./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 07:42:57,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 07:42:57,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 07:42:57,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 07:42:57,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 07:42:57,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 07:42:57,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 07:42:57,280 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 07:42:57,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 07:42:57,281 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 07:42:57,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 07:42:57,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 07:42:57,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 07:42:57,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 07:42:57,282 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 07:42:57,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 07:42:57,283 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 07:42:57,284 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 07:42:57,284 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 07:42:57,284 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 07:42:57,284 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 07:42:57,284 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 07:42:57,284 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 07:42:57,284 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:42:57,285 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 07:42:57,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 07:42:57,285 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 -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2025-03-04 07:42:57,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 07:42:57,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 07:42:57,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 07:42:57,509 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 07:42:57,509 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 07:42:57,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2025-03-04 07:42:58,602 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3b71bf1/2809fa083ea74c5fa359f7957236efde/FLAGeb60b356f [2025-03-04 07:42:58,855 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 07:42:58,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2025-03-04 07:42:58,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3b71bf1/2809fa083ea74c5fa359f7957236efde/FLAGeb60b356f [2025-03-04 07:42:59,179 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3b71bf1/2809fa083ea74c5fa359f7957236efde [2025-03-04 07:42:59,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 07:42:59,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 07:42:59,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 07:42:59,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 07:42:59,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 07:42:59,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:42:59" (1/1) ... [2025-03-04 07:42:59,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a6a205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:42:59, skipping insertion in model container [2025-03-04 07:42:59,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:42:59" (1/1) ... [2025-03-04 07:42:59,214 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:42:59,457 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:42:59,522 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:42:59,532 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:42:59,533 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:42:59,534 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:42:59,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:42:59,550 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2025-03-04 07:42:59,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26b8f7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:42:59, skipping insertion in model container [2025-03-04 07:42:59,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 07:42:59,552 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2025-03-04 07:42:59,553 INFO L158 Benchmark]: Toolchain (without parser) took 370.27ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 96.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 07:42:59,554 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 07:42:59,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.63ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 96.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 07:42:59,555 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.63ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 96.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.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 e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 07:43:01,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 07:43:01,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 07:43:01,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 07:43:01,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 07:43:01,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 07:43:01,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 07:43:01,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 07:43:01,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 07:43:01,238 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 07:43:01,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 07:43:01,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 07:43:01,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 07:43:01,239 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 07:43:01,239 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 07:43:01,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 07:43:01,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 07:43:01,241 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 07:43:01,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:43:01,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 07:43:01,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 07:43:01,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 07:43:01,243 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 -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2025-03-04 07:43:01,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 07:43:01,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 07:43:01,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 07:43:01,485 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 07:43:01,485 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 07:43:01,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2025-03-04 07:43:02,647 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3389f24f9/d6ecd64984ad44ed9fb8a5f97c6bc980/FLAG5570d4df5 [2025-03-04 07:43:02,860 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 07:43:02,861 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2025-03-04 07:43:02,874 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3389f24f9/d6ecd64984ad44ed9fb8a5f97c6bc980/FLAG5570d4df5 [2025-03-04 07:43:03,221 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3389f24f9/d6ecd64984ad44ed9fb8a5f97c6bc980 [2025-03-04 07:43:03,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 07:43:03,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 07:43:03,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 07:43:03,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 07:43:03,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 07:43:03,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7737f103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03, skipping insertion in model container [2025-03-04 07:43:03,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:43:03,454 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,489 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,496 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,498 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,499 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:03,517 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2025-03-04 07:43:03,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 07:43:03,561 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,583 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,589 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,590 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,590 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 07:43:03,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:03,599 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 07:43:03,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 07:43:03,685 INFO L204 MainTranslator]: Completed translation [2025-03-04 07:43:03,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03 WrapperNode [2025-03-04 07:43:03,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 07:43:03,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 07:43:03,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 07:43:03,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 07:43:03,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,728 INFO L138 Inliner]: procedures = 176, calls = 103, calls flagged for inlining = 31, calls inlined = 14, statements flattened = 184 [2025-03-04 07:43:03,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 07:43:03,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 07:43:03,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 07:43:03,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 07:43:03,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,756 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [18, 2]. 