./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 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_BER_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:37:28,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:37:28,403 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:37:28,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:37:28,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:37:28,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:37:28,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:37:28,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:37:28,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:37:28,434 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:37:28,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:37:28,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:37:28,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:37:28,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:37:28,435 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:37:28,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:37:28,436 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:37:28,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:37:28,436 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:37:28,436 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:37:28,437 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:37:28,437 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:37:28,438 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:37:28,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:37:28,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:37:28,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:37:28,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:37:28,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:37:28,439 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 -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2025-03-17 13:37:28,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:37:28,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:37:28,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:37:28,673 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:37:28,674 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:37:28,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2025-03-17 13:37:29,869 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40efecc7f/34b2a6b8800a4290833a14bc9cfe01cd/FLAGcb935b6c5 [2025-03-17 13:37:30,181 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:37:30,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2025-03-17 13:37:30,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40efecc7f/34b2a6b8800a4290833a14bc9cfe01cd/FLAGcb935b6c5 [2025-03-17 13:37:30,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40efecc7f/34b2a6b8800a4290833a14bc9cfe01cd [2025-03-17 13:37:30,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:37:30,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:37:30,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:37:30,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:37:30,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:37:30,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:37:30" (1/1) ... [2025-03-17 13:37:30,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45811aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:30, skipping insertion in model container [2025-03-17 13:37:30,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:37:30" (1/1) ... [2025-03-17 13:37:30,261 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:37:30,492 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,521 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,528 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,530 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,534 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,555 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,555 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,557 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,557 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,561 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,562 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,563 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,563 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:30,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:37:30,584 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) [2025-03-17 13:37:30,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b4fe207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:30, skipping insertion in model container [2025-03-17 13:37:30,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:37:30,585 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-17 13:37:30,586 INFO L158 Benchmark]: Toolchain (without parser) took 369.52ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 84.3MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:37:30,587 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 13:37:30,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.19ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 84.3MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 13:37:30,588 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.19ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 84.3MB in the end (delta: 19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 778]: 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_BER_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:37:32,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:37:32,262 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 13:37:32,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:37:32,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:37:32,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:37:32,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:37:32,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:37:32,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:37:32,286 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:37:32,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:37:32,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:37:32,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:37:32,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:37:32,286 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:37:32,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:37:32,287 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:37:32,288 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:37:32,289 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:37:32,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 13:37:32,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:37:32,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:37:32,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:37:32,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:37:32,290 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 -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2025-03-17 13:37:32,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:37:32,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:37:32,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:37:32,505 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:37:32,505 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:37:32,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2025-03-17 13:37:33,715 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b85c9c53/cc26d1e473ce40cdb9a1a25c0d509ff9/FLAG219c6bd31 [2025-03-17 13:37:33,959 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:37:33,959 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2025-03-17 13:37:33,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b85c9c53/cc26d1e473ce40cdb9a1a25c0d509ff9/FLAG219c6bd31 [2025-03-17 13:37:34,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b85c9c53/cc26d1e473ce40cdb9a1a25c0d509ff9 [2025-03-17 13:37:34,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:37:34,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:37:34,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:37:34,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:37:34,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:37:34,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4bce34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34, skipping insertion in model container [2025-03-17 13:37:34,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:37:34,522 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,552 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,554 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,557 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,565 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,592 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,592 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,594 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,594 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,596 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,597 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,598 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:37:34,617 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-17 13:37:34,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:37:34,666 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,686 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,691 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,692 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,697 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,716 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,716 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,717 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,718 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,719 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,719 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,721 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,722 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-17 13:37:34,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:37:34,733 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:37:34,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:37:34,826 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:37:34,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34 WrapperNode [2025-03-17 13:37:34,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:37:34,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:37:34,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:37:34,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:37:34,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,892 INFO L138 Inliner]: procedures = 180, calls = 291, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 995 [2025-03-17 13:37:34,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:37:34,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:37:34,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:37:34,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:37:34,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,974 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-03-17 13:37:34,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:34,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:35,016 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:35,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:35,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:35,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:35,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:37:35,045 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:37:35,046 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:37:35,046 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:37:35,047 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (1/1) ... [2025-03-17 13:37:35,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:37:35,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:35,075 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) [2025-03-17 13:37:35,077 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 [2025-03-17 13:37:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-17 13:37:35,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-17 13:37:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-17 13:37:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 13:37:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 13:37:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 13:37:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 13:37:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2025-03-17 