,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:13,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:13,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:38:13,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:13,669 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 09:38:13,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:38:13,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 09:38:13,708 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 09:38:13,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:13,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000637195] [2025-03-04 09:38:13,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000637195] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:13,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:13,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:38:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614130892] [2025-03-04 09:38:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:13,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:38:13,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:13,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:38:13,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:13,710 INFO L87 Difference]: Start difference. First operand 762 states and 821 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:14,745 INFO L93 Difference]: Finished difference Result 761 states and 820 transitions. [2025-03-04 09:38:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:38:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-04 09:38:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:14,748 INFO L225 Difference]: With dead ends: 761 [2025-03-04 09:38:14,748 INFO L226 Difference]: Without dead ends: 761 [2025-03-04 09:38:14,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:38:14,748 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 2 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:14,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1879 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:38:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-03-04 09:38:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2025-03-04 09:38:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 473 states have (on average 1.6786469344608879) internal successors, (794), 755 states have internal predecessors, (794), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 820 transitions. [2025-03-04 09:38:14,758 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 820 transitions. Word has length 57 [2025-03-04 09:38:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:14,758 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 820 transitions. [2025-03-04 09:38:14,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 820 transitions. [2025-03-04 09:38:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-04 09:38:14,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:14,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:14,768 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 09:38:14,959 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 09:38:14,959 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:14,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1753738289, now seen corresponding path program 1 times [2025-03-04 09:38:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:14,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246877844] [2025-03-04 09:38:14,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:14,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:14,962 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 09:38:14,963 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 09:38:15,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-04 09:38:15,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-04 09:38:15,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:15,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:15,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:38:15,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:15,116 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 09:38:15,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:38:15,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:38:15,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-04 09:38:15,182 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 09:38:15,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:15,182 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246877844] [2025-03-04 09:38:15,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246877844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:15,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:15,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:38:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937728537] [2025-03-04 09:38:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:15,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:38:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:15,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:38:15,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:38:15,183 INFO L87 Difference]: Start difference. First operand 761 states and 820 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:16,493 INFO L93 Difference]: Finished difference Result 760 states and 819 transitions. [2025-03-04 09:38:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:38:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-04 09:38:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:16,495 INFO L225 Difference]: With dead ends: 760 [2025-03-04 09:38:16,495 INFO L226 Difference]: Without dead ends: 760 [2025-03-04 09:38:16,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:38:16,495 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 1 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:16,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1902 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:38:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2025-03-04 09:38:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2025-03-04 09:38:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 472 states have (on average 1.680084745762712) internal successors, (793), 754 states have internal predecessors, (793), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-04 09:38:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 819 transitions. [2025-03-04 09:38:16,503 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 819 transitions. Word has length 57 [2025-03-04 09:38:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:16,504 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 819 transitions. [2025-03-04 09:38:16,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:38:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 819 transitions. [2025-03-04 09:38:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:38:16,505 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:16,505 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:16,515 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 09:38:16,705 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 09:38:16,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:16,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash -776460821, now seen corresponding path program 1 times [2025-03-04 09:38:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [38636417] [2025-03-04 09:38:16,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:16,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:16,708 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 09:38:16,710 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 09:38:16,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:38:16,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:38:16,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:16,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:16,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:38:16,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:16,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:38:16,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 09:38:16,937 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 09:38:16,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:16,938 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38636417] [2025-03-04 09:38:16,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38636417] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:16,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:16,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:38:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084588861] [2025-03-04 09:38:16,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:16,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:38:16,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:16,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:38:16,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:38:16,939 INFO L87 Difference]: Start difference. First operand 760 states and 819 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:38:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:18,432 INFO L93 Difference]: Finished difference Result 772 states and 834 transitions. [2025-03-04 09:38:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:38:18,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-03-04 09:38:18,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:18,434 INFO L225 Difference]: With dead ends: 772 [2025-03-04 09:38:18,434 INFO L226 Difference]: Without dead ends: 772 [2025-03-04 09:38:18,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:38:18,435 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 12 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:18,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2528 