90 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 8 writes are split as follows [8, 0]. [2025-03-04 07:43:03,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 07:43:03,770 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 07:43:03,770 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 07:43:03,771 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 07:43:03,771 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (1/1) ... [2025-03-04 07:43:03,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 07:43:03,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:03,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 07:43:03,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 07:43:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-03-04 07:43:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-03-04 07:43:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 07:43:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 07:43:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 07:43:03,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2025-03-04 07:43:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2025-03-04 07:43:03,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 07:43:03,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 07:43:03,929 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 07:43:03,931 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 07:43:03,954 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L533: havoc #t~malloc13#1.base, #t~malloc13#1.offset; [2025-03-04 07:43:04,304 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L762: havoc ldv_hid_get_drvdata_#t~ret42#1.base, ldv_hid_get_drvdata_#t~ret42#1.offset; [2025-03-04 07:43:04,304 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L775: havoc ldv_arvo_init_arvo_device_struct_#t~ret46#1; [2025-03-04 07:43:04,304 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L619: havoc ldv_dev_get_drvdata_#t~mem29#1.base, ldv_dev_get_drvdata_#t~mem29#1.offset; [2025-03-04 07:43:04,327 INFO L? ?]: Removed 164 outVars from TransFormulas that were not future-live. [2025-03-04 07:43:04,328 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 07:43:04,335 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 07:43:04,335 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 07:43:04,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:43:04 BoogieIcfgContainer [2025-03-04 07:43:04,336 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 07:43:04,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 07:43:04,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 07:43:04,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 07:43:04,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 07:43:03" (1/3) ... [2025-03-04 07:43:04,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d108d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 07:43:04, skipping insertion in model container [2025-03-04 07:43:04,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 07:43:03" (2/3) ... [2025-03-04 07:43:04,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d108d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 07:43:04, skipping insertion in model container [2025-03-04 07:43:04,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 07:43:04" (3/3) ... [2025-03-04 07:43:04,343 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test15-1.i [2025-03-04 07:43:04,353 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 07:43:04,354 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test15-1.i that has 2 procedures, 130 locations, 1 initial locations, 0 loop locations, and 50 error locations. [2025-03-04 07:43:04,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 07:43:04,385 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;@12f8d4a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 07:43:04,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2025-03-04 07:43:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 74 states have (on average 1.8108108108108107) internal successors, (134), 124 states have internal predecessors, (134), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 07:43:04,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:04,392 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:04,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:04,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash -510881834, now seen corresponding path program 1 times [2025-03-04 07:43:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605430470] [2025-03-04 07:43:04,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:04,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:04,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:04,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 07:43:04,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 07:43:04,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 07:43:04,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:04,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:04,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:43:04,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 07:43:04,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:04,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:04,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605430470] [2025-03-04 07:43:04,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605430470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:04,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:04,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 07:43:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221214263] [2025-03-04 07:43:04,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:04,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:43:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:04,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:43:04,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:04,571 INFO L87 Difference]: Start difference. First operand has 130 states, 74 states have (on average 1.8108108108108107) internal successors, (134), 124 states have internal predecessors, (134), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:04,652 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2025-03-04 07:43:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 07:43:04,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-03-04 07:43:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:04,658 INFO L225 Difference]: With dead ends: 130 [2025-03-04 07:43:04,658 INFO L226 Difference]: Without dead ends: 128 [2025-03-04 07:43:04,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:04,661 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 118 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:04,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 522 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-04 07:43:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2025-03-04 07:43:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 73 states have (on average 1.7945205479452055) internal successors, (131), 122 states have internal predecessors, (131), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2025-03-04 07:43:04,688 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 11 [2025-03-04 07:43:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:04,689 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2025-03-04 07:43:04,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 07:43:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2025-03-04 07:43:04,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 07:43:04,690 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:04,690 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:04,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 07:43:04,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:04,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:04,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:04,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1344285550, now seen corresponding path program 1 times [2025-03-04 07:43:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048168131] [2025-03-04 07:43:04,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:04,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:04,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:04,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 07:43:04,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 07:43:04,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 07:43:04,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:04,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:04,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:43:04,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:43:05,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:43:05,060 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048168131] [2025-03-04 07:43:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048168131] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:43:05,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:05,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2025-03-04 07:43:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284601254] [2025-03-04 07:43:05,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:05,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:43:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:05,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:43:05,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:05,061 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:05,105 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions. [2025-03-04 07:43:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 07:43:05,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-03-04 07:43:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:05,110 INFO L225 Difference]: With dead ends: 127 [2025-03-04 07:43:05,111 INFO L226 Difference]: Without dead ends: 127 [2025-03-04 07:43:05,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:05,111 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 113 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:05,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 528 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 07:43:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-03-04 07:43:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-03-04 07:43:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 73 states have (on average 1.7808219178082192) internal successors, (130), 121 states have internal predecessors, (130), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2025-03-04 07:43:05,119 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 17 [2025-03-04 07:43:05,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:05,120 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2025-03-04 07:43:05,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 07:43:05,120 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2025-03-04 07:43:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 07:43:05,120 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:05,120 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:05,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 07:43:05,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:05,325 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:05,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1276820890, now seen corresponding path program 1 times [2025-03-04 07:43:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98050242] [2025-03-04 07:43:05,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:05,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:05,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:05,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:05,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 07:43:05,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 07:43:05,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 07:43:05,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:05,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:05,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 07:43:05,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:43:05,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:05,426 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98050242] [2025-03-04 07:43:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98050242] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 07:43:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507119831] [2025-03-04 07:43:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:05,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 07:43:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:05,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 07:43:05,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:05,429 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:43:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:05,512 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2025-03-04 07:43:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 07:43:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-03-04 07:43:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:05,513 INFO L225 Difference]: With dead ends: 127 [2025-03-04 07:43:05,513 INFO L226 Difference]: Without dead ends: 127 [2025-03-04 07:43:05,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 07:43:05,513 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 103 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:05,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 480 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-03-04 07:43:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-03-04 07:43:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 73 states have (on average 1.7671232876712328) internal successors, (129), 121 states have internal predecessors, (129), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2025-03-04 07:43:05,522 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 18 [2025-03-04 07:43:05,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:05,522 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2025-03-04 07:43:05,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 07:43:05,522 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2025-03-04 07:43:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-04 07:43:05,522 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:05,522 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:05,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 07:43:05,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:05,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:05,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1626607459, now seen corresponding path program 1 times [2025-03-04 07:43:05,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:05,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931753694] [2025-03-04 07:43:05,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:05,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:05,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:05,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:05,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 07:43:05,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 07:43:05,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 07:43:05,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:05,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:05,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 07:43:05,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:05,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:05,945 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 07:43:05,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-04 07:43:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:43:05,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:43:14,555 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931753694] [2025-03-04 07:43:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931753694] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:43:14,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2025-03-04 07:43:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977430881] [2025-03-04 07:43:14,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:14,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 07:43:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:14,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 07:43:14,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=66, Unknown=2, NotChecked=0, Total=90 [2025-03-04 07:43:14,557 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:43:15,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:15,330 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2025-03-04 07:43:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:43:15,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 22 [2025-03-04 07:43:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:15,331 INFO L225 Difference]: With dead ends: 159 [2025-03-04 07:43:15,332 INFO L226 Difference]: Without dead ends: 159 [2025-03-04 07:43:15,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2025-03-04 07:43:15,333 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 99 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:15,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 623 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 07:43:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-03-04 07:43:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 140. [2025-03-04 07:43:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 134 states have internal predecessors, (154), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2025-03-04 07:43:15,343 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 22 [2025-03-04 07:43:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:15,343 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2025-03-04 07:43:15,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-04 07:43:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2025-03-04 07:43:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-04 07:43:15,343 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:15,344 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:15,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 07:43:15,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:15,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:15,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1626607460, now seen corresponding path program 1 times [2025-03-04 07:43:15,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636446990] [2025-03-04 07:43:15,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:15,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:15,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:15,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 07:43:15,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 07:43:15,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 07:43:15,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:15,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:15,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 07:43:15,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:15,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:15,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:15,751 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2025-03-04 07:43:15,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:43:15,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:43:15,794 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 07:43:15,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 07:43:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2025-03-04 07:43:15,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:15,969 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636446990] [2025-03-04 07:43:15,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636446990] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:43:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397375223] [2025-03-04 07:43:15,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:15,970 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 07:43:15,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 07:43:15,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 07:43:15,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2025-03-04 07:43:16,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 07:43:16,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 07:43:16,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:16,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:16,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-04 07:43:16,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:16,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:16,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:16,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:43:16,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:43:16,202 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 07:43:16,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 07:43:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2025-03-04 07:43:16,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:16,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [397375223] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:43:16,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:43:16,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2025-03-04 07:43:16,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657714544] [2025-03-04 07:43:16,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:43:16,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 07:43:16,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:16,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 07:43:16,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2025-03-04 07:43:16,305 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:16,827 INFO L93 Difference]: Finished difference Result 166 states and 189 transitions. [2025-03-04 07:43:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 07:43:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2025-03-04 07:43:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:16,829 INFO L225 Difference]: With dead ends: 166 [2025-03-04 07:43:16,829 INFO L226 Difference]: Without dead ends: 166 [2025-03-04 07:43:16,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2025-03-04 07:43:16,829 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 202 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:16,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 357 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 369 Invalid, 0 Unknown, 161 Unchecked, 0.4s Time] [2025-03-04 07:43:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-03-04 07:43:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 135. [2025-03-04 07:43:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.651685393258427) internal successors, (147), 129 states have internal predecessors, (147), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 155 transitions. [2025-03-04 07:43:16,838 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 155 transitions. Word has length 22 [2025-03-04 07:43:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:16,838 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 155 transitions. [2025-03-04 07:43:16,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-04 07:43:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 155 transitions. [2025-03-04 07:43:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-04 07:43:16,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:16,839 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:16,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 07:43:17,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2025-03-04 07:43:17,239 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,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-04 07:43:17,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:17,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1610545297, now seen corresponding path program 1 times [2025-03-04 07:43:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845568212] [2025-03-04 07:43:17,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:17,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:17,243 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:17,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 07:43:17,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-04 07:43:17,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 07:43:17,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:17,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:17,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 07:43:17,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:17,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 07:43:17,367 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 20 treesize of output 8 [2025-03-04 07:43:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:43:17,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:17,379 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845568212] [2025-03-04 07:43:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845568212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 07:43:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022953652] [2025-03-04 07:43:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:17,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 07:43:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:17,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 07:43:17,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 07:43:17,380 INFO L87 Difference]: Start difference. First operand 135 states and 155 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:43:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:17,485 INFO L93 Difference]: Finished difference Result 132 states and 150 transitions. [2025-03-04 07:43:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:43:17,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2025-03-04 07:43:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:17,487 INFO L225 Difference]: With dead ends: 132 [2025-03-04 07:43:17,487 INFO L226 Difference]: Without dead ends: 132 [2025-03-04 07:43:17,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 07:43:17,488 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 6 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:17,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 699 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:43:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-03-04 07:43:17,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-03-04 07:43:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 86 states have (on average 1.6511627906976745) internal successors, (142), 126 states have internal predecessors, (142), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2025-03-04 07:43:17,492 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 27 [2025-03-04 07:43:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:17,492 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2025-03-04 07:43:17,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:43:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2025-03-04 07:43:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-04 07:43:17,493 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:17,493 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:17,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 07:43:17,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:17,697 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:17,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1612551400, now seen corresponding path program 1 times [2025-03-04 07:43:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:17,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440889022] [2025-03-04 07:43:17,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:17,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:17,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:17,699 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:17,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 07:43:17,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 07:43:17,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 07:43:17,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:17,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:17,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 07:43:17,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:17,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:17,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 07:43:17,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-03-04 07:43:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:43:17,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:17,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440889022] [2025-03-04 07:43:17,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440889022] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:17,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:17,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 07:43:17,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443177533] [2025-03-04 07:43:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:17,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 07:43:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:17,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 07:43:17,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 07:43:17,835 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:43:18,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:18,127 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2025-03-04 07:43:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:43:18,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-03-04 07:43:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:18,128 INFO L225 Difference]: With dead ends: 131 [2025-03-04 07:43:18,128 INFO L226 Difference]: Without dead ends: 131 [2025-03-04 07:43:18,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 07:43:18,129 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 3 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:18,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 491 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 07:43:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-04 07:43:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2025-03-04 07:43:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 86 states have (on average 1.6395348837209303) internal successors, (141), 125 states have internal predecessors, (141), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2025-03-04 07:43:18,134 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 28 [2025-03-04 07:43:18,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:18,134 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2025-03-04 07:43:18,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:43:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2025-03-04 07:43:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-04 07:43:18,135 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:18,135 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:18,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 07:43:18,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:18,342 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:18,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1612551399, now seen corresponding path program 1 times [2025-03-04 07:43:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656192502] [2025-03-04 07:43:18,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:18,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:18,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:18,345 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:18,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 07:43:18,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-04 07:43:18,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 07:43:18,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:18,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:18,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 07:43:18,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:18,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:43:18,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 07:43:18,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-03-04 07:43:18,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2025-03-04 07:43:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:43:18,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:43:18,532 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656192502] [2025-03-04 07:43:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656192502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:43:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:43:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 07:43:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968495517] [2025-03-04 07:43:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:43:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 07:43:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:43:18,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 07:43:18,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 07:43:18,534 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:43:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:43:18,864 INFO L93 Difference]: Finished difference Result 130 states and 148 transitions. [2025-03-04 07:43:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:43:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-03-04 07:43:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:43:18,865 INFO L225 Difference]: With dead ends: 130 [2025-03-04 07:43:18,865 INFO L226 Difference]: Without dead ends: 130 [2025-03-04 07:43:18,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-04 07:43:18,866 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 2 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 07:43:18,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 538 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 07:43:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-04 07:43:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-03-04 07:43:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 86 states have (on average 1.627906976744186) internal successors, (140), 124 states have internal predecessors, (140), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:43:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2025-03-04 07:43:18,870 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 28 [2025-03-04 07:43:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:43:18,870 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2025-03-04 07:43:18,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:43:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2025-03-04 07:43:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-04 07:43:18,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:43:18,871 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:43:18,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 07:43:19,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:19,071 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:43:19,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:43:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash 821301845, now seen corresponding path program 1 times [2025-03-04 07:43:19,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:43:19,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646615184] [2025-03-04 07:43:19,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:19,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:43:19,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:43:19,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:43:19,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 07:43:19,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 07:43:19,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 07:43:19,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:19,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:19,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:43:19,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:19,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:19,237 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-04 07:43:19,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-04 07:43:19,372 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2025-03-04 07:43:19,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2025-03-04 07:43:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:43:19,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:43:42,073 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:43:42,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646615184] [2025-03-04 07:43:42,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646615184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:43:42,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [904083236] [2025-03-04 07:43:42,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:43:42,074 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 07:43:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 07:43:42,075 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 07:43:42,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2025-03-04 07:43:42,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 07:43:42,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 07:43:42,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:43:42,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:43:42,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-04 07:43:42,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:43:42,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:43:42,271 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2025-03-04 07:43:42,271 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 16 treesize of output 17 [2025-03-04 07:43:50,325 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2025-03-04 07:43:50,349 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2025-03-04 07:43:50,351 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 18 treesize of output 28 [2025-03-04 07:43:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2025-03-04 07:43:54,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:44:11,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [904083236] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:11,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 07:44:11,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 22 [2025-03-04 07:44:11,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764105658] [2025-03-04 07:44:11,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:11,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 07:44:11,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:11,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 07:44:11,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=405, Unknown=10, NotChecked=42, Total=552 [2025-03-04 07:44:11,133 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 18 states have internal predecessors, (52), 4 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-04 07:44:11,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:11,805 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2025-03-04 07:44:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 07:44:11,805 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 18 states have internal predecessors, (52), 4 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 30 [2025-03-04 07:44:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:11,806 INFO L225 Difference]: With dead ends: 153 [2025-03-04 07:44:11,806 INFO L226 Difference]: Without dead ends: 153 [2025-03-04 07:44:11,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=95, Invalid=405, Unknown=10, NotChecked=42, Total=552 [2025-03-04 07:44:11,807 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 166 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:11,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 662 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 554 Invalid, 0 Unknown, 162 Unchecked, 0.6s Time] [2025-03-04 07:44:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-04 07:44:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2025-03-04 07:44:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.6162790697674418) internal successors, (139), 123 states have internal predecessors, (139), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 147 transitions. [2025-03-04 07:44:11,810 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 147 transitions. Word has length 30 [2025-03-04 07:44:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:11,810 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 147 transitions. [2025-03-04 07:44:11,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 18 states have internal predecessors, (52), 4 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2025-03-04 07:44:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 147 transitions. [2025-03-04 07:44:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-04 07:44:11,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:11,811 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:11,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 07:44:12,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2025-03-04 07:44:12,211 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,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-04 07:44:12,211 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:44:12,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 821301846, now seen corresponding path program 1 times [2025-03-04 07:44:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:12,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903754269] [2025-03-04 07:44:12,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:12,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:12,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:12,215 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:12,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 07:44:12,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 07:44:12,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 07:44:12,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:12,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:12,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-04 07:44:12,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:12,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:12,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:12,500 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-04 07:44:12,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-04 07:44:12,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:44:12,613 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2025-03-04 07:44:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:44:12,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:44:12,660 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2025-03-04 07:44:12,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2025-03-04 07:44:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2025-03-04 07:44:12,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:16,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:16,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903754269] [2025-03-04 07:44:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903754269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36764691] [2025-03-04 07:44:16,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:16,964 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 07:44:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 07:44:16,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 07:44:16,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2025-03-04 07:44:17,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-04 07:44:17,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-04 07:44:17,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:17,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:17,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 07:44:17,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:17,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-04 07:44:17,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:17,167 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#valid| |ldv_zalloc_#t~malloc13#1.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2025-03-04 07:44:17,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:44:17,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:44:17,228 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-03-04 07:44:17,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-03-04 07:44:17,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 07:44:17,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 07:44:17,291 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-03-04 07:44:17,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-03-04 07:44:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 9 not checked. [2025-03-04 07:44:17,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36764691] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:25,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2025-03-04 07:44:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766874588] [2025-03-04 07:44:25,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:25,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 07:44:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:25,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 07:44:25,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=145, Unknown=3, NotChecked=50, Total=240 [2025-03-04 07:44:25,344 INFO L87 Difference]: Start difference. First operand 129 states and 147 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:44:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:26,210 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2025-03-04 07:44:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 07:44:26,210 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 30 [2025-03-04 07:44:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:26,211 INFO L225 Difference]: With dead ends: 152 [2025-03-04 07:44:26,211 INFO L226 Difference]: Without dead ends: 152 [2025-03-04 07:44:26,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=50, Invalid=195, Unknown=3, NotChecked=58, Total=306 [2025-03-04 07:44:26,212 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 231 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:26,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 478 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 585 Invalid, 0 Unknown, 322 Unchecked, 0.7s Time] [2025-03-04 07:44:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-03-04 07:44:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 128. [2025-03-04 07:44:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 122 states have internal predecessors, (138), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 146 transitions. [2025-03-04 07:44:26,215 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 146 transitions. Word has length 30 [2025-03-04 07:44:26,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:26,215 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 146 transitions. [2025-03-04 07:44:26,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-03-04 07:44:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 146 transitions. [2025-03-04 07:44:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-04 07:44:26,215 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:26,215 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:26,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2025-03-04 07:44:26,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-04 07:44:26,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:26,618 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:44:26,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1002906158, now seen corresponding path program 1 times [2025-03-04 07:44:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592576082] [2025-03-04 07:44:26,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:26,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:26,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 07:44:26,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 07:44:26,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 07:44:26,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:26,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:26,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 07:44:26,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 07:44:26,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 07:44:26,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:26,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592576082] [2025-03-04 07:44:26,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592576082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 07:44:26,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 07:44:26,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 07:44:26,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416858426] [2025-03-04 07:44:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:44:26,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 07:44:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:26,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 07:44:26,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 07:44:26,718 INFO L87 Difference]: Start difference. First operand 128 states and 146 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:44:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:26,868 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2025-03-04 07:44:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 07:44:26,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2025-03-04 07:44:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:26,869 INFO L225 Difference]: With dead ends: 164 [2025-03-04 07:44:26,869 INFO L226 Difference]: Without dead ends: 164 [2025-03-04 07:44:26,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 07:44:26,869 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 64 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:26,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 07:44:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-03-04 07:44:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 127. [2025-03-04 07:44:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 86 states have (on average 1.5930232558139534) internal successors, (137), 121 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:26,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2025-03-04 07:44:26,872 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 32 [2025-03-04 07:44:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:26,872 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2025-03-04 07:44:26,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:44:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2025-03-04 07:44:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-04 07:44:26,872 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:26,872 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:26,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 07:44:27,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:27,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:44:27,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1002906157, now seen corresponding path program 1 times [2025-03-04 07:44:27,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:27,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217005373] [2025-03-04 07:44:27,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:27,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:27,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:27,075 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:27,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 07:44:27,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-04 07:44:27,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-04 07:44:27,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:27,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:27,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 07:44:27,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:44:27,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:27,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2025-03-04 07:44:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:44:27,424 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:27,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217005373] [2025-03-04 07:44:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217005373] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:27,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:27,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2025-03-04 07:44:27,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608677468] [2025-03-04 07:44:27,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:27,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 07:44:27,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:27,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 07:44:27,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-03-04 07:44:27,425 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 07:44:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:27,830 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2025-03-04 07:44:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 07:44:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2025-03-04 07:44:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:27,831 INFO L225 Difference]: With dead ends: 173 [2025-03-04 07:44:27,831 INFO L226 Difference]: Without dead ends: 173 [2025-03-04 07:44:27,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2025-03-04 07:44:27,832 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 279 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:27,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 627 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 07:44:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-04 07:44:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 126. [2025-03-04 07:44:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 86 states have (on average 1.5813953488372092) internal successors, (136), 120 states have internal predecessors, (136), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2025-03-04 07:44:27,835 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 32 [2025-03-04 07:44:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:27,835 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2025-03-04 07:44:27,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 07:44:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2025-03-04 07:44:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-04 07:44:27,836 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:27,836 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:27,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 07:44:28,037 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 [2025-03-04 07:44:28,037 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:44:28,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:28,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1720140401, now seen corresponding path program 1 times [2025-03-04 07:44:28,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:28,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990542709] [2025-03-04 07:44:28,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:28,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:28,044 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) [2025-03-04 07:44:28,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 07:44:28,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 07:44:28,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 07:44:28,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:28,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:28,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-04 07:44:28,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:28,244 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 15 treesize of output 1 [2025-03-04 07:44:28,283 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 19 treesize of output 11 [2025-03-04 07:44:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:44:28,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 07:44:28,406 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:28,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990542709] [2025-03-04 07:44:28,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990542709] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:28,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 07:44:28,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2025-03-04 07:44:28,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028357308] [2025-03-04 07:44:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 07:44:28,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 07:44:28,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:28,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 07:44:28,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-03-04 07:44:28,407 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:44:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:28,741 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2025-03-04 07:44:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 07:44:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2025-03-04 07:44:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:28,742 INFO L225 Difference]: With dead ends: 156 [2025-03-04 07:44:28,742 INFO L226 Difference]: Without dead ends: 156 [2025-03-04 07:44:28,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2025-03-04 07:44:28,742 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 74 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:28,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 433 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 07:44:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-04 07:44:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 125. [2025-03-04 07:44:28,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.569767441860465) internal successors, (135), 119 states have internal predecessors, (135), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2025-03-04 07:44:28,746 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 34 [2025-03-04 07:44:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:28,746 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2025-03-04 07:44:28,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-04 07:44:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2025-03-04 07:44:28,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-04 07:44:28,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:28,746 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:28,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-04 07:44:28,946 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 [2025-03-04 07:44:28,947 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:44:28,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:28,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1720140400, now seen corresponding path program 1 times [2025-03-04 07:44:28,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:28,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098375282] [2025-03-04 07:44:28,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:28,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:28,964 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:28,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-04 07:44:29,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 07:44:29,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 07:44:29,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:29,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:29,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 07:44:29,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:29,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 07:44:29,180 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 15 treesize of output 1 [2025-03-04 07:44:29,223 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 17 treesize of output 9 [2025-03-04 07:44:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:44:29,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:29,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2025-03-04 07:44:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-04 07:44:29,724 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:29,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098375282] [2025-03-04 07:44:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098375282] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 07:44:29,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2025-03-04 07:44:29,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600854242] [2025-03-04 07:44:29,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:29,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 07:44:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:29,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 07:44:29,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2025-03-04 07:44:29,725 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 07:44:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 07:44:30,759 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2025-03-04 07:44:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 07:44:30,759 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2025-03-04 07:44:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 07:44:30,760 INFO L225 Difference]: With dead ends: 158 [2025-03-04 07:44:30,760 INFO L226 Difference]: Without dead ends: 158 [2025-03-04 07:44:30,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2025-03-04 07:44:30,761 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 438 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 07:44:30,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1312 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 07:44:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-04 07:44:30,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 124. [2025-03-04 07:44:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 86 states have (on average 1.558139534883721) internal successors, (134), 118 states have internal predecessors, (134), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-04 07:44:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 142 transitions. [2025-03-04 07:44:30,763 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 142 transitions. Word has length 34 [2025-03-04 07:44:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 07:44:30,763 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 142 transitions. [2025-03-04 07:44:30,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 19 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-03-04 07:44:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 142 transitions. [2025-03-04 07:44:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-04 07:44:30,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 07:44:30,764 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 07:44:30,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-04 07:44:30,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:30,964 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 47 more)] === [2025-03-04 07:44:30,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 07:44:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1784744787, now seen corresponding path program 1 times [2025-03-04 07:44:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 07:44:30,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813013922] [2025-03-04 07:44:30,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:30,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 07:44:30,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 07:44:30,967 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 07:44:30,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-04 07:44:31,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-04 07:44:31,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 07:44:31,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:31,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:31,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-03-04 07:44:31,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:31,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:31,193 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-04 07:44:31,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-04 07:44:31,345 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2025-03-04 07:44:31,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2025-03-04 07:44:31,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 07:44:31,645 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-04 07:44:31,645 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2025-03-04 07:44:31,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 07:44:31,702 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 59 treesize of output 31 [2025-03-04 07:44:31,834 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 7 treesize of output 3 [2025-03-04 07:44:31,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:31,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 33 [2025-03-04 07:44:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:44:32,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:32,401 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_373 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1) v_ArrVal_373))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd |c_ULTIMATE.start_entry_point_~hdev~0#1.offset| (_ bv8 32)) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse1)))))) is different from false [2025-03-04 07:44:32,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:32,427 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 40 [2025-03-04 07:44:32,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:32,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 196 treesize of output 194 [2025-03-04 07:44:32,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 194 [2025-03-04 07:44:32,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 122 [2025-03-04 07:44:33,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 07:44:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813013922] [2025-03-04 07:44:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813013922] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [707329187] [2025-03-04 07:44:33,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 07:44:33,057 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-04 07:44:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-04 07:44:33,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-04 07:44:33,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2025-03-04 07:44:33,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-04 07:44:33,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-04 07:44:33,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 07:44:33,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 07:44:33,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-04 07:44:33,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 07:44:33,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-03-04 07:44:33,337 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2025-03-04 07:44:33,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2025-03-04 07:44:33,415 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2025-03-04 07:44:33,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2025-03-04 07:44:33,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 07:44:33,624 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-04 07:44:33,625 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2025-03-04 07:44:33,680 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 59 treesize of output 31 [2025-03-04 07:44:33,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-04 07:44:33,730 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 7 treesize of output 3 [2025-03-04 07:44:33,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:33,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 33 [2025-03-04 07:44:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 07:44:33,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 07:44:34,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:34,586 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 40 [2025-03-04 07:44:34,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 07:44:34,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 392 treesize of output 382 [2025-03-04 07:44:34,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 194 [2025-03-04 07:44:34,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 135 [2025-03-04 07:44:43,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [707329187] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 07:44:43,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 07:44:43,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2025-03-04 07:44:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403068010] [2025-03-04 07:44:43,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 07:44:43,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 07:44:43,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 07:44:43,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 07:44:43,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1328, Unknown=32, NotChecked=74, Total=1560 [2025-03-04 07:44:43,454 INFO L87 Difference]: Start difference. First operand 124 states and 142 transitions. Second operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)