13:37:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-17 13:37:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:37:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:37:35,253 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:37:35,255 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:37:37,789 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-17 13:37:37,862 INFO L? ?]: Removed 1099 outVars from TransFormulas that were not future-live. [2025-03-17 13:37:37,862 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:37:37,889 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:37:37,893 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:37:37,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:37:37 BoogieIcfgContainer [2025-03-17 13:37:37,893 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:37:37,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:37:37,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:37:37,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:37:37,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:37:34" (1/3) ... [2025-03-17 13:37:37,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8de3ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:37:37, skipping insertion in model container [2025-03-17 13:37:37,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:37:34" (2/3) ... [2025-03-17 13:37:37,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8de3ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:37:37, skipping insertion in model container [2025-03-17 13:37:37,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:37:37" (3/3) ... [2025-03-17 13:37:37,899 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2025-03-17 13:37:37,909 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:37:37,911 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test8-1.i that has 7 procedures, 1103 locations, 1 initial locations, 35 loop locations, and 529 error locations. [2025-03-17 13:37:37,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:37:37,968 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;@7cda6567, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:37:37,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2025-03-17 13:37:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 1093 states, 540 states have (on average 2.2203703703703703) internal successors, (1199), 1083 states have internal predecessors, (1199), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:37:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:37:37,978 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:37,979 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:37:37,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 41631, now seen corresponding path program 1 times [2025-03-17 13:37:37,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:37,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124426830] [2025-03-17 13:37:37,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:37,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:37,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:37,994 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) [2025-03-17 13:37:37,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:37:38,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:37:38,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:37:38,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:38,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:38,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:37:38,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:38,151 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 [2025-03-17 13:37:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:38,173 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:38,174 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124426830] [2025-03-17 13:37:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124426830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:38,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:37:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475149574] [2025-03-17 13:37:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:38,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:37:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:38,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:37:38,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:38,193 INFO L87 Difference]: Start difference. First operand has 1093 states, 540 states have (on average 2.2203703703703703) internal successors, (1199), 1083 states have internal predecessors, (1199), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:39,267 INFO L93 Difference]: Finished difference Result 1096 states and 1183 transitions. [2025-03-17 13:37:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:37:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 13:37:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:39,287 INFO L225 Difference]: With dead ends: 1096 [2025-03-17 13:37:39,288 INFO L226 Difference]: Without dead ends: 1094 [2025-03-17 13:37:39,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:39,291 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 955 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:39,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 828 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 13:37:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2025-03-17 13:37:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1082. [2025-03-17 13:37:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 545 states have (on average 2.071559633027523) internal successors, (1129), 1071 states have internal predecessors, (1129), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-17 13:37:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1173 transitions. [2025-03-17 13:37:39,376 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1173 transitions. Word has length 2 [2025-03-17 13:37:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:39,376 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1173 transitions. [2025-03-17 13:37:39,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1173 transitions. [2025-03-17 13:37:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2025-03-17 13:37:39,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:39,377 INFO L218 NwaCegarLoop]: trace histogram [1, 1] [2025-03-17 13:37:39,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 13:37:39,577 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 [2025-03-17 13:37:39,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:39,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:39,578 INFO L85 PathProgramCache]: Analyzing trace with hash 41632, now seen corresponding path program 1 times [2025-03-17 13:37:39,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:39,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211468575] [2025-03-17 13:37:39,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:39,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:39,580 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) [2025-03-17 13:37:39,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 13:37:39,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 13:37:39,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 13:37:39,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:39,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:39,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:37:39,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:39,678 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 [2025-03-17 13:37:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:39,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:39,687 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:39,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211468575] [2025-03-17 13:37:39,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211468575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:39,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:39,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:37:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166537536] [2025-03-17 13:37:39,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:39,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:37:39,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:39,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:37:39,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:39,689 INFO L87 Difference]: Start difference. First operand 1082 states and 1173 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:41,260 INFO L93 Difference]: Finished difference Result 1481 states and 1604 transitions. [2025-03-17 13:37:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:37:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2025-03-17 13:37:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:41,265 INFO L225 Difference]: With dead ends: 1481 [2025-03-17 13:37:41,265 INFO L226 Difference]: Without dead ends: 1481 [2025-03-17 13:37:41,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:41,265 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 427 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:41,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1599 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 13:37:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-03-17 13:37:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1292. [2025-03-17 13:37:41,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 755 states have (on average 2.060927152317881) internal successors, (1556), 1280 states have internal predecessors, (1556), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:37:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1602 transitions. [2025-03-17 13:37:41,300 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1602 transitions. Word has length 2 [2025-03-17 13:37:41,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:41,300 INFO L471 AbstractCegarLoop]: Abstraction has 1292 states and 1602 transitions. [2025-03-17 13:37:41,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1602 transitions. [2025-03-17 13:37:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-17 13:37:41,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:41,300 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 13:37:41,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 13:37:41,500 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 [2025-03-17 13:37:41,501 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr523REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:41,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -169616581, now seen corresponding path program 1 times [2025-03-17 13:37:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383603397] [2025-03-17 13:37:41,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:41,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:41,505 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) [2025-03-17 13:37:41,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 13:37:41,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 13:37:41,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 13:37:41,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:41,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:41,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:37:41,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:41,616 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 [2025-03-17 13:37:41,657 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-03-17 13:37:41,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2025-03-17 13:37:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:41,712 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:41,712 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383603397] [2025-03-17 13:37:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383603397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:37:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349523080] [2025-03-17 13:37:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:41,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:37:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:41,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:37:41,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:37:41,713 INFO L87 Difference]: Start difference. First operand 1292 states and 1602 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-17 13:37:45,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:45,048 INFO L93 Difference]: Finished difference Result 2172 states and 2344 transitions. [2025-03-17 13:37:45,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:37:45,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-03-17 13:37:45,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:45,054 INFO L225 Difference]: With dead ends: 2172 [2025-03-17 13:37:45,054 INFO L226 Difference]: Without dead ends: 2172 [2025-03-17 13:37:45,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:37:45,056 INFO L435 NwaCegarLoop]: 1066 mSDtfsCounter, 1154 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:45,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 2331 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-17 13:37:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2025-03-17 13:37:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1442. [2025-03-17 13:37:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 904 states have (on average 2.043141592920354) internal successors, (1847), 1429 states have internal predecessors, (1847), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-17 13:37:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1895 transitions. [2025-03-17 13:37:45,086 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1895 transitions. Word has length 6 [2025-03-17 13:37:45,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:45,086 INFO L471 AbstractCegarLoop]: Abstraction has 1442 states and 1895 transitions. [2025-03-17 13:37:45,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-03-17 13:37:45,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1895 transitions. [2025-03-17 13:37:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:37:45,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:45,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:45,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 13:37:45,287 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 [2025-03-17 13:37:45,287 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr520REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:45,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:45,288 INFO L85 PathProgramCache]: Analyzing trace with hash -963145524, now seen corresponding path program 1 times [2025-03-17 13:37:45,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:45,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465694085] [2025-03-17 13:37:45,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:45,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:45,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:45,290 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) [2025-03-17 13:37:45,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 13:37:45,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:37:45,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:37:45,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:45,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:45,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:37:45,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:45,384 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 [2025-03-17 13:37:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:45,391 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:45,391 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:45,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465694085] [2025-03-17 13:37:45,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465694085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:45,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:45,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:37:45,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841113039] [2025-03-17 13:37:45,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:45,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:37:45,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:45,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:37:45,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:45,392 INFO L87 Difference]: Start difference. First operand 1442 states and 1895 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:46,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:46,478 INFO L93 Difference]: Finished difference Result 1779 states and 2252 transitions. [2025-03-17 13:37:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:37:46,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 13:37:46,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:46,483 INFO L225 Difference]: With dead ends: 1779 [2025-03-17 13:37:46,483 INFO L226 Difference]: Without dead ends: 1779 [2025-03-17 13:37:46,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:46,484 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 944 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:46,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1319 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 13:37:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2025-03-17 13:37:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1394. [2025-03-17 13:37:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 904 states have (on average 1.9756637168141593) internal successors, (1786), 1381 states have internal predecessors, (1786), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-17 13:37:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1834 transitions. [2025-03-17 13:37:46,507 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1834 transitions. Word has length 7 [2025-03-17 13:37:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:46,508 INFO L471 AbstractCegarLoop]: Abstraction has 1394 states and 1834 transitions. [2025-03-17 13:37:46,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1834 transitions. [2025-03-17 13:37:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 13:37:46,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:46,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:46,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 13:37:46,709 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 [2025-03-17 13:37:46,710 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr521REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:46,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash -963145523, now seen corresponding path program 1 times [2025-03-17 13:37:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:46,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525788162] [2025-03-17 13:37:46,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:46,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:46,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:46,712 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) [2025-03-17 13:37:46,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 13:37:46,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 13:37:46,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 13:37:46,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:46,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:46,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:37:46,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:46,809 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 [2025-03-17 13:37:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:46,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:46,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:46,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525788162] [2025-03-17 13:37:46,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525788162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:46,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:46,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:37:46,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552357349] [2025-03-17 13:37:46,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:46,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:37:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:46,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:37:46,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:46,826 INFO L87 Difference]: Start difference. First operand 1394 states and 1834 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:48,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:48,281 INFO L93 Difference]: Finished difference Result 2096 states and 2777 transitions. [2025-03-17 13:37:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:37:48,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-17 13:37:48,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:48,286 INFO L225 Difference]: With dead ends: 2096 [2025-03-17 13:37:48,286 INFO L226 Difference]: Without dead ends: 2096 [2025-03-17 13:37:48,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:48,287 INFO L435 NwaCegarLoop]: 1212 mSDtfsCounter, 710 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:48,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1700 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:37:48,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2025-03-17 13:37:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1858. [2025-03-17 13:37:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1375 states have (on average 1.9752727272727273) internal successors, (2716), 1842 states have internal predecessors, (2716), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-17 13:37:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2770 transitions. [2025-03-17 13:37:48,317 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2770 transitions. Word has length 7 [2025-03-17 13:37:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:48,317 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2770 transitions. [2025-03-17 13:37:48,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:37:48,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2770 transitions. [2025-03-17 13:37:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 13:37:48,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:48,318 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:48,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 13:37:48,518 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 [2025-03-17 13:37:48,519 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:48,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1452557219, now seen corresponding path program 1 times [2025-03-17 13:37:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:48,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601436556] [2025-03-17 13:37:48,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:48,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:48,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:48,522 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) [2025-03-17 13:37:48,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 13:37:48,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 13:37:48,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 13:37:48,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:48,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:48,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:37:48,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:48,623 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:37:48,624 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:37:48,624 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-17 13:37:48,629 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 30 treesize of output 39 [2025-03-17 13:37:48,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 13:37:48,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2025-03-17 13:37:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:48,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:48,703 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:48,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601436556] [2025-03-17 13:37:48,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601436556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:48,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:48,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:37:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234437822] [2025-03-17 13:37:48,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:48,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:37:48,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:48,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:37:48,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:37:48,704 INFO L87 Difference]: Start difference. First operand 1858 states and 2770 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-03-17 13:37:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:49,059 INFO L93 Difference]: Finished difference Result 3068 states and 4309 transitions. [2025-03-17 13:37:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:37:49,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-03-17 13:37:49,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:49,067 INFO L225 Difference]: With dead ends: 3068 [2025-03-17 13:37:49,067 INFO L226 Difference]: Without dead ends: 3068 [2025-03-17 13:37:49,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:37:49,068 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 987 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:49,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 3138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 13:37:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2025-03-17 13:37:49,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1649. [2025-03-17 13:37:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1167 states have (on average 1.9622964867180805) internal successors, (2290), 1634 states have internal predecessors, (2290), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:37:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2342 transitions. [2025-03-17 13:37:49,099 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2342 transitions. Word has length 9 [2025-03-17 13:37:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:49,100 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2342 transitions. [2025-03-17 13:37:49,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-03-17 13:37:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2342 transitions. [2025-03-17 13:37:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:37:49,100 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:49,100 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:49,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 13:37:49,304 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 [2025-03-17 13:37:49,304 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr512REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:49,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2129876335, now seen corresponding path program 1 times [2025-03-17 13:37:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104832165] [2025-03-17 13:37:49,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:49,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:49,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:49,307 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) [2025-03-17 13:37:49,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 13:37:49,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:37:49,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:37:49,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:49,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:49,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:37:49,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:49,420 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 [2025-03-17 13:37:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:49,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:49,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104832165] [2025-03-17 13:37:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104832165] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:49,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:37:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430323579] [2025-03-17 13:37:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:49,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:37:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:49,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:37:49,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:37:49,454 INFO L87 Difference]: Start difference. First operand 1649 states and 2342 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2025-03-17 13:37:50,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:50,789 INFO L93 Difference]: Finished difference Result 1652 states and 2328 transitions. [2025-03-17 13:37:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:37:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-03-17 13:37:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:50,793 INFO L225 Difference]: With dead ends: 1652 [2025-03-17 13:37:50,793 INFO L226 Difference]: Without dead ends: 1652 [2025-03-17 13:37:50,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:37:50,793 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 991 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:50,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1184 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 13:37:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2025-03-17 13:37:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1626. [2025-03-17 13:37:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1167 states have (on average 1.922879177377892) internal successors, (2244), 1611 states have internal predecessors, (2244), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:37:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2296 transitions. [2025-03-17 13:37:50,815 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2296 transitions. Word has length 16 [2025-03-17 13:37:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:50,815 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2296 transitions. [2025-03-17 13:37:50,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2025-03-17 13:37:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2296 transitions. [2025-03-17 13:37:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-17 13:37:50,816 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:50,816 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:50,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-17 13:37:51,016 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 [2025-03-17 13:37:51,016 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:51,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2129876336, now seen corresponding path program 1 times [2025-03-17 13:37:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665028314] [2025-03-17 13:37:51,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:51,019 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) [2025-03-17 13:37:51,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 13:37:51,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:37:51,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:37:51,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:51,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:51,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:37:51,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:51,155 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 [2025-03-17 13:37:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:51,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:51,225 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665028314] [2025-03-17 13:37:51,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665028314] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 13:37:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243636907] [2025-03-17 13:37:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:51,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:37:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:51,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:37:51,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:37:51,227 INFO L87 Difference]: Start difference. First operand 1626 states and 2296 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2025-03-17 13:37:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:53,090 INFO L93 Difference]: Finished difference Result 1994 states and 2457 transitions. [2025-03-17 13:37:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:37:53,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-03-17 13:37:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:53,094 INFO L225 Difference]: With dead ends: 1994 [2025-03-17 13:37:53,095 INFO L226 Difference]: Without dead ends: 1994 [2025-03-17 13:37:53,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:37:53,095 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 830 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:53,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1805 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-17 13:37:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2025-03-17 13:37:53,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1740. [2025-03-17 13:37:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1281 states have (on average 1.8594847775175645) internal successors, (2382), 1725 states have internal predecessors, (2382), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:37:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2434 transitions. [2025-03-17 13:37:53,115 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2434 transitions. Word has length 16 [2025-03-17 13:37:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:53,116 INFO L471 AbstractCegarLoop]: Abstraction has 1740 states and 2434 transitions. [2025-03-17 13:37:53,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2025-03-17 13:37:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2434 transitions. [2025-03-17 13:37:53,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-17 13:37:53,117 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:53,117 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, 1, 1, 1, 1, 1, 1] [2025-03-17 13:37:53,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 13:37:53,318 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 [2025-03-17 13:37:53,318 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr513REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:53,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash -678966774, now seen corresponding path program 1 times [2025-03-17 13:37:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641558879] [2025-03-17 13:37:53,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:53,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:53,321 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) [2025-03-17 13:37:53,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 13:37:53,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 13:37:53,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 13:37:53,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:53,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:53,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:37:53,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:53,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 13:37:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:53,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:37:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:53,950 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641558879] [2025-03-17 13:37:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641558879] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:37:53,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:37:53,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2025-03-17 13:37:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624539036] [2025-03-17 13:37:53,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:37:53,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:37:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:53,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:37:53,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:37:53,951 INFO L87 Difference]: Start difference. First operand 1740 states and 2434 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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) [2025-03-17 13:37:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:37:59,439 INFO L93 Difference]: Finished difference Result 2350 states and 2947 transitions. [2025-03-17 13:37:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:37:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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 35 [2025-03-17 13:37:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:37:59,445 INFO L225 Difference]: With dead ends: 2350 [2025-03-17 13:37:59,445 INFO L226 Difference]: Without dead ends: 2350 [2025-03-17 13:37:59,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-17 13:37:59,445 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 1350 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 3300 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3978 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-03-17 13:37:59,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 3978 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3300 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2025-03-17 13:37:59,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2025-03-17 13:37:59,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1904. [2025-03-17 13:37:59,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1445 states have (on average 1.8089965397923875) internal successors, (2614), 1889 states have internal predecessors, (2614), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:37:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2666 transitions. [2025-03-17 13:37:59,478 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2666 transitions. Word has length 35 [2025-03-17 13:37:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:37:59,478 INFO L471 AbstractCegarLoop]: Abstraction has 1904 states and 2666 transitions. [2025-03-17 13:37:59,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 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) [2025-03-17 13:37:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2666 transitions. [2025-03-17 13:37:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-17 13:37:59,481 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:37:59,482 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] [2025-03-17 13:37:59,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 13:37:59,682 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 [2025-03-17 13:37:59,682 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr460REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:37:59,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:37:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1828279590, now seen corresponding path program 1 times [2025-03-17 13:37:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:37:59,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779946272] [2025-03-17 13:37:59,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:37:59,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:37:59,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:37:59,688 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) [2025-03-17 13:37:59,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 13:37:59,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-17 13:37:59,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-17 13:37:59,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:37:59,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:37:59,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:37:59,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:37:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:37:59,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:37:59,966 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:37:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779946272] [2025-03-17 13:37:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779946272] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:37:59,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:37:59,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 13:37:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600729974] [2025-03-17 13:37:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:37:59,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:37:59,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:37:59,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:37:59,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:37:59,967 INFO L87 Difference]: Start difference. First operand 1904 states and 2666 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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) [2025-03-17 13:38:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:00,097 INFO L93 Difference]: Finished difference Result 2116 states and 2792 transitions. [2025-03-17 13:38:00,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:38:00,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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 47 [2025-03-17 13:38:00,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:00,101 INFO L225 Difference]: With dead ends: 2116 [2025-03-17 13:38:00,101 INFO L226 Difference]: Without dead ends: 2116 [2025-03-17 13:38:00,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:38:00,102 INFO L435 NwaCegarLoop]: 1279 mSDtfsCounter, 393 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:00,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2274 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:38:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2025-03-17 13:38:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1941. [2025-03-17 13:38:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1482 states have (on average 1.821187584345479) internal successors, (2699), 1926 states have internal predecessors, (2699), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:38:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2751 transitions. [2025-03-17 13:38:00,120 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2751 transitions. Word has length 47 [2025-03-17 13:38:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:00,120 INFO L471 AbstractCegarLoop]: Abstraction has 1941 states and 2751 transitions. [2025-03-17 13:38:00,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 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) [2025-03-17 13:38:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2751 transitions. [2025-03-17 13:38:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-17 13:38:00,122 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:00,122 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] [2025-03-17 13:38:00,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-17 13:38:00,323 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 [2025-03-17 13:38:00,323 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:00,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1795694071, now seen corresponding path program 1 times [2025-03-17 13:38:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:00,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316827278] [2025-03-17 13:38:00,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:00,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:00,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:00,327 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) [2025-03-17 13:38:00,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 13:38:00,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 13:38:00,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 13:38:00,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:00,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:00,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:38:00,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:00,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:38:00,516 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:00,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316827278] [2025-03-17 13:38:00,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316827278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:38:00,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:38:00,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:38:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320313609] [2025-03-17 13:38:00,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:38:00,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:38:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:00,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:38:00,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:38:00,516 INFO L87 Difference]: Start difference. First operand 1941 states and 2751 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-03-17 13:38:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:00,564 INFO L93 Difference]: Finished difference Result 1630 states and 2315 transitions. [2025-03-17 13:38:00,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:38:00,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2025-03-17 13:38:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:00,568 INFO L225 Difference]: With dead ends: 1630 [2025-03-17 13:38:00,568 INFO L226 Difference]: Without dead ends: 1630 [2025-03-17 13:38:00,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:38:00,569 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 56 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:00,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2963 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:38:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2025-03-17 13:38:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1628. [2025-03-17 13:38:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1192 states have (on average 1.8968120805369129) internal successors, (2261), 1613 states have internal predecessors, (2261), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-17 13:38:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2313 transitions. [2025-03-17 13:38:00,584 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2313 transitions. Word has length 50 [2025-03-17 13:38:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:00,585 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2313 transitions. [2025-03-17 13:38:00,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2025-03-17 13:38:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2313 transitions. [2025-03-17 13:38:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-17 13:38:00,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:00,586 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] [2025-03-17 13:38:00,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-17 13:38:00,786 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 [2025-03-17 13:38:00,786 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr431REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:00,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -353749457, now seen corresponding path program 1 times [2025-03-17 13:38:00,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:00,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986993350] [2025-03-17 13:38:00,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:00,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:00,789 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) [2025-03-17 13:38:00,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 13:38:00,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 13:38:00,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 13:38:00,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:00,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:00,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 13:38:00,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:00,982 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 [2025-03-17 13:38:01,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-17 13:38:01,329 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 [2025-03-17 13:38:01,347 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:38:01,347 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 [2025-03-17 13:38:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:01,355 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:38:01,356 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:01,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986993350] [2025-03-17 13:38:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986993350] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:38:01,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:38:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:38:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403676865] [2025-03-17 13:38:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:38:01,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:38:01,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:01,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:38:01,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:38:01,358 INFO L87 Difference]: Start difference. First operand 1628 states and 2313 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-17 13:38:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:02,829 INFO L93 Difference]: Finished difference Result 1601 states and 2287 transitions. [2025-03-17 13:38:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 13:38:02,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2025-03-17 13:38:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:02,833 INFO L225 Difference]: With dead ends: 1601 [2025-03-17 13:38:02,833 INFO L226 Difference]: Without dead ends: 1601 [2025-03-17 13:38:02,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:38:02,834 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 1704 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:02,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 804 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 13:38:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2025-03-17 13:38:02,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1167. [2025-03-17 13:38:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 774 states have (on average 1.776485788113695) internal successors, (1375), 1155 states have internal predecessors, (1375), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:38:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1421 transitions. [2025-03-17 13:38:02,845 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1421 transitions. Word has length 58 [2025-03-17 13:38:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:02,846 INFO L471 AbstractCegarLoop]: Abstraction has 1167 states and 1421 transitions. [2025-03-17 13:38:02,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-03-17 13:38:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1421 transitions. [2025-03-17 13:38:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:38:02,846 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:02,846 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] [2025-03-17 13:38:02,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 13:38:03,047 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 [2025-03-17 13:38:03,047 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr424REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:03,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 77648506, now seen corresponding path program 1 times [2025-03-17 13:38:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:03,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871148087] [2025-03-17 13:38:03,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:03,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:03,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:03,049 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) [2025-03-17 13:38:03,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 13:38:03,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:38:03,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:38:03,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:03,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:03,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 13:38:03,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:03,223 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 [2025-03-17 13:38:03,231 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 [2025-03-17 13:38:03,244 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 [2025-03-17 13:38:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:03,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:38:03,250 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871148087] [2025-03-17 13:38:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871148087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:38:03,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:38:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:38:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190967183] [2025-03-17 13:38:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:38:03,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:38:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:03,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:38:03,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:38:03,251 INFO L87 Difference]: Start difference. First operand 1167 states and 1421 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-03-17 13:38:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:04,493 INFO L93 Difference]: Finished difference Result 1166 states and 1420 transitions. [2025-03-17 13:38:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:38:04,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2025-03-17 13:38:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:04,496 INFO L225 Difference]: With dead ends: 1166 [2025-03-17 13:38:04,496 INFO L226 Difference]: Without dead ends: 1166 [2025-03-17 13:38:04,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:38:04,497 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 2 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:04,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2636 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 13:38:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2025-03-17 13:38:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2025-03-17 13:38:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 774 states have (on average 1.7751937984496124) internal successors, (1374), 1154 states have internal predecessors, (1374), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:38:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1420 transitions. [2025-03-17 13:38:04,505 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1420 transitions. Word has length 63 [2025-03-17 13:38:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:04,506 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1420 transitions. [2025-03-17 13:38:04,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-03-17 13:38:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1420 transitions. [2025-03-17 13:38:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 13:38:04,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:04,506 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] [2025-03-17 13:38:04,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 13:38:04,706 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 [2025-03-17 13:38:04,706 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:04,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:04,707 INFO L85 PathProgramCache]: Analyzing trace with hash 77648507, now seen corresponding path program 1 times [2025-03-17 13:38:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:04,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195418656] [2025-03-17 13:38:04,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:04,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:04,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:04,709 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) [2025-03-17 13:38:04,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 13:38:04,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 13:38:04,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 13:38:04,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:04,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:04,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 13:38:04,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:04,890 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 [2025-03-17 13:38:04,901 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 [2025-03-17 13:38:04,904 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 [2025-03-17 13:38:04,934 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 [2025-03-17 13:38:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:04,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:38:04,947 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195418656] [2025-03-17 13:38:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195418656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:38:04,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:38:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:38:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451421288] [2025-03-17 13:38:04,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:38:04,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:38:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:04,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:38:04,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:38:04,947 INFO L87 Difference]: Start difference. First operand 1166 states and 1420 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-03-17 13:38:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:06,580 INFO L93 Difference]: Finished difference Result 1165 states and 1419 transitions. [2025-03-17 13:38:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:38:06,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2025-03-17 13:38:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:06,583 INFO L225 Difference]: With dead ends: 1165 [2025-03-17 13:38:06,583 INFO L226 Difference]: Without dead ends: 1165 [2025-03-17 13:38:06,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:38:06,584 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 1 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:06,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2643 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 13:38:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2025-03-17 13:38:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2025-03-17 13:38:06,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 773 states have (on average 1.7761966364812418) internal successors, (1373), 1153 states have internal predecessors, (1373), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 13:38:06,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1419 transitions. [2025-03-17 13:38:06,594 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1419 transitions. Word has length 63 [2025-03-17 13:38:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:06,594 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1419 transitions. [2025-03-17 13:38:06,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2025-03-17 13:38:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1419 transitions. [2025-03-17 13:38:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:38:06,594 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:06,595 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, 1, 1, 1, 1, 1] [2025-03-17 13:38:06,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 13:38:06,795 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 [2025-03-17 13:38:06,795 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:06,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1592342825, now seen corresponding path program 1 times [2025-03-17 13:38:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:06,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498451615] [2025-03-17 13:38:06,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:06,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:06,798 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) [2025-03-17 13:38:06,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 13:38:06,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:38:06,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:38:06,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:06,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:06,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:38:06,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:06,981 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 [2025-03-17 13:38:07,024 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 [2025-03-17 13:38:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:07,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:38:07,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498451615] [2025-03-17 13:38:07,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498451615] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:38:07,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:38:07,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:38:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217054711] [2025-03-17 13:38:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:38:07,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:38:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:07,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:38:07,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:38:07,033 INFO L87 Difference]: Start difference. First operand 1165 states and 1419 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-17 13:38:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:09,063 INFO L93 Difference]: Finished difference Result 1177 states and 1434 transitions. [2025-03-17 13:38:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:38:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 71 [2025-03-17 13:38:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:09,066 INFO L225 Difference]: With dead ends: 1177 [2025-03-17 13:38:09,066 INFO L226 Difference]: Without dead ends: 1177 [2025-03-17 13:38:09,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-17 13:38:09,066 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 61 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3823 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:09,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 3823 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-17 13:38:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2025-03-17 13:38:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1171. [2025-03-17 13:38:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 778 states have (on average 1.7737789203084833) internal successors, (1380), 1158 states have internal predecessors, (1380), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (25), 9 states have call predecessors, (25), 22 states have call successors, (25) [2025-03-17 13:38:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1429 transitions. [2025-03-17 13:38:09,079 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1429 transitions. Word has length 71 [2025-03-17 13:38:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:09,079 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1429 transitions. [2025-03-17 13:38:09,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2025-03-17 13:38:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1429 transitions. [2025-03-17 13:38:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-17 13:38:09,079 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:09,079 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, 1, 1, 1, 1, 1] [2025-03-17 13:38:09,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 13:38:09,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:09,280 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:09,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1592342824, now seen corresponding path program 1 times [2025-03-17 13:38:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:09,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241950446] [2025-03-17 13:38:09,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:09,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:09,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:09,282 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:38:09,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 13:38:09,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-17 13:38:09,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-17 13:38:09,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:09,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:09,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 13:38:09,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:09,483 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:38:09,483 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241950446] [2025-03-17 13:38:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241950446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:38:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:38:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:38:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933399707] [2025-03-17 13:38:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:38:09,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 13:38:09,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:09,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 13:38:09,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:38:09,484 INFO L87 Difference]: Start difference. First operand 1171 states and 1429 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 13:38:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:09,515 INFO L93 Difference]: Finished difference Result 1168 states and 1423 transitions. [2025-03-17 13:38:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 13:38:09,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2025-03-17 13:38:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:09,518 INFO L225 Difference]: With dead ends: 1168 [2025-03-17 13:38:09,518 INFO L226 Difference]: Without dead ends: 1168 [2025-03-17 13:38:09,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 13:38:09,518 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 0 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2941 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 [2025-03-17 13:38:09,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2941 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 13:38:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2025-03-17 13:38:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1168. [2025-03-17 13:38:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 775 states have (on average 1.7754838709677419) internal successors, (1376), 1156 states have internal predecessors, (1376), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:38:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1423 transitions. [2025-03-17 13:38:09,533 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1423 transitions. Word has length 71 [2025-03-17 13:38:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:09,534 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1423 transitions. [2025-03-17 13:38:09,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-17 13:38:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1423 transitions. [2025-03-17 13:38:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-17 13:38:09,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:09,534 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, 1, 1, 1, 1, 1, 1] [2025-03-17 13:38:09,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 13:38:09,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:09,735 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:09,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:09,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2598432, now seen corresponding path program 1 times [2025-03-17 13:38:09,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:09,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487859809] [2025-03-17 13:38:09,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:09,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:09,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:09,738 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) [2025-03-17 13:38:09,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 13:38:09,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-17 13:38:09,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-17 13:38:09,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:09,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:09,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 13:38:09,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:09,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:38:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:09,982 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487859809] [2025-03-17 13:38:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487859809] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:38:09,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:38:09,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2025-03-17 13:38:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522610536] [2025-03-17 13:38:09,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:38:09,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:38:09,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:09,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:38:09,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:38:09,983 INFO L87 Difference]: Start difference. First operand 1168 states and 1423 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 13:38:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:10,095 INFO L93 Difference]: Finished difference Result 1180 states and 1440 transitions. [2025-03-17 13:38:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:38:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2025-03-17 13:38:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:10,101 INFO L225 Difference]: With dead ends: 1180 [2025-03-17 13:38:10,103 INFO L226 Difference]: Without dead ends: 1180 [2025-03-17 13:38:10,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 13:38:10,104 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 7 mSDsluCounter, 4891 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5873 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:10,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5873 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 13:38:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2025-03-17 13:38:10,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1178. [2025-03-17 13:38:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 784 states have (on average 1.774234693877551) internal successors, (1391), 1165 states have internal predecessors, (1391), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:38:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1438 transitions. [2025-03-17 13:38:10,116 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1438 transitions. Word has length 72 [2025-03-17 13:38:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:10,117 INFO L471 AbstractCegarLoop]: Abstraction has 1178 states and 1438 transitions. [2025-03-17 13:38:10,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2025-03-17 13:38:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1438 transitions. [2025-03-17 13:38:10,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-17 13:38:10,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:10,119 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, 1, 1, 1, 1, 1, 1] [2025-03-17 13:38:10,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-17 13:38:10,319 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 [2025-03-17 13:38:10,320 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr420REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:10,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1308152087, now seen corresponding path program 2 times [2025-03-17 13:38:10,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:10,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553137429] [2025-03-17 13:38:10,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:38:10,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:10,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:10,323 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) [2025-03-17 13:38:10,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 13:38:10,457 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-03-17 13:38:27,242 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:38:27,242 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:38:27,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:27,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 13:38:27,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:27,331 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:38:27,331 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 [2025-03-17 13:38:27,348 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 [2025-03-17 13:38:27,463 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:38:27,463 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 [2025-03-17 13:38:27,486 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 [2025-03-17 13:38:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 13:38:27,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:38:27,553 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2025-03-17 13:38:27,553 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 [2025-03-17 13:38:27,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:27,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553137429] [2025-03-17 13:38:27,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553137429] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:38:27,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638859623] [2025-03-17 13:38:27,587 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:38:27,587 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:38:27,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:38:27,607 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) [2025-03-17 13:38:27,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-03-17 13:38:27,802 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-03-17 13:38:28,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-17 13:38:28,516 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:38:28,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:28,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 13:38:28,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:28,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:38:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:28,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1638859623] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:38:28,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:38:28,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2025-03-17 13:38:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763962161] [2025-03-17 13:38:28,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:38:28,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 13:38:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:28,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 13:38:28,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2025-03-17 13:38:28,807 INFO L87 Difference]: Start difference. First operand 1178 states and 1438 transitions. Second operand has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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) [2025-03-17 13:38:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:34,827 INFO L93 Difference]: Finished difference Result 1202 states and 1469 transitions. [2025-03-17 13:38:34,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 13:38:34,827 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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 75 [2025-03-17 13:38:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:34,829 INFO L225 Difference]: With dead ends: 1202 [2025-03-17 13:38:34,829 INFO L226 Difference]: Without dead ends: 1198 [2025-03-17 13:38:34,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=2333, Unknown=7, NotChecked=0, Total=2756 [2025-03-17 13:38:34,830 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 953 mSDsluCounter, 5816 mSDsCounter, 0 mSdLazyCounter, 6935 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 6963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 6935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:34,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 6315 Invalid, 6963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 6935 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-03-17 13:38:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2025-03-17 13:38:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1186. [2025-03-17 13:38:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 793 states have (on average 1.7679697351828498) internal successors, (1402), 1173 states have internal predecessors, (1402), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:38:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1449 transitions. [2025-03-17 13:38:34,844 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1449 transitions. Word has length 75 [2025-03-17 13:38:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:34,844 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1449 transitions. [2025-03-17 13:38:34,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.0) internal successors, (138), 23 states have internal predecessors, (138), 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) [2025-03-17 13:38:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1449 transitions. [2025-03-17 13:38:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 13:38:34,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:34,845 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, 1, 1, 1, 1, 1, 1] [2025-03-17 13:38:34,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2025-03-17 13:38:35,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 13:38:35,245 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 [2025-03-17 13:38:35,246 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:35,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:35,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1292073864, now seen corresponding path program 1 times [2025-03-17 13:38:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470507929] [2025-03-17 13:38:35,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:38:35,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:35,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:35,249 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) [2025-03-17 13:38:35,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 13:38:35,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 13:38:35,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 13:38:35,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:38:35,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:35,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:38:35,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:35,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:38:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:35,982 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:35,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470507929] [2025-03-17 13:38:35,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470507929] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:38:35,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 13:38:35,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2025-03-17 13:38:35,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864902296] [2025-03-17 13:38:35,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 13:38:35,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 13:38:35,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:35,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 13:38:35,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2025-03-17 13:38:35,983 INFO L87 Difference]: Start difference. First operand 1186 states and 1449 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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) [2025-03-17 13:38:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 13:38:37,128 INFO L93 Difference]: Finished difference Result 1210 states and 1488 transitions. [2025-03-17 13:38:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 13:38:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 81 [2025-03-17 13:38:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 13:38:37,131 INFO L225 Difference]: With dead ends: 1210 [2025-03-17 13:38:37,131 INFO L226 Difference]: Without dead ends: 1204 [2025-03-17 13:38:37,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 13:38:37,132 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 25 mSDsluCounter, 16623 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17605 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 13:38:37,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17605 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 13:38:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2025-03-17 13:38:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1204. [2025-03-17 13:38:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 811 states have (on average 1.7570900123304563) internal successors, (1425), 1191 states have internal predecessors, (1425), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2025-03-17 13:38:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1472 transitions. [2025-03-17 13:38:37,146 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1472 transitions. Word has length 81 [2025-03-17 13:38:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 13:38:37,146 INFO L471 AbstractCegarLoop]: Abstraction has 1204 states and 1472 transitions. [2025-03-17 13:38:37,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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) [2025-03-17 13:38:37,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1472 transitions. [2025-03-17 13:38:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-17 13:38:37,147 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 13:38:37,147 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, 1, 1, 1, 1, 1, 1] [2025-03-17 13:38:37,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 13:38:37,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:37,347 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2025-03-17 13:38:37,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:38:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash -491400392, now seen corresponding path program 2 times [2025-03-17 13:38:37,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 13:38:37,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506130290] [2025-03-17 13:38:37,348 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:38:37,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:38:37,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:38:37,350 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:38:37,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 13:38:37,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-03-17 13:38:47,106 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-03-17 13:38:47,107 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:38:47,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:47,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-17 13:38:47,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:47,193 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 [2025-03-17 13:38:47,201 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-17 13:38:47,201 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 [2025-03-17 13:38:47,222 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 [2025-03-17 13:38:47,229 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 [2025-03-17 13:38:47,297 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 [2025-03-17 13:38:47,300 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 [2025-03-17 13:38:47,598 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-17 13:38:47,598 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 [2025-03-17 13:38:47,605 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 [2025-03-17 13:38:47,630 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 [2025-03-17 13:38:47,634 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 [2025-03-17 13:38:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-17 13:38:47,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:38:48,024 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 13:38:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506130290] [2025-03-17 13:38:48,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506130290] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:38:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [913761888] [2025-03-17 13:38:48,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:38:48,025 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-17 13:38:48,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-17 13:38:48,026 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-17 13:38:48,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2025-03-17 13:38:48,251 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-03-17 13:38:49,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-03-17 13:38:49,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:38:49,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:38:49,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 13:38:49,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:38:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:49,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:38:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:38:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [913761888] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:38:51,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:38:51,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2025-03-17 13:38:51,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986117753] [2025-03-17 13:38:51,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:38:51,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-17 13:38:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 13:38:51,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-17 13:38:51,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2953, Unknown=7, NotChecked=0, Total=3660 [2025-03-17 13:38:51,026 INFO L87 Difference]: Start difference. First operand 1204 states and 1472 transitions. Second operand has 58 states, 57 states have (on average 3.0526315789473686) internal successors, (174), 58 states have internal predecessors, (174), 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)