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:38:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2025-03-04 09:38:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 766. [2025-03-04 09:38:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 477 states have (on average 1.6771488469601676) internal successors, (800), 759 states have internal predecessors, (800), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2025-03-04 09:38:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 829 transitions. [2025-03-04 09:38:18,446 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 829 transitions. Word has length 65 [2025-03-04 09:38:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:18,447 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 829 transitions. [2025-03-04 09:38:18,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:38:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 829 transitions. [2025-03-04 09:38:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:38:18,448 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:18,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:18,459 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 09:38:18,648 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 09:38:18,648 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:18,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -776460820, now seen corresponding path program 1 times [2025-03-04 09:38:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016524473] [2025-03-04 09:38:18,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:18,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:18,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:18,652 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 09:38:18,653 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 09:38:18,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:38:18,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:38:18,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:18,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:18,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:38:18,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:18,830 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 09:38:18,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:38:18,831 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:18,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016524473] [2025-03-04 09:38:18,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016524473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:38:18,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:38:18,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:38:18,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108924145] [2025-03-04 09:38:18,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:38:18,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:38:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:18,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:38:18,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:18,831 INFO L87 Difference]: Start difference. First operand 766 states and 829 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:38:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:18,860 INFO L93 Difference]: Finished difference Result 763 states and 823 transitions. [2025-03-04 09:38:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:38:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2025-03-04 09:38:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:18,863 INFO L225 Difference]: With dead ends: 763 [2025-03-04 09:38:18,864 INFO L226 Difference]: Without dead ends: 763 [2025-03-04 09:38:18,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:38:18,865 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 0 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:18,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2170 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:38:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-04 09:38:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2025-03-04 09:38:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 474 states have (on average 1.6793248945147679) internal successors, (796), 757 states have internal predecessors, (796), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:38:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 823 transitions. [2025-03-04 09:38:18,878 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 823 transitions. Word has length 65 [2025-03-04 09:38:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:18,878 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 823 transitions. [2025-03-04 09:38:18,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:38:18,879 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 823 transitions. [2025-03-04 09:38:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:38:18,879 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:18,879 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:18,889 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 09:38:19,079 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 09:38:19,080 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:19,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:19,080 INFO L85 PathProgramCache]: Analyzing trace with hash -181213625, now seen corresponding path program 1 times [2025-03-04 09:38:19,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:19,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634285108] [2025-03-04 09:38:19,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:19,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:19,083 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 09:38:19,084 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 09:38:19,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:38:19,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:38:19,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:19,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:19,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:38:19,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:19,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:19,327 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634285108] [2025-03-04 09:38:19,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634285108] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:19,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:38:19,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:38:19,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398351209] [2025-03-04 09:38:19,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:19,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:38:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:19,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:38:19,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:38:19,328 INFO L87 Difference]: Start difference. First operand 763 states and 823 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:38:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:19,467 INFO L93 Difference]: Finished difference Result 775 states and 840 transitions. [2025-03-04 09:38:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:38:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2025-03-04 09:38:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:19,472 INFO L225 Difference]: With dead ends: 775 [2025-03-04 09:38:19,472 INFO L226 Difference]: Without dead ends: 775 [2025-03-04 09:38:19,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:38:19,474 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 5 mSDsluCounter, 3606 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4331 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:19,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4331 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:38:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2025-03-04 09:38:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2025-03-04 09:38:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 483 states have (on average 1.679089026915114) internal successors, (811), 766 states have internal predecessors, (811), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:38:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 838 transitions. [2025-03-04 09:38:19,493 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 838 transitions. Word has length 66 [2025-03-04 09:38:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:19,493 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 838 transitions. [2025-03-04 09:38:19,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:38:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 838 transitions. [2025-03-04 09:38:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-04 09:38:19,494 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:19,494 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:19,510 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 09:38:19,694 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 09:38:19,695 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr326REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:19,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash 982736107, now seen corresponding path program 2 times [2025-03-04 09:38:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009664751] [2025-03-04 09:38:19,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:19,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:19,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:19,698 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 09:38:19,700 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 09:38:19,800 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-04 09:38:29,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-04 09:38:29,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:29,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:29,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 09:38:29,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:29,234 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:38:29,234 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 09:38:29,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:38:29,353 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:38:29,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2025-03-04 09:38:29,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2025-03-04 09:38:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 09:38:29,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:29,441 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:38:29,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2025-03-04 09:38:29,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009664751] [2025-03-04 09:38:29,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009664751] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:38:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [95016045] [2025-03-04 09:38:29,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:38:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:38:29,480 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 09:38:29,481 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 09:38:29,641 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-04 09:38:30,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-04 09:38:30,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:30,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:30,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:38:30,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:30,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [95016045] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:30,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:38:30,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:38:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114685931] [2025-03-04 09:38:30,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:30,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:38:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:30,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:38:30,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=551, Unknown=8, NotChecked=0, Total=650 [2025-03-04 09:38:30,471 INFO L87 Difference]: Start difference. First operand 773 states and 838 transitions. Second operand has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:38:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:34,703 INFO L93 Difference]: Finished difference Result 789 states and 861 transitions. [2025-03-04 09:38:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:38:34,703 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2025-03-04 09:38:34,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:34,705 INFO L225 Difference]: With dead ends: 789 [2025-03-04 09:38:34,705 INFO L226 Difference]: Without dead ends: 785 [2025-03-04 09:38:34,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2025-03-04 09:38:34,706 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 491 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 6212 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:34,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 6212 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-04 09:38:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2025-03-04 09:38:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 781. [2025-03-04 09:38:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 492 states have (on average 1.670731707317073) internal successors, (822), 774 states have internal predecessors, (822), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:38:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 849 transitions. [2025-03-04 09:38:34,722 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 849 transitions. Word has length 69 [2025-03-04 09:38:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:34,722 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 849 transitions. [2025-03-04 09:38:34,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.739130434782608) internal successors, (132), 23 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:38:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 849 transitions. [2025-03-04 09:38:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 09:38:34,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:34,725 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:34,732 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 09:38:34,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 09:38:35,129 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 09:38:35,129 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:35,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1867489132, now seen corresponding path program 1 times [2025-03-04 09:38:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375817794] [2025-03-04 09:38:35,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:38:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:35,132 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 09:38:35,132 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 09:38:35,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 09:38:35,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 09:38:35,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:38:35,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:35,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:38:35,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:35,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:35,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375817794] [2025-03-04 09:38:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375817794] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:35,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:38:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:38:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031345202] [2025-03-04 09:38:35,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:35,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:38:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:35,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:38:35,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:38:35,828 INFO L87 Difference]: Start difference. First operand 781 states and 849 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:38:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:38:36,904 INFO L93 Difference]: Finished difference Result 805 states and 888 transitions. [2025-03-04 09:38:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:38:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2025-03-04 09:38:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:38:36,906 INFO L225 Difference]: With dead ends: 805 [2025-03-04 09:38:36,906 INFO L226 Difference]: Without dead ends: 799 [2025-03-04 09:38:36,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 09:38:36,908 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 25 mSDsluCounter, 7944 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8669 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:38:36,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8669 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:38:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-04 09:38:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2025-03-04 09:38:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 510 states have (on average 1.6568627450980393) internal successors, (845), 792 states have internal predecessors, (845), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:38:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 872 transitions. [2025-03-04 09:38:36,917 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 872 transitions. Word has length 75 [2025-03-04 09:38:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:38:36,917 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 872 transitions. [2025-03-04 09:38:36,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 26 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:38:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 872 transitions. [2025-03-04 09:38:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:38:36,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:38:36,918 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:38:36,929 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 09:38:37,118 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 09:38:37,119 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr327REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:38:37,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:38:37,119 INFO L85 PathProgramCache]: Analyzing trace with hash -111377300, now seen corresponding path program 2 times [2025-03-04 09:38:37,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:38:37,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344859602] [2025-03-04 09:38:37,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:37,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:38:37,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:38:37,121 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 09:38:37,122 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 09:38:37,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-04 09:38:52,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:38:52,322 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:52,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:52,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-04 09:38:52,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:52,417 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:38:52,417 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 09:38:52,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 09:38:52,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:38:52,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:38:52,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-04 09:38:52,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:38:52,864 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:38:52,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:38:52,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:38:52,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:38:52,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:38:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-04 09:38:52,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:53,248 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1425 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1426 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1426) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1425 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_1425) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2025-03-04 09:38:53,253 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:38:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344859602] [2025-03-04 09:38:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344859602] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:38:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1904463514] [2025-03-04 09:38:53,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:38:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:38:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:38:53,255 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:38:53,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-03-04 09:38:53,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-04 09:38:54,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:38:54,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:38:54,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:38:54,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-04 09:38:54,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:38:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:54,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:38:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:38:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1904463514] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:38:56,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:38:56,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-04 09:38:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858441819] [2025-03-04 09:38:56,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:38:56,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-04 09:38:56,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:38:56,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-04 09:38:56,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-03-04 09:38:56,319 INFO L87 Difference]: Start difference. First operand 799 states and 872 transitions. Second operand has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:39:15,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:39:15,227 INFO L93 Difference]: Finished difference Result 844 states and 948 transitions. [2025-03-04 09:39:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-03-04 09:39:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2025-03-04 09:39:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:39:15,229 INFO L225 Difference]: With dead ends: 844 [2025-03-04 09:39:15,229 INFO L226 Difference]: Without dead ends: 834 [2025-03-04 09:39:15,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3205, Invalid=15430, Unknown=1, NotChecked=270, Total=18906 [2025-03-04 09:39:15,233 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 517 mSDsluCounter, 15997 mSDsCounter, 0 mSdLazyCounter, 12281 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 16491 SdHoareTripleChecker+Invalid, 12338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 12281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:39:15,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 16491 Invalid, 12338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 12281 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2025-03-04 09:39:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2025-03-04 09:39:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2025-03-04 09:39:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 546 states have (on average 1.6263736263736264) internal successors, (888), 827 states have internal predecessors, (888), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-04 09:39:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 915 transitions. [2025-03-04 09:39:15,241 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 915 transitions. Word has length 87 [2025-03-04 09:39:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:39:15,241 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 915 transitions. [2025-03-04 09:39:15,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.9473684210526314) internal successors, (168), 58 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 09:39:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 915 transitions. [2025-03-04 09:39:15,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-04 09:39:15,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:39:15,242 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:39:15,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2025-03-04 09:39:15,465 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 09:39:15,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:15,643 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr323REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2025-03-04 09:39:15,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:39:15,643 INFO L85 PathProgramCache]: Analyzing trace with hash 661329097, now seen corresponding path program 1 times [2025-03-04 09:39:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:39:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24315005] [2025-03-04 09:39:15,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:15,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:39:15,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:39:15,645 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 09:39:15,646 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 09:39:15,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-04 09:39:15,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-04 09:39:15,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:39:15,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:39:15,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 111 conjuncts are in the unsatisfiable core [2025-03-04 09:39:15,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:39:16,002 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 09:39:16,062 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 09:39:16,073 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:39:16,073 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 09:39:16,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:39:16,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:39:16,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2025-03-04 09:39:16,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:39:16,577 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:39:16,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:39:16,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:39:16,642 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:39:16,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:39:16,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:39:16,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:39:16,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:39:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2025-03-04 09:39:16,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:39:16,754 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2098) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-04 09:39:16,773 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2098) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv4 32)) (bvadd .cse2 (_ bv8 32)))))))) is different from false [2025-03-04 09:39:17,553 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2190 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2191 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2191) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2190) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2098 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2099 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2190 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2191 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2190))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2191) .cse2 v_ArrVal_2099) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_2098) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2025-03-04 09:39:17,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:39:17,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24315005] [2025-03-04 09:39:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24315005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:39:17,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [799696071] [2025-03-04 09:39:17,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:39:17,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:39:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:39:17,562 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 09:39:17,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2025-03-04 09:39:17,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes.