./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_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_JEN_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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:26:38,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:26:38,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:26:38,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:26:38,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:26:38,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:26:38,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:26:38,735 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:26:38,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:26:38,735 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:26:38,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:26:38,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:26:38,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:26:38,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:26:38,736 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:26:38,737 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:26:38,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:26:38,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:26:38,737 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 -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2025-03-04 09:26:38,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:26:38,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:26:38,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:26:38,947 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:26:38,947 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:26:38,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-04 09:26:40,048 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf3f1111/b3747c805bd14d7580369aac540ac99f/FLAGba46c48b6 [2025-03-04 09:26:40,434 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:26:40,434 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-04 09:26:40,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf3f1111/b3747c805bd14d7580369aac540ac99f/FLAGba46c48b6 [2025-03-04 09:26:40,621 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caf3f1111/b3747c805bd14d7580369aac540ac99f [2025-03-04 09:26:40,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:26:40,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:26:40,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:26:40,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:26:40,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:26:40,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:26:40" (1/1) ... [2025-03-04 09:26:40,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d023e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:40, skipping insertion in model container [2025-03-04 09:26:40,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:26:40" (1/1) ... [2025-03-04 09:26:40,651 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:26:40,928 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 09:26:40,958 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 09:26:40,961 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 09:26:40,964 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 09:26:40,967 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 09:26:40,974 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 09:26:40,975 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 09:26:40,978 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 09:26:40,979 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 09:26:40,982 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 09:26:40,982 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 09:26:40,986 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 09:26:40,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:26:41,006 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 09:26:41,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30041ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:41, skipping insertion in model container [2025-03-04 09:26:41,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:26:41,007 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 09:26:41,009 INFO L158 Benchmark]: Toolchain (without parser) took 384.98ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 104.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:26:41,010 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:26:41,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.41ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 104.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:26:41,011 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 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.41ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 104.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. 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_JEN_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 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:26:42,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:26:42,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:26:42,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:26:42,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:26:42,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:26:42,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:26:42,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:26:42,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:26:42,776 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:26:42,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:26:42,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:26:42,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:26:42,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:26:42,777 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:26:42,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:26:42,777 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:26:42,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:26:42,778 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:26:42,779 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:26:42,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:26:42,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:26:42,780 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:26:42,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:26:42,780 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:26:42,780 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:26:42,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:26:42,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:26:42,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:26:42,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:26:42,781 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 -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2025-03-04 09:26:42,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:26:42,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:26:42,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:26:42,981 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:26:42,982 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:26:42,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-04 09:26:44,101 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e40d5397c/75f0f4709d4a4b2d80cf21da999cc2b5/FLAG0784e64ae [2025-03-04 09:26:44,421 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:26:44,421 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2025-03-04 09:26:44,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e40d5397c/75f0f4709d4a4b2d80cf21da999cc2b5/FLAG0784e64ae [2025-03-04 09:26:44,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e40d5397c/75f0f4709d4a4b2d80cf21da999cc2b5 [2025-03-04 09:26:44,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:26:44,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:26:44,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:26:44,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:26:44,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:26:44,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:26:44" (1/1) ... [2025-03-04 09:26:44,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16bbb9c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:44, skipping insertion in model container [2025-03-04 09:26:44,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:26:44" (1/1) ... [2025-03-04 09:26:44,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:26:44,757 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 09:26:44,787 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 09:26:44,790 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 09:26:44,793 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 09:26:44,798 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 09:26:44,807 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 09:26:44,808 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 09:26:44,810 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 09:26:44,811 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 09:26:44,811 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 09:26:44,812 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 09:26:44,816 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 09:26:44,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:26:44,835 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 09:26:44,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:26:44,872 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 09:26:44,892 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 09:26:44,898 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 09:26:44,900 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 09:26:44,903 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 09:26:44,912 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 09:26:44,913 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 09:26:44,917 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 09:26:44,918 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 09:26:44,918 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 09:26:44,919 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 09:26:44,924 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 09:26:44,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:26:44,929 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:26:44,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:26:45,021 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:26:45,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45 WrapperNode [2025-03-04 09:26:45,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:26:45,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:26:45,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:26:45,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:26:45,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,075 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 774 [2025-03-04 09:26:45,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:26:45,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:26:45,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:26:45,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:26:45,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,102 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,153 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 09:26:45,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,178 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:26:45,188 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:26:45,188 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:26:45,188 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:26:45,189 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (1/1) ... [2025-03-04 09:26:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:26:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:45,218 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 09:26:45,219 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 09:26:45,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:26:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:26:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:26:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:26:45,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:26:45,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:26:45,385 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:26:45,386 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:26:47,554 INFO L? ?]: Removed 904 outVars from TransFormulas that were not future-live. [2025-03-04 09:26:47,554 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:26:47,582 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:26:47,585 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:26:47,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:26:47 BoogieIcfgContainer [2025-03-04 09:26:47,586 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:26:47,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:26:47,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:26:47,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:26:47,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:26:44" (1/3) ... [2025-03-04 09:26:47,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265cdad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:26:47, skipping insertion in model container [2025-03-04 09:26:47,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:26:45" (2/3) ... [2025-03-04 09:26:47,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265cdad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:26:47, skipping insertion in model container [2025-03-04 09:26:47,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:26:47" (3/3) ... [2025-03-04 09:26:47,593 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2025-03-04 09:26:47,605 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:26:47,607 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test1-2.i that has 4 procedures, 856 locations, 1 initial locations, 24 loop locations, and 425 error locations. [2025-03-04 09:26:47,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:26:47,656 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;@5ac4cbdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:26:47,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2025-03-04 09:26:47,661 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 09:26:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:26:47,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:47,665 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:26:47,665 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 09:26:47,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:47,669 INFO L85 PathProgramCache]: Analyzing trace with hash 943127406, now seen corresponding path program 1 times [2025-03-04 09:26:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:47,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568756080] [2025-03-04 09:26:47,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:47,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:47,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:47,681 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 09:26:47,682 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 09:26:47,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:26:47,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:26:47,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:47,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:47,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 09:26:47,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:47,842 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 09:26:47,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:47,843 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568756080] [2025-03-04 09:26:47,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568756080] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:47,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:47,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:26:47,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274341071] [2025-03-04 09:26:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:47,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:26:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:47,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:26:47,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:47,890 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 09:26:48,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:48,548 INFO L93 Difference]: Finished difference Result 1148 states and 1248 transitions. [2025-03-04 09:26:48,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:26:48,550 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 09:26:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:48,562 INFO L225 Difference]: With dead ends: 1148 [2025-03-04 09:26:48,562 INFO L226 Difference]: Without dead ends: 1146 [2025-03-04 09:26:48,563 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 09:26:48,565 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 328 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 09:26:48,566 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 09:26:48,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2025-03-04 09:26:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 921. [2025-03-04 09:26:48,622 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 09:26:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1047 transitions. [2025-03-04 09:26:48,632 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1047 transitions. Word has length 5 [2025-03-04 09:26:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:48,633 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1047 transitions. [2025-03-04 09:26:48,633 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 09:26:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1047 transitions. [2025-03-04 09:26:48,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:26:48,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:48,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:26:48,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 09:26:48,838 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 09:26:48,838 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 09:26:48,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash 943775834, now seen corresponding path program 1 times [2025-03-04 09:26:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360859381] [2025-03-04 09:26:48,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:48,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:48,841 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 09:26:48,842 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 09:26:48,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:26:48,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:26:48,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:48,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:48,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:26:48,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:48,940 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 09:26:48,948 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 09:26:48,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:48,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360859381] [2025-03-04 09:26:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360859381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:48,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:26:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268487308] [2025-03-04 09:26:48,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:48,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:26:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:48,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:26:48,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:26:48,950 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 09:26:49,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:49,831 INFO L93 Difference]: Finished difference Result 872 states and 993 transitions. [2025-03-04 09:26:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:26:49,831 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 09:26:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:49,834 INFO L225 Difference]: With dead ends: 872 [2025-03-04 09:26:49,834 INFO L226 Difference]: Without dead ends: 872 [2025-03-04 09:26:49,835 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 09:26:49,835 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, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:49,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 650 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:26:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2025-03-04 09:26:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2025-03-04 09:26:49,849 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 09:26:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 993 transitions. [2025-03-04 09:26:49,852 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 993 transitions. Word has length 5 [2025-03-04 09:26:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:49,852 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 993 transitions. [2025-03-04 09:26:49,852 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 09:26:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 993 transitions. [2025-03-04 09:26:49,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:26:49,852 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:49,852 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:26:49,858 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 09:26:50,053 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 09:26:50,053 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 09:26:50,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 943775835, now seen corresponding path program 1 times [2025-03-04 09:26:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1421940603] [2025-03-04 09:26:50,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:50,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:50,056 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 09:26:50,056 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 09:26:50,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:26:50,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:26:50,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:50,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:50,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:26:50,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:50,134 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 09:26:50,151 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 09:26:50,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:50,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421940603] [2025-03-04 09:26:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421940603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:50,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:50,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:26:50,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382066784] [2025-03-04 09:26:50,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:50,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:26:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:50,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:26:50,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:26:50,152 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 09:26:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:51,195 INFO L93 Difference]: Finished difference Result 946 states and 1066 transitions. [2025-03-04 09:26:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:26:51,196 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 09:26:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:51,198 INFO L225 Difference]: With dead ends: 946 [2025-03-04 09:26:51,199 INFO L226 Difference]: Without dead ends: 946 [2025-03-04 09:26:51,199 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 09:26:51,199 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 09:26:51,200 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 09:26:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2025-03-04 09:26:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 899. [2025-03-04 09:26:51,210 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 09:26:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1052 transitions. [2025-03-04 09:26:51,213 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1052 transitions. Word has length 5 [2025-03-04 09:26:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:51,213 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1052 transitions. [2025-03-04 09:26:51,213 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 09:26:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1052 transitions. [2025-03-04 09:26:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:26:51,213 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:51,213 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:51,220 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 09:26:51,414 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 09:26:51,414 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 09:26:51,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1035921072, now seen corresponding path program 1 times [2025-03-04 09:26:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76205728] [2025-03-04 09:26:51,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:51,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:51,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:51,417 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 09:26:51,418 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 09:26:51,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:26:51,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:26:51,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:51,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:51,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 09:26:51,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:51,501 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 09:26:51,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:51,502 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76205728] [2025-03-04 09:26:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76205728] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:51,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:51,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:26:51,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684451171] [2025-03-04 09:26:51,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:51,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:26:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:51,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:26:51,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:26:51,503 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 09:26:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:52,205 INFO L93 Difference]: Finished difference Result 900 states and 1052 transitions. [2025-03-04 09:26:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:26:52,205 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 09:26:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:52,208 INFO L225 Difference]: With dead ends: 900 [2025-03-04 09:26:52,210 INFO L226 Difference]: Without dead ends: 895 [2025-03-04 09:26:52,210 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 09:26:52,211 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 09:26:52,212 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 09:26:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-03-04 09:26:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2025-03-04 09:26:52,227 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 09:26:52,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1047 transitions. [2025-03-04 09:26:52,230 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1047 transitions. Word has length 8 [2025-03-04 09:26:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:52,230 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1047 transitions. [2025-03-04 09:26:52,230 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 09:26:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1047 transitions. [2025-03-04 09:26:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:26:52,230 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:52,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:52,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:26:52,435 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 09:26:52,435 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 09:26:52,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash -81503881, now seen corresponding path program 1 times [2025-03-04 09:26:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144505421] [2025-03-04 09:26:52,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:52,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:52,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:52,437 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 09:26:52,438 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 09:26:52,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:26:52,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:26:52,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:52,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:52,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:26:52,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:52,532 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 09:26:52,553 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 09:26:52,553 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:52,553 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:52,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144505421] [2025-03-04 09:26:52,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144505421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:52,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:52,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:26:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630740652] [2025-03-04 09:26:52,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:26:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:52,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:26:52,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:52,554 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 09:26:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:53,813 INFO L93 Difference]: Finished difference Result 880 states and 1009 transitions. [2025-03-04 09:26:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:26:53,813 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 09:26:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:53,816 INFO L225 Difference]: With dead ends: 880 [2025-03-04 09:26:53,817 INFO L226 Difference]: Without dead ends: 880 [2025-03-04 09:26:53,817 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 09:26:53,818 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, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:53,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 950 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:26:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2025-03-04 09:26:53,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 872. [2025-03-04 09:26:53,831 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 09:26:53,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1001 transitions. [2025-03-04 09:26:53,833 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1001 transitions. Word has length 10 [2025-03-04 09:26:53,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:53,834 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1001 transitions. [2025-03-04 09:26:53,834 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 09:26:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1001 transitions. [2025-03-04 09:26:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:26:53,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:53,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:26:53,841 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 09:26:54,035 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 09:26:54,035 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 09:26:54,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash -81503880, now seen corresponding path program 1 times [2025-03-04 09:26:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024649503] [2025-03-04 09:26:54,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:54,038 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 09:26:54,040 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 09:26:54,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:26:54,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:26:54,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:54,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:54,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 09:26:54,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:54,142 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 09:26:54,188 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 09:26:54,188 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:26:54,188 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024649503] [2025-03-04 09:26:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024649503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:26:54,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:26:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:26:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852231395] [2025-03-04 09:26:54,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:26:54,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:26:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:54,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:26:54,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:26:54,189 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 09:26:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:26:55,497 INFO L93 Difference]: Finished difference Result 1049 states and 1169 transitions. [2025-03-04 09:26:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:26:55,498 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 09:26:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:26:55,501 INFO L225 Difference]: With dead ends: 1049 [2025-03-04 09:26:55,501 INFO L226 Difference]: Without dead ends: 1049 [2025-03-04 09:26:55,501 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 09:26:55,501 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 384 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:26:55,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1557 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:26:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2025-03-04 09:26:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 986. [2025-03-04 09:26:55,513 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 09:26:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1139 transitions. [2025-03-04 09:26:55,515 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1139 transitions. Word has length 10 [2025-03-04 09:26:55,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:26:55,515 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1139 transitions. [2025-03-04 09:26:55,515 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 09:26:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1139 transitions. [2025-03-04 09:26:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-04 09:26:55,516 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:26:55,516 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 09:26:55,523 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 09:26:55,716 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 09:26:55,717 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 09:26:55,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:26:55,718 INFO L85 PathProgramCache]: Analyzing trace with hash 786870366, now seen corresponding path program 1 times [2025-03-04 09:26:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:26:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082048287] [2025-03-04 09:26:55,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:26:55,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:26:55,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:26:55,723 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 09:26:55,725 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 09:26:55,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-04 09:26:55,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 09:26:55,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:26:55,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:26:55,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:26:55,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:26:55,863 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 09:26:56,023 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 09:26:56,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:26:56,330 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 09:26:56,330 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:26:56,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082048287] [2025-03-04 09:26:56,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082048287] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:26:56,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:26:56,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-04 09:26:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623861207] [2025-03-04 09:26:56,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:26:56,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:26:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:26:56,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:26:56,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:26:56,331 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 09:27:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:00,290 INFO L93 Difference]: Finished difference Result 1405 states and 1659 transitions. [2025-03-04 09:27:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:27:00,291 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 09:27:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:00,294 INFO L225 Difference]: With dead ends: 1405 [2025-03-04 09:27:00,294 INFO L226 Difference]: Without dead ends: 1405 [2025-03-04 09:27:00,295 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 09:27:00,296 INFO L435 NwaCegarLoop]: 807 mSDtfsCounter, 1504 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:27:00,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 2538 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-04 09:27:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2025-03-04 09:27:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1150. [2025-03-04 09:27:00,311 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 09:27:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1371 transitions. [2025-03-04 09:27:00,313 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1371 transitions. Word has length 29 [2025-03-04 09:27:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:00,314 INFO L471 AbstractCegarLoop]: Abstraction has 1150 states and 1371 transitions. [2025-03-04 09:27:00,314 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 09:27:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1371 transitions. [2025-03-04 09:27:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-04 09:27:00,316 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:00,316 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 09:27:00,327 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 09:27:00,517 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 09:27:00,517 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 09:27:00,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1556394879, now seen corresponding path program 1 times [2025-03-04 09:27:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130394327] [2025-03-04 09:27:00,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:00,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:00,520 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 09:27:00,521 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 09:27:00,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-04 09:27:00,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-04 09:27:00,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:00,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:00,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:27:00,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:00,686 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 09:27:00,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:27:00,687 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:00,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130394327] [2025-03-04 09:27:00,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130394327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:27:00,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:27:00,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:27:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015344723] [2025-03-04 09:27:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:27:00,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:27:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:00,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:27:00,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:27:00,688 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 09:27:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:00,753 INFO L93 Difference]: Finished difference Result 839 states and 935 transitions. [2025-03-04 09:27:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:27:00,753 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 09:27:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:00,755 INFO L225 Difference]: With dead ends: 839 [2025-03-04 09:27:00,755 INFO L226 Difference]: Without dead ends: 839 [2025-03-04 09:27:00,756 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 09:27:00,756 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 09:27:00,756 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 09:27:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2025-03-04 09:27:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 837. [2025-03-04 09:27:00,766 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 09:27:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 933 transitions. [2025-03-04 09:27:00,768 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 933 transitions. Word has length 44 [2025-03-04 09:27:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:00,768 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 933 transitions. [2025-03-04 09:27:00,768 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 09:27:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 933 transitions. [2025-03-04 09:27:00,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-03-04 09:27:00,772 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:00,772 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 09:27:00,782 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 09:27:00,972 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 09:27:00,973 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 09:27:00,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 591851959, now seen corresponding path program 1 times [2025-03-04 09:27:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344379223] [2025-03-04 09:27:00,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:00,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:00,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:00,975 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 09:27:00,977 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 09:27:01,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-03-04 09:27:01,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-03-04 09:27:01,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:01,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:01,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 09:27:01,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:01,140 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 09:27:01,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:27:01,470 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 09:27:01,485 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:27:01,486 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 09:27:01,491 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 09:27:01,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:27:01,491 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344379223] [2025-03-04 09:27:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344379223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:27:01,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:27:01,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:27:01,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388453326] [2025-03-04 09:27:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:27:01,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:27:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:01,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:27:01,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:27:01,493 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 09:27:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:02,631 INFO L93 Difference]: Finished difference Result 799 states and 895 transitions. [2025-03-04 09:27:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:27:02,632 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 09:27:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:02,634 INFO L225 Difference]: With dead ends: 799 [2025-03-04 09:27:02,634 INFO L226 Difference]: Without dead ends: 799 [2025-03-04 09:27:02,634 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 09:27:02,634 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 09:27:02,634 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 09:27:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-04 09:27:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 762. [2025-03-04 09:27:02,641 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 09:27:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 821 transitions. [2025-03-04 09:27:02,642 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 821 transitions. Word has length 52 [2025-03-04 09:27:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:02,643 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 821 transitions. [2025-03-04 09:27:02,643 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 09:27:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 821 transitions. [2025-03-04 09:27:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-04 09:27:02,643 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:02,643 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 09:27:02,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 09:27:02,844 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 09:27:02,844 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 09:27:02,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1753738290, now seen corresponding path program 1 times [2025-03-04 09:27:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735728857] [2025-03-04 09:27:02,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:02,846 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 09:27:02,848 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 09:27:02,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-04 09:27:02,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-04 09:27:02,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:02,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:03,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:27:03,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:03,012 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 09:27:03,022 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 09:27:03,041 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 09:27:03,048 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 09:27:03,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:27:03,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735728857] [2025-03-04 09:27:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735728857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:27:03,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:27:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:27:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83609777] [2025-03-04 09:27:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:27:03,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:27:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:03,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:27:03,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:27:03,050 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 09:27:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:04,103 INFO L93 Difference]: Finished difference Result 761 states and 820 transitions. [2025-03-04 09:27:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:27:04,103 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 09:27:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:04,105 INFO L225 Difference]: With dead ends: 761 [2025-03-04 09:27:04,105 INFO L226 Difference]: Without dead ends: 761 [2025-03-04 09:27:04,105 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 09:27:04,105 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 09:27:04,106 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 09:27:04,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-03-04 09:27:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2025-03-04 09:27:04,113 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 09:27:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 820 transitions. [2025-03-04 09:27:04,114 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 820 transitions. Word has length 57 [2025-03-04 09:27:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:04,114 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 820 transitions. [2025-03-04 09:27:04,114 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 09:27:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 820 transitions. [2025-03-04 09:27:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-04 09:27:04,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:04,115 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 09:27:04,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 09:27:04,315 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 09:27:04,316 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 09:27:04,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1753738289, now seen corresponding path program 1 times [2025-03-04 09:27:04,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:04,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [490648059] [2025-03-04 09:27:04,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:04,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:04,318 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 09:27:04,319 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 09:27:04,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-04 09:27:04,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-04 09:27:04,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:04,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:04,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 09:27:04,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:04,487 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 09:27:04,528 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 09:27:04,534 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 09:27:04,565 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 09:27:04,578 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 09:27:04,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:27:04,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:04,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490648059] [2025-03-04 09:27:04,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490648059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:27:04,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:27:04,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:27:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583653897] [2025-03-04 09:27:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:27:04,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:27:04,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:04,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:27:04,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:27:04,580 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 09:27:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:05,796 INFO L93 Difference]: Finished difference Result 760 states and 819 transitions. [2025-03-04 09:27:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:27:05,796 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 09:27:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:05,798 INFO L225 Difference]: With dead ends: 760 [2025-03-04 09:27:05,798 INFO L226 Difference]: Without dead ends: 760 [2025-03-04 09:27:05,798 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 09:27:05,799 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 1 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:27:05,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1902 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:27:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2025-03-04 09:27:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2025-03-04 09:27:05,805 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 09:27:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 819 transitions. [2025-03-04 09:27:05,807 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 819 transitions. Word has length 57 [2025-03-04 09:27:05,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:05,808 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 819 transitions. [2025-03-04 09:27:05,808 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 09:27:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 819 transitions. [2025-03-04 09:27:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:27:05,808 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:05,808 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 09:27:05,819 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 09:27:06,008 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 09:27:06,009 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 09:27:06,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash -776460821, now seen corresponding path program 1 times [2025-03-04 09:27:06,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:06,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074164806] [2025-03-04 09:27:06,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:06,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:06,011 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 09:27:06,013 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 09:27:06,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:27:06,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:27:06,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:06,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:06,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 09:27:06,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:06,178 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 09:27:06,232 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 09:27:06,242 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 09:27:06,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:27:06,242 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:06,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074164806] [2025-03-04 09:27:06,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074164806] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:27:06,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:27:06,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:27:06,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899568714] [2025-03-04 09:27:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:27:06,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:27:06,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:06,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:27:06,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:27:06,244 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 09:27:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:07,617 INFO L93 Difference]: Finished difference Result 772 states and 834 transitions. [2025-03-04 09:27:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:27:07,618 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 09:27:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:07,620 INFO L225 Difference]: With dead ends: 772 [2025-03-04 09:27:07,620 INFO L226 Difference]: Without dead ends: 772 [2025-03-04 09:27:07,620 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 09:27:07,620 INFO L435 NwaCegarLoop]: 711 mSDtfsCounter, 12 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:27:07,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2528 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:27:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2025-03-04 09:27:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 766. [2025-03-04 09:27:07,632 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 09:27:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 829 transitions. [2025-03-04 09:27:07,633 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 829 transitions. Word has length 65 [2025-03-04 09:27:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:07,634 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 829 transitions. [2025-03-04 09:27:07,634 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 09:27:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 829 transitions. [2025-03-04 09:27:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-04 09:27:07,634 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:07,634 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 09:27:07,644 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 09:27:07,834 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 09:27:07,835 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 09:27:07,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash -776460820, now seen corresponding path program 1 times [2025-03-04 09:27:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36695953] [2025-03-04 09:27:07,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:07,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:07,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:07,838 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 09:27:07,839 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 09:27:07,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-04 09:27:08,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-04 09:27:08,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:08,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:08,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:27:08,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:08,032 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 09:27:08,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:27:08,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36695953] [2025-03-04 09:27:08,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36695953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:27:08,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:27:08,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:27:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986004371] [2025-03-04 09:27:08,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:27:08,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:27:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:08,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:27:08,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:27:08,034 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 09:27:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:08,062 INFO L93 Difference]: Finished difference Result 763 states and 823 transitions. [2025-03-04 09:27:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:27:08,063 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 09:27:08,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:08,065 INFO L225 Difference]: With dead ends: 763 [2025-03-04 09:27:08,067 INFO L226 Difference]: Without dead ends: 763 [2025-03-04 09:27:08,067 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 09:27:08,068 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 09:27:08,068 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 09:27:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-04 09:27:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2025-03-04 09:27:08,080 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 09:27:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 823 transitions. [2025-03-04 09:27:08,081 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 823 transitions. Word has length 65 [2025-03-04 09:27:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:08,082 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 823 transitions. [2025-03-04 09:27:08,082 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 09:27:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 823 transitions. [2025-03-04 09:27:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-04 09:27:08,082 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:08,082 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 09:27:08,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-04 09:27:08,282 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 09:27:08,283 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 09:27:08,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash -181213625, now seen corresponding path program 1 times [2025-03-04 09:27:08,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:08,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7292744] [2025-03-04 09:27:08,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:08,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:08,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:08,285 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 09:27:08,287 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 09:27:08,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-04 09:27:08,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-04 09:27:08,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:08,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:08,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 09:27:08,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:08,473 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 09:27:08,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:27:08,516 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 09:27:08,516 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7292744] [2025-03-04 09:27:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7292744] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:27:08,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:27:08,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-04 09:27:08,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388167118] [2025-03-04 09:27:08,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:27:08,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 09:27:08,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:08,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 09:27:08,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-04 09:27:08,535 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 09:27:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:08,652 INFO L93 Difference]: Finished difference Result 775 states and 840 transitions. [2025-03-04 09:27:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:27:08,653 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 09:27:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:08,655 INFO L225 Difference]: With dead ends: 775 [2025-03-04 09:27:08,655 INFO L226 Difference]: Without dead ends: 775 [2025-03-04 09:27:08,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:27:08,656 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 09:27:08,656 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 09:27:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2025-03-04 09:27:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2025-03-04 09:27:08,663 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 09:27:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 838 transitions. [2025-03-04 09:27:08,665 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 838 transitions. Word has length 66 [2025-03-04 09:27:08,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:08,665 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 838 transitions. [2025-03-04 09:27:08,665 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 09:27:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 838 transitions. [2025-03-04 09:27:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-04 09:27:08,666 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:08,666 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 09:27:08,676 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 09:27:08,866 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 09:27:08,867 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 09:27:08,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 982736107, now seen corresponding path program 2 times [2025-03-04 09:27:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390687472] [2025-03-04 09:27:08,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:27:08,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:08,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:08,870 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 09:27:08,872 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 09:27:08,979 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-04 09:27:17,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-04 09:27:17,815 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:27:17,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:17,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 09:27:17,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:17,882 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:27:17,883 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 09:27:17,893 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 09:27:18,004 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:27:18,004 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 09:27:18,028 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 09:27:18,039 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 09:27:18,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:27:18,091 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-04 09:27:18,091 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 09:27:18,131 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390687472] [2025-03-04 09:27:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390687472] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:27:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2022508748] [2025-03-04 09:27:18,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:27:18,131 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:27:18,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:27:18,134 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 09:27:18,134 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 09:27:18,287 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 69 statements into 2 equivalence classes. [2025-03-04 09:27:18,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-03-04 09:27:18,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:27:18,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:18,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 09:27:18,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:18,945 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 09:27:18,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:27:19,127 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 09:27:19,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2022508748] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:27:19,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:27:19,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-04 09:27:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056893057] [2025-03-04 09:27:19,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:27:19,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:27:19,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:19,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:27:19,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=551, Unknown=8, NotChecked=0, Total=650 [2025-03-04 09:27:19,129 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 09:27:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:23,219 INFO L93 Difference]: Finished difference Result 789 states and 861 transitions. [2025-03-04 09:27:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-04 09:27:23,219 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 09:27:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:23,221 INFO L225 Difference]: With dead ends: 789 [2025-03-04 09:27:23,221 INFO L226 Difference]: Without dead ends: 785 [2025-03-04 09:27:23,222 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 09:27:23,222 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 491 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:27:23,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 6212 Invalid, 4457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-04 09:27:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2025-03-04 09:27:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 781. [2025-03-04 09:27:23,229 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 09:27:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 849 transitions. [2025-03-04 09:27:23,231 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 849 transitions. Word has length 69 [2025-03-04 09:27:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:23,231 INFO L471 AbstractCegarLoop]: Abstraction has 781 states and 849 transitions. [2025-03-04 09:27:23,231 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 09:27:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 849 transitions. [2025-03-04 09:27:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-04 09:27:23,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:23,232 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 09:27:23,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2025-03-04 09:27:23,454 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 09:27:23,632 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 09:27:23,633 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 09:27:23,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1867489132, now seen corresponding path program 1 times [2025-03-04 09:27:23,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788070263] [2025-03-04 09:27:23,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:27:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:23,635 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 09:27:23,636 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 09:27:23,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-04 09:27:23,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-04 09:27:23,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:27:23,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:23,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 09:27:23,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:23,934 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 09:27:23,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:27:24,271 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 09:27:24,271 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788070263] [2025-03-04 09:27:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788070263] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:27:24,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:27:24,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-04 09:27:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248144700] [2025-03-04 09:27:24,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:27:24,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-04 09:27:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:24,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-04 09:27:24,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-04 09:27:24,272 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 09:27:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:27:25,301 INFO L93 Difference]: Finished difference Result 805 states and 888 transitions. [2025-03-04 09:27:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 09:27:25,302 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 09:27:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:27:25,304 INFO L225 Difference]: With dead ends: 805 [2025-03-04 09:27:25,304 INFO L226 Difference]: Without dead ends: 799 [2025-03-04 09:27:25,304 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 09:27:25,304 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, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:27:25,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8669 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:27:25,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2025-03-04 09:27:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2025-03-04 09:27:25,311 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 09:27:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 872 transitions. [2025-03-04 09:27:25,313 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 872 transitions. Word has length 75 [2025-03-04 09:27:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:27:25,313 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 872 transitions. [2025-03-04 09:27:25,313 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 09:27:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 872 transitions. [2025-03-04 09:27:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:27:25,313 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:27:25,313 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 09:27:25,324 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 09:27:25,514 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 09:27:25,514 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 09:27:25,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:27:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -111377300, now seen corresponding path program 2 times [2025-03-04 09:27:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:27:25,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163585378] [2025-03-04 09:27:25,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:27:25,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:27:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:27:25,518 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 09:27:25,520 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 09:27:25,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-04 09:27:40,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:27:40,319 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:27:40,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:40,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-04 09:27:40,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:40,414 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:27:40,414 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 09:27:40,418 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 09:27:40,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 09:27:40,460 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 09:27:40,520 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 09:27:40,524 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 09:27:40,796 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:27:40,796 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 09:27:40,803 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 09:27:40,827 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 09:27:40,831 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 09:27:40,846 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 09:27:40,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:27:41,126 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 09:27:41,129 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:27:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163585378] [2025-03-04 09:27:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163585378] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:27:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [808547410] [2025-03-04 09:27:41,129 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 09:27:41,129 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:27:41,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:27:41,131 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 09:27:41,132 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 09:27:41,334 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 87 statements into 2 equivalence classes. [2025-03-04 09:27:41,889 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:27:41,889 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 09:27:41,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:27:41,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-04 09:27:41,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:27:42,515 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 09:27:42,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:27:44,070 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 09:27:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [808547410] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 09:27:44,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 09:27:44,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-04 09:27:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789998306] [2025-03-04 09:27:44,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 09:27:44,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-04 09:27:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:27:44,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-04 09:27:44,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2025-03-04 09:27:44,072 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 09:28:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:28:01,895 INFO L93 Difference]: Finished difference Result 844 states and 948 transitions. [2025-03-04 09:28:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-03-04 09:28:01,896 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 09:28:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:28:01,897 INFO L225 Difference]: With dead ends: 844 [2025-03-04 09:28:01,897 INFO L226 Difference]: Without dead ends: 834 [2025-03-04 09:28:01,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3205, Invalid=15430, Unknown=1, NotChecked=270, Total=18906 [2025-03-04 09:28:01,901 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 517 mSDsluCounter, 15997 mSDsCounter, 0 mSdLazyCounter, 12281 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s 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, 12.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:28:01,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 16491 Invalid, 12338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 12281 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2025-03-04 09:28:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2025-03-04 09:28:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2025-03-04 09:28:01,907 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 09:28:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 915 transitions. [2025-03-04 09:28:01,908 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 915 transitions. Word has length 87 [2025-03-04 09:28:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:28:01,908 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 915 transitions. [2025-03-04 09:28:01,908 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 09:28:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 915 transitions. [2025-03-04 09:28:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-04 09:28:01,909 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:28:01,909 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 09:28:01,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2025-03-04 09:28:02,132 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 09:28:02,309 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 09:28:02,309 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 09:28:02,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:28:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 661329097, now seen corresponding path program 1 times [2025-03-04 09:28:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:28:02,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283943603] [2025-03-04 09:28:02,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:02,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:28:02,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:28:02,312 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 09:28:02,313 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 09:28:02,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-04 09:28:02,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-04 09:28:02,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:28:02,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:28:02,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 111 conjuncts are in the unsatisfiable core [2025-03-04 09:28:02,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:28:02,642 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 09:28:02,690 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 09:28:02,702 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 09:28:02,702 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 09:28:02,719 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 09:28:02,724 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 09:28:02,775 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 09:28:02,777 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 09:28:03,182 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:28:03,182 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 09:28:03,188 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 09:28:03,241 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:28:03,241 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 09:28:03,245 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 09:28:03,261 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 09:28:03,270 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 09:28:03,294 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 09:28:03,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:28:03,363 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 09:28:03,384 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 09:28:04,105 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 09:28:04,111 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:28:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283943603] [2025-03-04 09:28:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283943603] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:28:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [126744679] [2025-03-04 09:28:04,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:28:04,111 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 09:28:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 09:28:04,113 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 09:28:04,114 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 09:28:04,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes.